Discovery of a peculiar Cepheid-like star towards the northern edge of the Small Magellanic Cloud
Identifieur interne : 008D86 ( Main/Exploration ); précédent : 008D85; suivant : 008D87Discovery of a peculiar Cepheid-like star towards the northern edge of the Small Magellanic Cloud
Auteurs : J. B. Marquette [France] ; P. Tisserand [France, Australie] ; P. Francois [France] ; J. P. Beaulieu [France] ; V. Doublier [Chili] ; E. Lesquoy [France] ; A. Milsztajn [France] ; J. Pritchard [Chili] ; A. Schwarzenberg-Czemy [Pologne] ; C. Afonso [France] ; J. N. Albert [France] ; J. Andersen [Danemark] ; R. Ansari [France] ; E. Aubourg [France] ; P. Bareyre [France] ; X. Charlot [France] ; C. Coutures [France] ; R. Ferlet [France] ; P. Fouque [France] ; J. F. Glicenstein [France] ; B. Goldman [France] ; A. Gould [États-Unis] ; D. Graff [États-Unis] ; M. Gros [France] ; J. Haissinski [France] ; C. Hamadache [France] ; J. De Kat [France] ; L. Le Guillou [France] ; C. Loup [France] ; C. Magneville [France] ; E. Maurice [France] ; A. Maury [Chili] ; M. Moniez [France] ; N. Palanque-Delabrouille [France] ; O. Perdereau [France] ; Y. R. Rahal [France] ; J. Rich [France] ; M. Spiro [France] ; A. Vidal-Madjar [France] ; S. Zylberajch [France]Source :
- Astronomy and astrophysics : (Berlin. Print) [ 0004-6361 ] ; 2008.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Spectrométrie.
English descriptors
- KwdEn :
Abstract
Context. For seven years, the EROS-2 project obtained a mass of photometric data on variable stars. We present a peculiar Cepheid-like star, in the direction of the Small Magellanic Cloud, which demonstrates unusual photometric behaviour over a short time interval. Aims. We report on data of the photometry acquired by the MARLY telescope and spectroscopy from the EFOSC instrument for this star, called EROS2 J005135-714459(sm0060n13842), which resembles the unusual Cepheid HR 7308. Methods. The light curve of our target is analysed using the Analysis of Variance method to determine a pulsational period of 5.5675 days. A fit of time-dependent Fourier coefficients is performed and a search for proper motion is conducted. Results. The light curve exhibits a previously unobserved and spectacular change in both mean magnitude and amplitude, which has no clear theoretical explanation. Our analysis of the spectrum implies a radial velocity of 104 km s-1 and a metallicity of -0.4 ± 0.2 dex. In the direction of right ascension, we measure a proper motion of 17.4 ± 6.0 mas yr-1 using EROS astrometry, which is compatible with data from the NOMAD catalogue. Conclusions. The nature of EROS2 J005135-714459(sm0060n13842) remains unclear. For this star, we may have detected a non-zero proper motion, which would imply that it is a foreground object. Its radial velocity, pulsational characteristics, and photometric data, however, suggest that it is instead a Cepheid-like object located in the SMC. In such a case, it would present a challenge to conventional Cepheid models.
Affiliations:
- Australie, Chili, Danemark, France, Pologne, États-Unis
- Hovedstaden, Midi-Pyrénées, Occitanie (région administrative), Provence-Alpes-Côte d'Azur, Île-de-France
- Copenhague, Gif-sur-Yvette, Marseille, Orsay, Paris, Toulouse
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Albert</name><affiliation wicri:level="3"><inist:fA14 i1="08"><s1>Laboratoire de l'Accélérateur Linéaire, IN2P3 CNRS, Université de Paris-Sud</s1><s2>91405 Orsay</s2><s3>FRA</s3><sZ>11 aut.</sZ><sZ>13 aut.</sZ><sZ>25 aut.</sZ><sZ>33 aut.</sZ><sZ>35 aut.</sZ><sZ>36 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Orsay</settlement></placeName></affiliation></author><author><name sortKey="Andersen, J" sort="Andersen, J" uniqKey="Andersen J" first="J." last="Andersen">J. Andersen</name><affiliation wicri:level="1"><inist:fA14 i1="09"><s1>The Niels Bohr Institute, Copenhagen University, Juliane Maries Vej 30</s1><s2>2100 Copenhagen</s2><s3>DNK</s3><sZ>12 aut.</sZ></inist:fA14><country>Danemark</country><placeName><settlement type="city">Copenhague</settlement><region type="région" nuts="2">Hovedstaden</region></placeName></affiliation></author><author><name sortKey="Ansari, R" sort="Ansari, R" uniqKey="Ansari R" first="R." last="Ansari">R. Ansari</name><affiliation wicri:level="3"><inist:fA14 i1="08"><s1>Laboratoire de l'Accélérateur Linéaire, IN2P3 CNRS, Université de Paris-Sud</s1><s2>91405 Orsay</s2><s3>FRA</s3><sZ>11 aut.</sZ><sZ>13 aut.</sZ><sZ>25 aut.</sZ><sZ>33 aut.</sZ><sZ>35 aut.</sZ><sZ>36 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Orsay</settlement></placeName></affiliation></author><author><name sortKey="Aubourg, E" sort="Aubourg, E" uniqKey="Aubourg E" first="E." last="Aubourg">E. Aubourg</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>CEA, DSM, DAPNIA, Centre d'Études de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ><sZ>20 aut.</sZ><sZ>21 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ><sZ>27 aut.</sZ><sZ>28 aut.</sZ><sZ>30 aut.</sZ><sZ>34 aut.</sZ><sZ>37 aut.</sZ><sZ>38 aut.</sZ><sZ>40 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Gif-sur-Yvette</settlement></placeName></affiliation></author><author><name sortKey="Bareyre, P" sort="Bareyre, P" uniqKey="Bareyre P" first="P." last="Bareyre">P. Bareyre</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>CEA, DSM, DAPNIA, Centre d'Études de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ><sZ>20 aut.</sZ><sZ>21 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ><sZ>27 aut.</sZ><sZ>28 aut.</sZ><sZ>30 aut.</sZ><sZ>34 aut.</sZ><sZ>37 aut.</sZ><sZ>38 aut.</sZ><sZ>40 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Gif-sur-Yvette</settlement></placeName></affiliation></author><author><name sortKey="Charlot, X" sort="Charlot, X" uniqKey="Charlot X" first="X." last="Charlot">X. Charlot</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>CEA, DSM, DAPNIA, Centre d'Études de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ><sZ>20 aut.</sZ><sZ>21 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ><sZ>27 aut.</sZ><sZ>28 aut.</sZ><sZ>30 aut.</sZ><sZ>34 aut.</sZ><sZ>37 aut.</sZ><sZ>38 aut.</sZ><sZ>40 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Gif-sur-Yvette</settlement></placeName></affiliation></author><author><name sortKey="Coutures, C" sort="Coutures, C" uniqKey="Coutures C" first="C." last="Coutures">C. Coutures</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Institut d'Astrophysique de Paris, UMR 7095 CNRS, Université Pierre & Marie Curie, 98 bis Boulevard Arago</s1><s2>75014 Paris</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>4 aut.