Multisite campaign on the open cluster M67-III. δ Scuti pulsations in the blue stragglers
Identifieur interne : 003B36 ( PascalFrancis/Corpus ); précédent : 003B35; suivant : 003B37Multisite campaign on the open cluster M67-III. δ Scuti pulsations in the blue stragglers
Auteurs : H. Bruntt ; D. Stello ; J. C. Suarez ; T. Arentoft ; T. R. Bedding ; M. Y. Bouzid ; Z. Csubry ; T. H. Dall ; Z. E. Dind ; S. Frandsen ; R. L. Gilliland ; A. P. Jacob ; H. R. Jensen ; Y. B. Kang ; S.-L. Kim ; L. L. Kiss ; H. Kjeldsen ; J.-R. Koo ; J.-A. Lee ; C.-U. Lee ; J. Nuspl ; C. Sterken ; R. SzaboSource :
- Monthly Notices of the Royal Astronomical Society [ 0035-8711 ] ; 2007.
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Abstract
We have made an asteroseismic analysis of the variable blue stragglers in the open cluster M67. The data set consists of photometric time-series from eight sites using nine 0.6-2.1 m telescopes with a time-baseline of 43 d. In two stars, EW Cnc and EX Cnc, we detect the highest number of frequencies (41 and 26) detected in δ Scuti stars belonging to a stellar cluster, and EW Cnc has the second highest number of frequencies detected in any δ Scuti star. We have computed a grid of pulsation models that take the effects of rotation into account. The distribution of observed and theoretical frequencies shows that in a wide frequency range a significant fraction of the radial and non-radial low-degree modes are excited to detectable amplitudes. Despite the large number of observed frequencies we cannot constrain the fundamental parameters of the stars. To make progress we need to identify the degrees of some of the modes from either multicolour photometry or spectroscopy.
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Format Inist (serveur)
| NO : | PASCAL 07-0329365 INIST |
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| ET : | Multisite campaign on the open cluster M67-III. δ Scuti pulsations in the blue stragglers |
| AU : | BRUNTT (H.); STELLO (D.); SUAREZ (J. C.); ARENTOFT (T.); BEDDING (T. R.); BOUZID (M. Y.); CSUBRY (Z.); DALL (T. H.); DIND (Z. E.); FRANDSEN (S.); GILLILAND (R. L.); JACOB (A. P.); JENSEN (H. R.); KANG (Y. B.); KIM (S.-L.); KISS (L. L.); KJELDSEN (H.); KOO (J.-R.); LEE (J.-A.); LEE (C.-U.); NUSPL (J.); STERKEN (C.); SZABO (R.) |
| AF : | School of Physics, University of Sydney/NSW 2006/Australie (1 aut., 2 aut., 5 aut., 9 aut., 12 aut., 16 aut.); Institut for Fysik og Astronomi (IFA), University of Aarhus/8000 Aarhus/Danemark (2 aut., 4 aut., 10 aut., 13 aut., 17 aut.); Department of Physics, US Air Force Academy/Colorado Springs, CO 80840/Etats-Unis (2 aut.); Instituto de Astrofísica de Andalucia, CSIC, CP3004 Granada/Espagne (3 aut.); Observatoire de Paris, LESIA, UMR 8109/Meudon/France (3 aut.); Danish AsteroSeismology Centre, University of Aarhus/8000 Aarhus/Danemark (4 aut., 10 aut., 17 aut.); Vrije Universiteit Brussel, Pleinlaan 2/1050 Brussels/Belgique (6 aut., 22 aut.); Konkoly Observatory of the Hungarian Academy of Sciences, PO BOX 67/1525 Budapest/Hongrie (7 aut., 21 aut., 23 aut.); Gemini Observatory, 670 N. A 'ohoku Pl/Hilo, HI 96720/Etats-Unis (8 aut.); European Southern Observatory, Casilla 19001/Santiago/Chili (8 aut.); Space Telescope Science Institute, 3700 San Martin Drive/Baltimore/Etats-Unis (11 aut.); Department of Astronomy and Space Science, Chungnam National University/Daejeon 305-764/Corée, République de (14 aut., 18 aut.); Korea Astronomy and Space Science Institute/Daejeon 305-348/Corée, République de (15 aut., 19 aut., 20 aut.); Physics Department, University of Florida/Gainesville, FL 32611/Etats-Unis (23 aut.) |
| DT : | Publication en série; Niveau analytique |
| SO : | Monthly Notices of the Royal Astronomical Society; ISSN 0035-8711; Coden MNRAA4; Royaume-Uni; Da. 2007; Vol. 378; No. 4; Pp. 1371-1384; Bibl. 1/2 p. |
| LA : | Anglais |
| EA : | We have made an asteroseismic analysis of the variable blue stragglers in the open cluster M67. The data set consists of photometric time-series from eight sites using nine 0.6-2.1 m telescopes with a time-baseline of 43 d. In two stars, EW Cnc and EX Cnc, we detect the highest number of frequencies (41 and 26) detected in δ Scuti stars belonging to a stellar cluster, and EW Cnc has the second highest number of frequencies detected in any δ Scuti star. We have computed a grid of pulsation models that take the effects of rotation into account. The distribution of observed and theoretical frequencies shows that in a wide frequency range a significant fraction of the radial and non-radial low-degree modes are excited to detectable amplitudes. Despite the large number of observed frequencies we cannot constrain the fundamental parameters of the stars. To make progress we need to identify the degrees of some of the modes from either multicolour photometry or spectroscopy. |