</sZ><sZ>6 aut.</sZ><sZ>17 aut.</sZ><sZ>18 aut.</sZ><sZ>29 aut.</sZ><sZ>39 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Paris</settlement></placeName></affiliation><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>CEA, DSM, DAPNIA, Centre d'Études de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ><sZ>20 aut.</sZ><sZ>21 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ><sZ>27 aut.</sZ><sZ>28 aut.</sZ><sZ>30 aut.</sZ><sZ>34 aut.</sZ><sZ>37 aut.</sZ><sZ>38 aut.</sZ><sZ>40 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Gif-sur-Yvette</settlement></placeName></affiliation></author><author><name sortKey="Ferlet, R" sort="Ferlet, R" uniqKey="Ferlet R" first="R." last="Ferlet">R. Ferlet</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Institut d'Astrophysique de Paris, UMR 7095 CNRS, Université Pierre & Marie Curie, 98 bis Boulevard Arago</s1><s2>75014 Paris</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>4 aut.</sZ><sZ>6 aut.</sZ><sZ>17 aut.</sZ><sZ>18 aut.</sZ><sZ>29 aut.</sZ><sZ>39 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Paris</settlement></placeName></affiliation></author><author><name sortKey="Fouque, P" sort="Fouque, P" uniqKey="Fouque P" first="P." last="Fouque">P. Fouque</name><affiliation wicri:level="3"><inist:fA14 i1="10"><s1>Observatoire Midi-Pyrénées, Laboratoire d'Astrophysique (UMR 5572), 14 av. E. Belin</s1><s2>31400 Toulouse</s2><s3>FRA</s3><sZ>19 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Midi-Pyrénées</region><settlement type="city">Toulouse</settlement></placeName></affiliation></author><author><name sortKey="Glicenstein, J F" sort="Glicenstein, J F" uniqKey="Glicenstein J" first="J. F." last="Glicenstein">J. F. Glicenstein</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>CEA, DSM, DAPNIA, Centre d'Études de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ><sZ>20 aut.</sZ><sZ>21 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ><sZ>27 aut.</sZ><sZ>28 aut.</sZ><sZ>30 aut.</sZ><sZ>34 aut.</sZ><sZ>37 aut.</sZ><sZ>38 aut.</sZ><sZ>40 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Gif-sur-Yvette</settlement></placeName></affiliation></author><author><name sortKey="Goldman, B" sort="Goldman, B" uniqKey="Goldman B" first="B." last="Goldman">B. Goldman</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>CEA, DSM, DAPNIA, Centre d'Études de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ><sZ>20 aut.</sZ><sZ>21 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ><sZ>27 aut.</sZ><sZ>28 aut.</sZ><sZ>30 aut.</sZ><sZ>34 aut.</sZ><sZ>37 aut.</sZ><sZ>38 aut.</sZ><sZ>40 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Gif-sur-Yvette</settlement></placeName></affiliation></author><author><name sortKey="Gould, A" sort="Gould, A" uniqKey="Gould A" first="A." last="Gould">A. Gould</name><affiliation wicri:level="1"><inist:fA14 i1="11"><s1>Department of Astronomy, Ohio State University</s1><s2>Columbus, OH 43210</s2><s3>USA</s3><sZ>22 aut.</sZ><sZ>23 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Columbus, OH 43210</wicri:noRegion></affiliation></author><author><name sortKey="Graff, D" sort="Graff, D" uniqKey="Graff D" first="D." last="Graff">D. Graff</name><affiliation wicri:level="1"><inist:fA14 i1="11"><s1>Department of Astronomy, Ohio State University</s1><s2>Columbus, OH 43210</s2><s3>USA</s3><sZ>22 aut.</sZ><sZ>23 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Columbus, OH 43210</wicri:noRegion></affiliation></author><author><name sortKey="Gros, M" sort="Gros, M" uniqKey="Gros M" first="M." last="Gros">M. Gros</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>CEA, DSM, DAPNIA, Centre d'Études de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ><sZ>20 aut.</sZ><sZ>21 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ><sZ>27 aut.</sZ><sZ>28 aut.</sZ><sZ>30 aut.</sZ><sZ>34 aut.</sZ><sZ>37 aut.</sZ><sZ>38 aut.</sZ><sZ>40 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Gif-sur-Yvette</settlement></placeName></affiliation></author><author><name sortKey="Haissinski, J" sort="Haissinski, J" uniqKey="Haissinski J" first="J." last="Haissinski">J. Haissinski</name><affiliation wicri:level="3"><inist:fA14 i1="08"><s1>Laboratoire de l'Accélérateur Linéaire, IN2P3 CNRS, Université de Paris-Sud</s1><s2>91405 Orsay</s2><s3>FRA</s3><sZ>11 aut.</sZ><sZ>13 aut.</sZ><sZ>25 aut.</sZ><sZ>33 aut.</sZ><sZ>35 aut.</sZ><sZ>36 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Orsay</settlement></placeName></affiliation></author><author><name sortKey="Hamadache, C" sort="Hamadache, C" uniqKey="Hamadache C" first="C." last="Hamadache">C. Hamadache</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>CEA, DSM, DAPNIA, Centre d'Études de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ><sZ>20 aut.</sZ><sZ>21 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ><sZ>27 aut.</sZ><sZ>28 aut.</sZ><sZ>30 aut.</sZ><sZ>34 aut.</sZ><sZ>37 aut.</sZ><sZ>38 aut.</sZ><sZ>40 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Gif-sur-Yvette</settlement></placeName></affiliation></author><author><name sortKey="De Kat, J" sort="De Kat, J" uniqKey="De Kat J" first="J." last="De Kat">J. De Kat</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>CEA, DSM, DAPNIA, Centre d'Études de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ><sZ>20 aut.</sZ><sZ>21 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ><sZ>27 aut.</sZ><sZ>28 aut.</sZ><sZ>30 aut.</sZ><sZ>34 aut.</sZ><sZ>37 aut.</sZ><sZ>38 aut.</sZ><sZ>40 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Gif-sur-Yvette</settlement></placeName></affiliation></author><author><name sortKey="Le Guillou, L" sort="Le Guillou, L" uniqKey="Le Guillou L" first="L." last="Le Guillou">L. Le Guillou</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>CEA, DSM, DAPNIA, Centre d'Études de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ><sZ>20 aut.</sZ><sZ>21 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ><sZ>27 aut.</sZ><sZ>28 aut.</sZ><sZ>30 aut.</sZ><sZ>34 aut.</sZ><sZ>37 aut.</sZ><sZ>38 aut.</sZ><sZ>40 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Gif-sur-Yvette</settlement></placeName></affiliation></author><author><name sortKey="Loup, C" sort="Loup, C" uniqKey="Loup C" first="C." last="Loup">C. Loup</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Institut d'Astrophysique de Paris, UMR 7095 CNRS, Université Pierre & Marie Curie, 98 bis Boulevard Arago</s1><s2>75014 Paris</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>4 aut.</sZ><sZ>6 aut.</sZ><sZ>17 aut.</sZ><sZ>18 aut.</sZ><sZ>29 aut.</sZ><sZ>39 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Paris</settlement></placeName></affiliation></author><author><name sortKey="Magneville, C" sort="Magneville, C" uniqKey="Magneville C" first="C." last="Magneville">C. Magneville</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>CEA, DSM, DAPNIA, Centre d'Études de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ><sZ>20 aut.</sZ><sZ>21 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ><sZ>27 aut.</sZ><sZ>28 aut.</sZ><sZ>30 aut.</sZ><sZ>34 aut.</sZ><sZ>37 aut.</sZ><sZ>38 aut.</sZ><sZ>40 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Gif-sur-Yvette</settlement></placeName></affiliation></author><author><name sortKey="Maurice, E" sort="Maurice, E" uniqKey="Maurice E" first="E." last="Maurice">E. Maurice</name><affiliation wicri:level="3"><inist:fA14 i1="12"><s1>Observatoire de Marseille, 2 place Le Verrier</s1><s2>13248 Marseille</s2><s3>FRA</s3><sZ>31 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Provence-Alpes-Côte d'Azur</region><settlement type="city">Marseille</settlement></placeName></affiliation></author><author><name sortKey="Maury, A" sort="Maury, A" uniqKey="Maury A" first="A." last="Maury">A. Maury</name><affiliation wicri:level="1"><inist:fA14 i1="05"><s1>European Southem Observatory (ESO), Casilla 19001</s1><s2>Santiago</s2><s3>CHL</s3><sZ>5 aut.</sZ><sZ>8 aut.</sZ><sZ>32 aut.</sZ></inist:fA14><country>Chili</country><wicri:noRegion>Santiago</wicri:noRegion></affiliation></author><author><name sortKey="Moniez, M" sort="Moniez, M" uniqKey="Moniez M" first="M." last="Moniez">M. Moniez</name><affiliation wicri:level="3"><inist:fA14 i1="08"><s1>Laboratoire de l'Accélérateur Linéaire, IN2P3 CNRS, Université de Paris-Sud</s1><s2>91405 Orsay</s2><s3>FRA</s3><sZ>11 aut.</sZ><sZ>13 aut.</sZ><sZ>25 aut.</sZ><sZ>33 aut.</sZ><sZ>35 aut.</sZ><sZ>36 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Orsay</settlement></placeName></affiliation></author><author><name sortKey="Palanque Delabrouille, N" sort="Palanque Delabrouille, N" uniqKey="Palanque Delabrouille N" first="N." last="Palanque-Delabrouille">N. Palanque-Delabrouille</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>CEA, DSM, DAPNIA, Centre d'Études de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ><sZ>20 aut.</sZ><sZ>21 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ><sZ>27 aut.</sZ><sZ>28 aut.</sZ><sZ>30 aut.</sZ><sZ>34 aut.</sZ><sZ>37 aut.</sZ><sZ>38 aut.</sZ><sZ>40 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Gif-sur-Yvette</settlement></placeName></affiliation></author><author><name sortKey="Perdereau, O" sort="Perdereau, O" uniqKey="Perdereau O" first="O." last="Perdereau">O. Perdereau</name><affiliation wicri:level="3"><inist:fA14 i1="08"><s1>Laboratoire de l'Accélérateur Linéaire, IN2P3 CNRS, Université de Paris-Sud</s1><s2>91405 Orsay</s2><s3>FRA</s3><sZ>11 aut.</sZ><sZ>13 aut.</sZ><sZ>25 aut.</sZ><sZ>33 aut.</sZ><sZ>35 aut.</sZ><sZ>36 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Orsay</settlement></placeName></affiliation></author><author><name sortKey="Rahal, Y R" sort="Rahal, Y R" uniqKey="Rahal Y" first="Y. R." last="Rahal">Y. R. Rahal</name><affiliation wicri:level="3"><inist:fA14 i1="08"><s1>Laboratoire de l'Accélérateur Linéaire, IN2P3 CNRS, Université de Paris-Sud</s1><s2>91405 Orsay</s2><s3>FRA</s3><sZ>11 aut.</sZ><sZ>13 aut.</sZ><sZ>25 aut.</sZ><sZ>33 aut.</sZ><sZ>35 aut.</sZ><sZ>36 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Orsay</settlement></placeName></affiliation></author><author><name sortKey="Rich, J" sort="Rich, J" uniqKey="Rich J" first="J." last="Rich">J. Rich</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>CEA, DSM, DAPNIA, Centre d'Études de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ><sZ>20 aut.</sZ><sZ>21 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ><sZ>27 aut.</sZ><sZ>28 aut.</sZ><sZ>30 aut.</sZ><sZ>34 aut.</sZ><sZ>37 aut.</sZ><sZ>38 aut.</sZ><sZ>40 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Gif-sur-Yvette</settlement></placeName></affiliation></author><author><name sortKey="Spiro, M" sort="Spiro, M" uniqKey="Spiro M" first="M." last="Spiro">M. Spiro</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>CEA, DSM, DAPNIA, Centre d'Études de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ><sZ>20 aut.</sZ><sZ>21 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ><sZ>27 aut.</sZ><sZ>28 aut.</sZ><sZ>30 aut.</sZ><sZ>34 aut.</sZ><sZ>37 aut.</sZ><sZ>38 aut.</sZ><sZ>40 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Gif-sur-Yvette</settlement></placeName></affiliation></author><author><name sortKey="Vidal Madjar, A" sort="Vidal Madjar, A" uniqKey="Vidal Madjar A" first="A." last="Vidal-Madjar">A. Vidal-Madjar</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Institut d'Astrophysique de Paris, UMR 7095 CNRS, Université Pierre & Marie Curie, 98 bis Boulevard Arago</s1><s2>75014 Paris</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>4 aut.</sZ><sZ>6 aut.</sZ><sZ>17 aut.</sZ><sZ>18 aut.</sZ><sZ>29 aut.</sZ><sZ>39 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Paris</settlement></placeName></affiliation></author><author><name sortKey="Zylberajch, S" sort="Zylberajch, S" uniqKey="Zylberajch S" first="S." last="Zylberajch">S. Zylberajch</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>CEA, DSM, DAPNIA, Centre d'Études de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ><sZ>20 aut.</sZ><sZ>21 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ><sZ>27 aut.</sZ><sZ>28 aut.</sZ><sZ>30 aut.</sZ><sZ>34 aut.</sZ><sZ>37 aut.</sZ><sZ>38 aut.</sZ><sZ>40 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Gif-sur-Yvette</settlement></placeName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">08-0367055</idno><date when="2008">2008</date><idno type="stanalyst">PASCAL 08-0367055 INIST</idno><idno type="RBID">Pascal:08-0367055</idno><idno type="wicri:Area/PascalFrancis/Corpus">003394</idno><idno type="wicri:Area/PascalFrancis/Curation">002C56</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">003301</idno><idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">003301</idno><idno type="wicri:doubleKey">0004-6361:2008:Marquette J:discovery:of:a</idno><idno type="wicri:Area/Main/Merge">009715</idno><idno type="wicri:Area/Main/Curation">008D86</idno><idno type="wicri:Area/Main/Exploration">008D86</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Discovery of a peculiar Cepheid-like star towards the northern edge of the Small Magellanic Cloud</title><author><name sortKey="Marquette, J B" sort="Marquette, J B" uniqKey="Marquette J" first="J. B." last="Marquette">J. B. Marquette</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Institut d'Astrophysique de Paris, UMR 7095 CNRS, Université Pierre & Marie Curie, 98 bis Boulevard Arago</s1><s2>75014 Paris</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>4 aut.</sZ><sZ>6 aut.</sZ><sZ>17 aut.</sZ><sZ>18 aut.</sZ><sZ>29 aut.</sZ><sZ>39 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Paris</settlement></placeName></affiliation></author><author><name sortKey="Tisserand, P" sort="Tisserand, P" uniqKey="Tisserand P" first="P." last="Tisserand">P. Tisserand</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>CEA, DSM, DAPNIA, Centre d'Études de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ><sZ>20 aut.</sZ><sZ>21 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ><sZ>27 aut.</sZ><sZ>28 aut.</sZ><sZ>30 aut.</sZ><sZ>34 aut.</sZ><sZ>37 aut.</sZ><sZ>38 aut.</sZ><sZ>40 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Gif-sur-Yvette</settlement></placeName></affiliation><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Research School of Astronomy & Astrophysics, Mount Stromlo Observatory, Cotter Road</s1><s2>Weston ACT 2611</s2><s3>AUS</s3><sZ>2 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Weston ACT 2611</wicri:noRegion></affiliation></author><author><name sortKey="Francois, P" sort="Francois, P" uniqKey="Francois P" first="P." last="Francois">P. Francois</name><affiliation wicri:level="1"><inist:fA14 i1="04"><s1>GEPI, Observatoire de Paris, 61 avenue de l'Observatoire</s1><s2>75014 Paris</s2><s3>FRA</s3><sZ>3 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>75014 Paris</wicri:noRegion><placeName><settlement type="city">Paris</settlement><region type="région" nuts="2">Île-de-France</region></placeName></affiliation></author><author><name sortKey="Beaulieu, J P" sort="Beaulieu, J P" uniqKey="Beaulieu J" first="J. P." last="Beaulieu">J. P. Beaulieu</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institut d'Astrophysique de Paris, UMR 7095 CNRS, Université Pierre & Marie Curie, 98 bis Boulevard Arago</s1><s2>75014 Paris</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>4 aut.</sZ><sZ>6 aut.</sZ><sZ>17 aut.</sZ><sZ>18 aut.</sZ><sZ>29 aut.</sZ><sZ>39 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>75014 Paris</wicri:noRegion><placeName><settlement type="city">Paris</settlement><region type="région" nuts="2">Île-de-France</region></placeName></affiliation></author><author><name sortKey="Doublier, V" sort="Doublier, V" uniqKey="Doublier V" first="V." last="Doublier">V. Doublier</name><affiliation wicri:level="1"><inist:fA14 i1="05"><s1>European Southem Observatory (ESO), Casilla 19001</s1><s2>Santiago</s2><s3>CHL</s3><sZ>5 aut.</sZ><sZ>8 aut.</sZ><sZ>32 aut.</sZ></inist:fA14><country>Chili</country><wicri:noRegion>Santiago</wicri:noRegion></affiliation></author><author><name sortKey="Lesquoy, E" sort="Lesquoy, E" uniqKey="Lesquoy E" first="E." last="Lesquoy">E. Lesquoy</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institut d'Astrophysique de Paris, UMR 7095 CNRS, Université Pierre & Marie Curie, 98 bis Boulevard Arago</s1><s2>75014 Paris</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>4 aut.</sZ><sZ>6 aut.</sZ><sZ>17 aut.</sZ><sZ>18 aut.</sZ><sZ>29 aut.</sZ><sZ>39 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>75014 Paris</wicri:noRegion><placeName><settlement type="city">Paris</settlement><region type="région" nuts="2">Île-de-France</region></placeName></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>CEA, DSM, DAPNIA, Centre d'Études de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ><sZ>20 aut.</sZ><sZ>21 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ><sZ>27 aut.</sZ><sZ>28 aut.</sZ><sZ>30 aut.</sZ><sZ>34 aut.</sZ><sZ>37 aut.</sZ><sZ>38 aut.</sZ><sZ>40 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>91191 Gif-sur-Yvette</wicri:noRegion><wicri:noRegion>Centre d'Études de Saclay</wicri:noRegion><wicri:noRegion>91191 Gif-sur-Yvette</wicri:noRegion></affiliation></author><author><name sortKey="Milsztajn, A" sort="Milsztajn, A" uniqKey="Milsztajn A" first="A." last="Milsztajn">A. Milsztajn</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>CEA, DSM, DAPNIA, Centre d'Études de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ><sZ>20 aut.</sZ><sZ>21 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ><sZ>27 aut.</sZ><sZ>28 aut.</sZ><sZ>30 aut.</sZ><sZ>34 aut.</sZ><sZ>37 aut.</sZ><sZ>38 aut.</sZ><sZ>40 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>91191 Gif-sur-Yvette</wicri:noRegion><wicri:noRegion>Centre d'Études de Saclay</wicri:noRegion><wicri:noRegion>91191 Gif-sur-Yvette</wicri:noRegion></affiliation></author><author><name sortKey="Pritchard, J" sort="Pritchard, J" uniqKey="Pritchard J" first="J." last="Pritchard">J. Pritchard</name><affiliation wicri:level="1"><inist:fA14 i1="05"><s1>European Southem Observatory (ESO), Casilla 19001</s1><s2>Santiago</s2><s3>CHL</s3><sZ>5 aut.</sZ><sZ>8 aut.</sZ><sZ>32 aut.</sZ></inist:fA14><country>Chili</country><wicri:noRegion>Santiago</wicri:noRegion></affiliation></author><author><name sortKey="Schwarzenberg Czemy, A" sort="Schwarzenberg Czemy, A" uniqKey="Schwarzenberg Czemy A" first="A." last="Schwarzenberg-Czemy">A. Schwarzenberg-Czemy</name><affiliation wicri:level="1"><inist:fA14 i1="06"><s1>Centrum Astronomiczne im. M. Kopernika, Bartycka 18</s1><s2>00-716 Warszawa</s2><s3>POL</s3><sZ>9 aut.</sZ></inist:fA14><country>Pologne</country><wicri:noRegion>00-716 Warszawa</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="07"><s1>Obserwatorium Astronomiczne, Uniwersytet A. Mickiewicza, Sloneczna 36</s1><s2>60-286 Poznan</s2><s3>POL</s3><sZ>9 aut.</sZ></inist:fA14><country>Pologne</country><wicri:noRegion>60-286 Poznan</wicri:noRegion></affiliation></author><author><name sortKey="Afonso, C" sort="Afonso, C" uniqKey="Afonso C" first="C." last="Afonso">C. Afonso</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>CEA, DSM, DAPNIA, Centre d'Études de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ><sZ>20 aut.</sZ><sZ>21 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ><sZ>27 aut.</sZ><sZ>28 aut.</sZ><sZ>30 aut.</sZ><sZ>34 aut.</sZ><sZ>37 aut.</sZ><sZ>38 aut.</sZ><sZ>40 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>91191 Gif-sur-Yvette</wicri:noRegion><wicri:noRegion>Centre d'Études de Saclay</wicri:noRegion><wicri:noRegion>91191 Gif-sur-Yvette</wicri:noRegion></affiliation></author><author><name sortKey="Albert, J N" sort="Albert, J N" uniqKey="Albert J" first="J. N." last="Albert">J. N. Albert</name><affiliation wicri:level="1"><inist:fA14 i1="08"><s1>Laboratoire de l'Accélérateur Linéaire, IN2P3 CNRS, Université de Paris-Sud</s1><s2>91405 Orsay</s2><s3>FRA</s3><sZ>11 aut.</sZ><sZ>13 aut.</sZ><sZ>25 aut.</sZ><sZ>33 aut.</sZ><sZ>35 aut.</sZ><sZ>36 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>91405 Orsay</wicri:noRegion><wicri:noRegion>Université de Paris-Sud</wicri:noRegion><wicri:noRegion>91405 Orsay</wicri:noRegion></affiliation></author><author><name sortKey="Andersen, J" sort="Andersen, J" uniqKey="Andersen J" first="J." last="Andersen">J. Andersen</name><affiliation wicri:level="1"><inist:fA14 i1="09"><s1>The Niels Bohr Institute, Copenhagen University, Juliane Maries Vej 30</s1><s2>2100 Copenhagen</s2><s3>DNK</s3><sZ>12 aut.</sZ></inist:fA14><country>Danemark</country><placeName><settlement type="city">Copenhague</settlement><region type="région" nuts="2">Hovedstaden</region></placeName></affiliation></author><author><name sortKey="Ansari, R" sort="Ansari, R" uniqKey="Ansari R" first="R." last="Ansari">R. Ansari</name><affiliation wicri:level="1"><inist:fA14 i1="08"><s1>Laboratoire de l'Accélérateur Linéaire, IN2P3 CNRS, Université de Paris-Sud</s1><s2>91405 Orsay</s2><s3>FRA</s3><sZ>11 aut.</sZ><sZ>13 aut.</sZ><sZ>25 aut.</sZ><sZ>33 aut.</sZ><sZ>35 aut.</sZ><sZ>36 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>91405 Orsay</wicri:noRegion><wicri:noRegion>Université de Paris-Sud</wicri:noRegion><wicri:noRegion>91405 Orsay</wicri:noRegion></affiliation></author><author><name sortKey="Aubourg, E" sort="Aubourg, E" uniqKey="Aubourg E" first="E." last="Aubourg">E. Aubourg</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>CEA, DSM, DAPNIA, Centre d'Études de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ><sZ>20 aut.</sZ><sZ>21 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ><sZ>27 aut.</sZ><sZ>28 aut.</sZ><sZ>30 aut.</sZ><sZ>34 aut.</sZ><sZ>37 aut.</sZ><sZ>38 aut.</sZ><sZ>40 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>91191 Gif-sur-Yvette</wicri:noRegion><wicri:noRegion>Centre d'Études de Saclay</wicri:noRegion><wicri:noRegion>91191 Gif-sur-Yvette</wicri:noRegion></affiliation></author><author><name sortKey="Bareyre, P" sort="Bareyre, P" uniqKey="Bareyre P" first="P." last="Bareyre">P. Bareyre</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>CEA, DSM, DAPNIA, Centre d'Études de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ><sZ>20 aut.</sZ><sZ>21 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ><sZ>27 aut.</sZ><sZ>28 aut.</sZ><sZ>30 aut.</sZ><sZ>34 aut.</sZ><sZ>37 aut.</sZ><sZ>38 aut.</sZ><sZ>40 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>91191 Gif-sur-Yvette</wicri:noRegion><wicri:noRegion>Centre d'Études de Saclay</wicri:noRegion><wicri:noRegion>91191 Gif-sur-Yvette</wicri:noRegion></affiliation></author><author><name sortKey="Charlot, X" sort="Charlot, X" uniqKey="Charlot X" first="X." last="Charlot">X. Charlot</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>CEA, DSM, DAPNIA, Centre d'Études de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ><sZ>20 aut.</sZ><sZ>21 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ><sZ>27 aut.</sZ><sZ>28 aut.</sZ><sZ>30 aut.</sZ><sZ>34 aut.</sZ><sZ>37 aut.</sZ><sZ>38 aut.</sZ><sZ>40 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>91191 Gif-sur-Yvette</wicri:noRegion><wicri:noRegion>Centre d'Études de Saclay</wicri:noRegion><wicri:noRegion>91191 Gif-sur-Yvette</wicri:noRegion></affiliation></author><author><name sortKey="Coutures, C" sort="Coutures, C" uniqKey="Coutures C" first="C." last="Coutures">C. Coutures</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institut d'Astrophysique de Paris, UMR 7095 CNRS, Université Pierre & Marie Curie, 98 bis Boulevard Arago</s1><s2>75014 Paris</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>4 aut.</sZ><sZ>6 aut.</sZ><sZ>17 aut.</sZ><sZ>18 aut.</sZ><sZ>29 aut.</sZ><sZ>39 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>75014 Paris</wicri:noRegion><placeName><settlement type="city">Paris</settlement><region type="région" nuts="2">Île-de-France</region></placeName></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>CEA, DSM, DAPNIA, Centre d'Études de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ><sZ>20 aut.</sZ><sZ>21 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ><sZ>27 aut.</sZ><sZ>28 aut.</sZ><sZ>30 aut.</sZ><sZ>34 aut.</sZ><sZ>37 aut.</sZ><sZ>38 aut.</sZ><sZ>40 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>91191 Gif-sur-Yvette</wicri:noRegion><wicri:noRegion>Centre d'Études de Saclay</wicri:noRegion><wicri:noRegion>91191 Gif-sur-Yvette</wicri:noRegion></affiliation></author><author><name sortKey="Ferlet, R" sort="Ferlet, R" uniqKey="Ferlet R" first="R." last="Ferlet">R. Ferlet</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institut d'Astrophysique de Paris, UMR 7095 CNRS, Université Pierre & Marie Curie, 98 bis Boulevard Arago</s1><s2>75014 Paris</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>4 aut.</sZ><sZ>6 aut.</sZ><sZ>17 aut.</sZ><sZ>18 aut.</sZ><sZ>29 aut.</sZ><sZ>39 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>75014 Paris</wicri:noRegion><placeName><settlement type="city">Paris</settlement><region type="région" nuts="2">Île-de-France</region></placeName></affiliation></author><author><name sortKey="Fouque, P" sort="Fouque, P" uniqKey="Fouque P" first="P." last="Fouque">P. Fouque</name><affiliation wicri:level="1"><inist:fA14 i1="10"><s1>Observatoire Midi-Pyrénées, Laboratoire d'Astrophysique (UMR 5572), 14 av. E. Belin</s1><s2>31400 Toulouse</s2><s3>FRA</s3><sZ>19 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>31400 Toulouse</wicri:noRegion><placeName><settlement type="city">Toulouse</settlement><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Midi-Pyrénées</region></placeName></affiliation></author><author><name sortKey="Glicenstein, J F" sort="Glicenstein, J F" uniqKey="Glicenstein J" first="J. F." last="Glicenstein">J. F. Glicenstein</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>CEA, DSM, DAPNIA, Centre d'Études de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ><sZ>20 aut.</sZ><sZ>21 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ><sZ>27 aut.</sZ><sZ>28 aut.</sZ><sZ>30 aut.</sZ><sZ>34 aut.</sZ><sZ>37 aut.</sZ><sZ>38 aut.</sZ><sZ>40 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>91191 Gif-sur-Yvette</wicri:noRegion><wicri:noRegion>Centre d'Études de Saclay</wicri:noRegion><wicri:noRegion>91191 Gif-sur-Yvette</wicri:noRegion></affiliation></author><author><name sortKey="Goldman, B" sort="Goldman, B" uniqKey="Goldman B" first="B." last="Goldman">B. Goldman</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>CEA, DSM, DAPNIA, Centre d'Études de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ><sZ>20 aut.</sZ><sZ>21 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ><sZ>27 aut.</sZ><sZ>28 aut.</sZ><sZ>30 aut.</sZ><sZ>34 aut.</sZ><sZ>37 aut.</sZ><sZ>38 aut.</sZ><sZ>40 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>91191 Gif-sur-Yvette</wicri:noRegion><wicri:noRegion>Centre d'Études de Saclay</wicri:noRegion><wicri:noRegion>91191 Gif-sur-Yvette</wicri:noRegion></affiliation></author><author><name sortKey="Gould, A" sort="Gould, A" uniqKey="Gould A" first="A." last="Gould">A. Gould</name><affiliation wicri:level="1"><inist:fA14 i1="11"><s1>Department of Astronomy, Ohio State University</s1><s2>Columbus, OH 43210</s2><s3>USA</s3><sZ>22 aut.</sZ><sZ>23 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Columbus, OH 43210</wicri:noRegion></affiliation></author><author><name sortKey="Graff, D" sort="Graff, D" uniqKey="Graff D" first="D." last="Graff">D. Graff</name><affiliation wicri:level="1"><inist:fA14 i1="11"><s1>Department of Astronomy, Ohio State University</s1><s2>Columbus, OH 43210</s2><s3>USA</s3><sZ>22 aut.</sZ><sZ>23 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Columbus, OH 43210</wicri:noRegion></affiliation></author><author><name sortKey="Gros, M" sort="Gros, M" uniqKey="Gros M" first="M." last="Gros">M. Gros</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>CEA, DSM, DAPNIA, Centre d'Études de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ><sZ>20 aut.</sZ><sZ>21 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ><sZ>27 aut.</sZ><sZ>28 aut.</sZ><sZ>30 aut.</sZ><sZ>34 aut.</sZ><sZ>37 aut.</sZ><sZ>38 aut.</sZ><sZ>40 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>91191 Gif-sur-Yvette</wicri:noRegion><wicri:noRegion>Centre d'Études de Saclay</wicri:noRegion><wicri:noRegion>91191 Gif-sur-Yvette</wicri:noRegion></affiliation></author><author><name sortKey="Haissinski, J" sort="Haissinski, J" uniqKey="Haissinski J" first="J." last="Haissinski">J. Haissinski</name><affiliation wicri:level="1"><inist:fA14 i1="08"><s1>Laboratoire de l'Accélérateur Linéaire, IN2P3 CNRS, Université de Paris-Sud</s1><s2>91405 Orsay</s2><s3>FRA</s3><sZ>11 aut.</sZ><sZ>13 aut.</sZ><sZ>25 aut.</sZ><sZ>33 aut.</sZ><sZ>35 aut.</sZ><sZ>36 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>91405 Orsay</wicri:noRegion><wicri:noRegion>Université de Paris-Sud</wicri:noRegion><wicri:noRegion>91405 Orsay</wicri:noRegion></affiliation></author><author><name sortKey="Hamadache, C" sort="Hamadache, C" uniqKey="Hamadache C" first="C." last="Hamadache">C. Hamadache</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>CEA, DSM, DAPNIA, Centre d'Études de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ><sZ>20 aut.</sZ><sZ>21 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ><sZ>27 aut.</sZ><sZ>28 aut.</sZ><sZ>30 aut.</sZ><sZ>34 aut.</sZ><sZ>37 aut.</sZ><sZ>38 aut.</sZ><sZ>40 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>91191 Gif-sur-Yvette</wicri:noRegion><wicri:noRegion>Centre d'Études de Saclay</wicri:noRegion><wicri:noRegion>91191 Gif-sur-Yvette</wicri:noRegion></affiliation></author><author><name sortKey="De Kat, J" sort="De Kat, J" uniqKey="De Kat J" first="J." last="De Kat">J. De Kat</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>CEA, DSM, DAPNIA, Centre d'Études de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ><sZ>20 aut.</sZ><sZ>21 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ><sZ>27 aut.</sZ><sZ>28 aut.</sZ><sZ>30 aut.</sZ><sZ>34 aut.</sZ><sZ>37 aut.</sZ><sZ>38 aut.</sZ><sZ>40 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>91191 Gif-sur-Yvette</wicri:noRegion><wicri:noRegion>Centre d'Études de Saclay</wicri:noRegion><wicri:noRegion>91191 Gif-sur-Yvette</wicri:noRegion></affiliation></author><author><name sortKey="Le Guillou, L" sort="Le Guillou, L" uniqKey="Le Guillou L" first="L." last="Le Guillou">L. Le Guillou</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>CEA, DSM, DAPNIA, Centre d'Études de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ><sZ>20 aut.</sZ><sZ>21 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ><sZ>27 aut.</sZ><sZ>28 aut.</sZ><sZ>30 aut.</sZ><sZ>34 aut.</sZ><sZ>37 aut.</sZ><sZ>38 aut.</sZ><sZ>40 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>91191 Gif-sur-Yvette</wicri:noRegion><wicri:noRegion>Centre d'Études de Saclay</wicri:noRegion><wicri:noRegion>91191 Gif-sur-Yvette</wicri:noRegion></affiliation></author><author><name sortKey="Loup, C" sort="Loup, C" uniqKey="Loup C" first="C." last="Loup">C. Loup</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institut d'Astrophysique de Paris, UMR 7095 CNRS, Université Pierre & Marie Curie, 98 bis Boulevard Arago</s1><s2>75014 Paris</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>4 aut.</sZ><sZ>6 aut.</sZ><sZ>17 aut.</sZ><sZ>18 aut.</sZ><sZ>29 aut.</sZ><sZ>39 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>75014 Paris</wicri:noRegion><placeName><settlement type="city">Paris</settlement><region type="région" nuts="2">Île-de-France</region></placeName></affiliation></author><author><name sortKey="Magneville, C" sort="Magneville, C" uniqKey="Magneville C" first="C." last="Magneville">C. Magneville</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>CEA, DSM, DAPNIA, Centre d'Études de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ><sZ>20 aut.</sZ><sZ>21 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ><sZ>27 aut.</sZ><sZ>28 aut.</sZ><sZ>30 aut.</sZ><sZ>34 aut.</sZ><sZ>37 aut.</sZ><sZ>38 aut.</sZ><sZ>40 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Gif-sur-Yvette</settlement></placeName></affiliation></author><author><name sortKey="Maurice, E" sort="Maurice, E" uniqKey="Maurice E" first="E." last="Maurice">E. Maurice</name><affiliation wicri:level="3"><inist:fA14 i1="12"><s1>Observatoire de Marseille, 2 place Le Verrier</s1><s2>13248 Marseille</s2><s3>FRA</s3><sZ>31 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Provence-Alpes-Côte d'Azur</region><settlement type="city">Marseille</settlement></placeName></affiliation></author><author><name sortKey="Maury, A" sort="Maury, A" uniqKey="Maury A" first="A." last="Maury">A. Maury</name><affiliation wicri:level="1"><inist:fA14 i1="05"><s1>European Southem Observatory (ESO), Casilla 19001</s1><s2>Santiago</s2><s3>CHL</s3><sZ>5 aut.</sZ><sZ>8 aut.</sZ><sZ>32 aut.</sZ></inist:fA14><country>Chili</country><wicri:noRegion>Santiago</wicri:noRegion></affiliation></author><author><name sortKey="Moniez, M" sort="Moniez, M" uniqKey="Moniez M" first="M." last="Moniez">M. Moniez</name><affiliation wicri:level="3"><inist:fA14 i1="08"><s1>Laboratoire de l'Accélérateur Linéaire, IN2P3 CNRS, Université de Paris-Sud</s1><s2>91405 Orsay</s2><s3>FRA</s3><sZ>11 aut.</sZ><sZ>13 aut.</sZ><sZ>25 aut.</sZ><sZ>33 aut.</sZ><sZ>35 aut.</sZ><sZ>36 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Orsay</settlement></placeName></affiliation></author><author><name sortKey="Palanque Delabrouille, N" sort="Palanque Delabrouille, N" uniqKey="Palanque Delabrouille N" first="N." last="Palanque-Delabrouille">N. Palanque-Delabrouille</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>CEA, DSM, DAPNIA, Centre d'Études de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ><sZ>20 aut.</sZ><sZ>21 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ><sZ>27 aut.</sZ><sZ>28 aut.</sZ><sZ>30 aut.</sZ><sZ>34 aut.</sZ><sZ>37 aut.</sZ><sZ>38 aut.</sZ><sZ>40 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Gif-sur-Yvette</settlement></placeName></affiliation></author><author><name sortKey="Perdereau, O" sort="Perdereau, O" uniqKey="Perdereau O" first="O." last="Perdereau">O. Perdereau</name><affiliation wicri:level="3"><inist:fA14 i1="08"><s1>Laboratoire de l'Accélérateur Linéaire, IN2P3 CNRS, Université de Paris-Sud</s1><s2>91405 Orsay</s2><s3>FRA</s3><sZ>11 aut.</sZ><sZ>13 aut.</sZ><sZ>25 aut.</sZ><sZ>33 aut.</sZ><sZ>35 aut.</sZ><sZ>36 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Orsay</settlement></placeName></affiliation></author><author><name sortKey="Rahal, Y R" sort="Rahal, Y R" uniqKey="Rahal Y" first="Y. R." last="Rahal">Y. R. Rahal</name><affiliation wicri:level="3"><inist:fA14 i1="08"><s1>Laboratoire de l'Accélérateur Linéaire, IN2P3 CNRS, Université de Paris-Sud</s1><s2>91405 Orsay</s2><s3>FRA</s3><sZ>11 aut.</sZ><sZ>13 aut.</sZ><sZ>25 aut.</sZ><sZ>33 aut.</sZ><sZ>35 aut.</sZ><sZ>36 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Orsay</settlement></placeName></affiliation></author><author><name sortKey="Rich, J" sort="Rich, J" uniqKey="Rich J" first="J." last="Rich">J. Rich</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>CEA, DSM, DAPNIA, Centre d'Études de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ><sZ>20 aut.</sZ><sZ>21 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ><sZ>27 aut.</sZ><sZ>28 aut.</sZ><sZ>30 aut.</sZ><sZ>34 aut.</sZ><sZ>37 aut.</sZ><sZ>38 aut.</sZ><sZ>40 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Gif-sur-Yvette</settlement></placeName></affiliation></author><author><name sortKey="Spiro, M" sort="Spiro, M" uniqKey="Spiro M" first="M." last="Spiro">M. Spiro</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>CEA, DSM, DAPNIA, Centre d'Études de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ><sZ>20 aut.</sZ><sZ>21 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ><sZ>27 aut.</sZ><sZ>28 aut.</sZ><sZ>30 aut.</sZ><sZ>34 aut.</sZ><sZ>37 aut.</sZ><sZ>38 aut.</sZ><sZ>40 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Gif-sur-Yvette</settlement></placeName></affiliation></author><author><name sortKey="Vidal Madjar, A" sort="Vidal Madjar, A" uniqKey="Vidal Madjar A" first="A." last="Vidal-Madjar">A. Vidal-Madjar</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Institut d'Astrophysique de Paris, UMR 7095 CNRS, Université Pierre & Marie Curie, 98 bis Boulevard Arago</s1><s2>75014 Paris</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>4 aut.</sZ><sZ>6 aut.</sZ><sZ>17 aut.</sZ><sZ>18 aut.</sZ><sZ>29 aut.</sZ><sZ>39 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Paris</settlement></placeName></affiliation></author><author><name sortKey="Zylberajch, S" sort="Zylberajch, S" uniqKey="Zylberajch S" first="S." last="Zylberajch">S. Zylberajch</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>CEA, DSM, DAPNIA, Centre d'Études de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ><sZ>20 aut.</sZ><sZ>21 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ><sZ>27 aut.</sZ><sZ>28 aut.</sZ><sZ>30 aut.</sZ><sZ>34 aut.</sZ><sZ>37 aut.</sZ><sZ>38 aut.</sZ><sZ>40 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Gif-sur-Yvette</settlement></placeName></affiliation></author></analytic><series><title level="j" type="main">Astronomy and astrophysics : (Berlin. Print)</title><title level="j" type="abbreviated">Astron. astrophys. : (Berl., Print)</title><idno type="ISSN">0004-6361</idno><imprint><date when="2008">2008</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Astronomy and astrophysics : (Berlin. Print)</title><title level="j" type="abbreviated">Astron. astrophys. : (Berl., Print)</title><idno type="ISSN">0004-6361</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Astrometry</term><term>Astronomical catalogues</term><term>Cepheids</term><term>Disk galaxies</term><term>Light curves</term><term>Magellanic Clouds</term><term>Metallicity</term><term>Models</term><term>Peculiar stars</term><term>Photometric characteristic</term><term>Photometry</term><term>Proper motion</term><term>Radial velocity</term><term>Right ascension</term><term>Small Magellanic Cloud</term><term>Spectroscopy</term><term>Variance analysis</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Etoile particulière</term><term>Céphéide</term><term>Petit Nuage Magellan</term><term>Photométrie</term><term>Spectrométrie</term><term>Courbe lumière</term><term>Analyse variance</term><term>Mouvement propre</term><term>Vitesse radiale</term><term>Métallicité</term><term>Ascension droite</term><term>Astrométrie</term><term>Catalogue astronomique</term><term>Caractéristique photométrique</term><term>Modèle</term><term>Galaxies disques</term><term>Nuages Magellan</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Spectrométrie</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Context. For seven years, the EROS-2 project obtained a mass of photometric data on variable stars. We present a peculiar Cepheid-like star, in the direction of the Small Magellanic Cloud, which demonstrates unusual photometric behaviour over a short time interval. Aims. We report on data of the photometry acquired by the MARLY telescope and spectroscopy from the EFOSC instrument for this star, called EROS2 J005135-714459(sm0060n13842), which resembles the unusual Cepheid HR 7308. Methods. The light curve of our target is analysed using the Analysis of Variance method to determine a pulsational period of 5.5675 days. A fit of time-dependent Fourier coefficients is performed and a search for proper motion is conducted. Results. The light curve exhibits a previously unobserved and spectacular change in both mean magnitude and amplitude, which has no clear theoretical explanation. Our analysis of the spectrum implies a radial velocity of 104 km s<sup>-1</sup> and a metallicity of -0.4 ± 0.2 dex. In the direction of right ascension, we measure a proper motion of 17.4 ± 6.0 mas yr<sup>-1</sup> using EROS astrometry, which is compatible with data from the NOMAD catalogue. Conclusions. The nature of EROS2 J005135-714459(sm0060n13842) remains unclear. For this star, we may have detected a non-zero proper motion, which would imply that it is a foreground object. Its radial velocity, pulsational characteristics, and photometric data, however, suggest that it is instead a Cepheid-like object located in the SMC. In such a case, it would present a challenge to conventional Cepheid models.</div></front></TEI><affiliations><list><country><li>Australie</li><li>Chili</li><li>Danemark</li><li>France</li><li>Pologne</li><li>États-Unis</li></country><region><li>Hovedstaden</li><li>Midi-Pyrénées</li><li>Occitanie (région administrative)</li><li>Provence-Alpes-Côte d'Azur</li><li>Île-de-France</li></region><settlement><li>Copenhague</li><li>Gif-sur-Yvette</li><li>Marseille</li><li>Orsay</li><li>Paris</li><li>Toulouse</li></settlement></list><tree><country name="France"><region name="Île-de-France"><name sortKey="Marquette, J B" sort="Marquette, J B" uniqKey="Marquette J" first="J. B." last="Marquette">J. B. Marquette</name></region><name sortKey="Afonso, C" sort="Afonso, C" uniqKey="Afonso C" first="C." last="Afonso">C. Afonso</name><name sortKey="Albert, J N" sort="Albert, J N" uniqKey="Albert J" first="J. N." last="Albert">J. N. Albert</name><name sortKey="Ansari, R" sort="Ansari, R" uniqKey="Ansari R" first="R." last="Ansari">R. Ansari</name><name sortKey="Aubourg, E" sort="Aubourg, E" uniqKey="Aubourg E" first="E." last="Aubourg">E. Aubourg</name><name sortKey="Bareyre, P" sort="Bareyre, P" uniqKey="Bareyre P" first="P." last="Bareyre">P. Bareyre</name><name sortKey="Beaulieu, J P" sort="Beaulieu, J P" uniqKey="Beaulieu J" first="J. P." last="Beaulieu">J. P. Beaulieu</name><name sortKey="Charlot, X" sort="Charlot, X" uniqKey="Charlot X" first="X." last="Charlot">X. Charlot</name><name sortKey="Coutures, C" sort="Coutures, C" uniqKey="Coutures C" first="C." last="Coutures">C. Coutures</name><name sortKey="Coutures, C" sort="Coutures, C" uniqKey="Coutures C" first="C." last="Coutures">C. Coutures</name><name sortKey="De Kat, J" sort="De Kat, J" uniqKey="De Kat J" first="J." last="De Kat">J. De Kat</name><name sortKey="Ferlet, R" sort="Ferlet, R" uniqKey="Ferlet R" first="R." last="Ferlet">R. Ferlet</name><name sortKey="Fouque, P" sort="Fouque, P" uniqKey="Fouque P" first="P." last="Fouque">P. Fouque</name><name sortKey="Francois, P" sort="Francois, P" uniqKey="Francois P" first="P." last="Francois">P. Francois</name><name sortKey="Glicenstein, J F" sort="Glicenstein, J F" uniqKey="Glicenstein J" first="J. F." last="Glicenstein">J. F. Glicenstein</name><name sortKey="Goldman, B" sort="Goldman, B" uniqKey="Goldman B" first="B." last="Goldman">B. Goldman</name><name sortKey="Gros, M" sort="Gros, M" uniqKey="Gros M" first="M." last="Gros">M. Gros</name><name sortKey="Haissinski, J" sort="Haissinski, J" uniqKey="Haissinski J" first="J." last="Haissinski">J. Haissinski</name><name sortKey="Hamadache, C" sort="Hamadache, C" uniqKey="Hamadache C" first="C." last="Hamadache">C. Hamadache</name><name sortKey="Le Guillou, L" sort="Le Guillou, L" uniqKey="Le Guillou L" first="L." last="Le Guillou">L. Le Guillou</name><name sortKey="Lesquoy, E" sort="Lesquoy, E" uniqKey="Lesquoy E" first="E." last="Lesquoy">E. Lesquoy</name><name sortKey="Lesquoy, E" sort="Lesquoy, E" uniqKey="Lesquoy E" first="E." last="Lesquoy">E. Lesquoy</name><name sortKey="Loup, C" sort="Loup, C" uniqKey="Loup C" first="C." last="Loup">C. Loup</name><name sortKey="Magneville, C" sort="Magneville, C" uniqKey="Magneville C" first="C." last="Magneville">C. Magneville</name><name sortKey="Maurice, E" sort="Maurice, E" uniqKey="Maurice E" first="E." last="Maurice">E. Maurice</name><name sortKey="Milsztajn, A" sort="Milsztajn, A" uniqKey="Milsztajn A" first="A." last="Milsztajn">A. Milsztajn</name><name sortKey="Moniez, M" sort="Moniez, M" uniqKey="Moniez M" first="M." last="Moniez">M. Moniez</name><name sortKey="Palanque Delabrouille, N" sort="Palanque Delabrouille, N" uniqKey="Palanque Delabrouille N" first="N." last="Palanque-Delabrouille">N. Palanque-Delabrouille</name><name sortKey="Perdereau, O" sort="Perdereau, O" uniqKey="Perdereau O" first="O." last="Perdereau">O. Perdereau</name><name sortKey="Rahal, Y R" sort="Rahal, Y R" uniqKey="Rahal Y" first="Y. R." last="Rahal">Y. R. Rahal</name><name sortKey="Rich, J" sort="Rich, J" uniqKey="Rich J" first="J." last="Rich">J. Rich</name><name sortKey="Spiro, M" sort="Spiro, M" uniqKey="Spiro M" first="M." last="Spiro">M. Spiro</name><name sortKey="Tisserand, P" sort="Tisserand, P" uniqKey="Tisserand P" first="P." last="Tisserand">P. Tisserand</name><name sortKey="Vidal Madjar, A" sort="Vidal Madjar, A" uniqKey="Vidal Madjar A" first="A." last="Vidal-Madjar">A. Vidal-Madjar</name><name sortKey="Zylberajch, S" sort="Zylberajch, S" uniqKey="Zylberajch S" first="S." last="Zylberajch">S. Zylberajch</name></country><country name="Australie"><noRegion><name sortKey="Tisserand, P" sort="Tisserand, P" uniqKey="Tisserand P" first="P." last="Tisserand">P. Tisserand</name></noRegion></country><country name="Chili"><noRegion><name sortKey="Doublier, V" sort="Doublier, V" uniqKey="Doublier V" first="V." last="Doublier">V. Doublier</name></noRegion><name sortKey="Maury, A" sort="Maury, A" uniqKey="Maury A" first="A." last="Maury">A. Maury</name><name sortKey="Pritchard, J" sort="Pritchard, J" uniqKey="Pritchard J" first="J." last="Pritchard">J. Pritchard</name></country><country name="Pologne"><noRegion><name sortKey="Schwarzenberg Czemy, A" sort="Schwarzenberg Czemy, A" uniqKey="Schwarzenberg Czemy A" first="A." last="Schwarzenberg-Czemy">A. Schwarzenberg-Czemy</name></noRegion><name sortKey="Schwarzenberg Czemy, A" sort="Schwarzenberg Czemy, A" uniqKey="Schwarzenberg Czemy A" first="A." last="Schwarzenberg-Czemy">A. Schwarzenberg-Czemy</name></country><country name="Danemark"><region name="Hovedstaden"><name sortKey="Andersen, J" sort="Andersen, J" uniqKey="Andersen J" first="J." last="Andersen">J. Andersen</name></region></country><country name="États-Unis"><noRegion><name sortKey="Gould, A" sort="Gould, A" uniqKey="Gould A" first="A." last="Gould">A. Gould</name></noRegion><name sortKey="Graff, D" sort="Graff, D" uniqKey="Graff D" first="D." last="Graff">D. Graff</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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