| CC : | 001E03 |
| FD : | Amas ouvert; Blue straggler; Série temporelle; Etoile type delta Scuti; Modèle; Photométrie n couleurs; Spectrométrie; Amas stellaire |
| ED : | Open clusters; Blue stragglers; Time series; Delta Scuti stars; Models; N color photometry; Spectroscopy; Star clusters |
| SD : | Modelo; Fotometría n colores |
| LO : | INIST-2067.354000162914120150 |
| ID : | 07-0329365 |
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Suarez</name><affiliation><inist:fA14 i1="04"><s1>Instituto de Astrofísica de Andalucia, CSIC, CP3004 Granada</s1><s3>ESP</s3><sZ>3 aut.</sZ></inist:fA14></affiliation><affiliation><inist:fA14 i1="05"><s1>Observatoire de Paris, LESIA, UMR 8109</s1><s2>Meudon</s2><s3>FRA</s3><sZ>3 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Arentoft, T" sort="Arentoft, T" uniqKey="Arentoft T" first="T." last="Arentoft">T. Arentoft</name><affiliation><inist:fA14 i1="02"><s1>Institut for Fysik og Astronomi (IFA), University of Aarhus</s1><s2>8000 Aarhus</s2><s3>DNK</s3><sZ>2 aut.</sZ><sZ>4 aut.</sZ><sZ>10 aut.</sZ><sZ>13 aut.</sZ><sZ>17 aut.</sZ></inist:fA14></affiliation><affiliation><inist:fA14 i1="06"><s1>Danish AsteroSeismology Centre, University of Aarhus</s1><s2>8000 Aarhus</s2><s3>DNK</s3><sZ>4 aut.</sZ><sZ>10 aut.</sZ><sZ>17 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Bedding, T R" sort="Bedding, T R" uniqKey="Bedding T" first="T. R." last="Bedding">T. R. Bedding</name><affiliation><inist:fA14 i1="01"><s1>School of Physics, University of Sydney</s1><s2>NSW 2006</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>5 aut.</sZ><sZ>9 aut.</sZ><sZ>12 aut.</sZ><sZ>16 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Bouzid, M Y" sort="Bouzid, M Y" uniqKey="Bouzid M" first="M. Y." last="Bouzid">M. Y. Bouzid</name><affiliation><inist:fA14 i1="07"><s1>Vrije Universiteit Brussel, Pleinlaan 2</s1><s2>1050 Brussels</s2><s3>BEL</s3><sZ>6 aut.</sZ><sZ>22 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Csubry, Z" sort="Csubry, Z" uniqKey="Csubry Z" first="Z." last="Csubry">Z. Csubry</name><affiliation><inist:fA14 i1="08"><s1>Konkoly Observatory of the Hungarian Academy of Sciences, PO BOX 67</s1><s2>1525 Budapest</s2><s3>HUN</s3><sZ>7 aut.</sZ><sZ>21 aut.</sZ><sZ>23 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Dall, T H" sort="Dall, T H" uniqKey="Dall T" first="T. H." last="Dall">T. H. Dall</name><affiliation><inist:fA14 i1="09"><s1>Gemini Observatory, 670 N. A 'ohoku Pl</s1><s2>Hilo, HI 96720</s2><s3>USA</s3><sZ>8 aut.</sZ></inist:fA14></affiliation><affiliation><inist:fA14 i1="10"><s1>European Southern Observatory, Casilla 19001</s1><s2>Santiago</s2><s3>CHL</s3><sZ>8 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Dind, Z E" sort="Dind, Z E" uniqKey="Dind Z" first="Z. E." last="Dind">Z. E. Dind</name><affiliation><inist:fA14 i1="01"><s1>School of Physics, University of Sydney</s1><s2>NSW 2006</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>5 aut.</sZ><sZ>9 aut.</sZ><sZ>12 aut.</sZ><sZ>16 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Frandsen, S" sort="Frandsen, S" uniqKey="Frandsen S" first="S." last="Frandsen">S. Frandsen</name><affiliation><inist:fA14 i1="02"><s1>Institut for Fysik og Astronomi (IFA), University of Aarhus</s1><s2>8000 Aarhus</s2><s3>DNK</s3><sZ>2 aut.</sZ><sZ>4 aut.</sZ><sZ>10 aut.</sZ><sZ>13 aut.</sZ><sZ>17 aut.</sZ></inist:fA14></affiliation><affiliation><inist:fA14 i1="06"><s1>Danish AsteroSeismology Centre, University of Aarhus</s1><s2>8000 Aarhus</s2><s3>DNK</s3><sZ>4 aut.</sZ><sZ>10 aut.</sZ><sZ>17 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Gilliland, R L" sort="Gilliland, R L" uniqKey="Gilliland R" first="R. L." last="Gilliland">R. L. Gilliland</name><affiliation><inist:fA14 i1="11"><s1>Space Telescope Science Institute, 3700 San Martin Drive</s1><s2>Baltimore</s2><s3>USA</s3><sZ>11 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Jacob, A P" sort="Jacob, A P" uniqKey="Jacob A" first="A. P." last="Jacob">A. P. Jacob</name><affiliation><inist:fA14 i1="01"><s1>School of Physics, University of Sydney</s1><s2>NSW 2006</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>5 aut.</sZ><sZ>9 aut.</sZ><sZ>12 aut.</sZ><sZ>16 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Jensen, H R" sort="Jensen, H R" uniqKey="Jensen H" first="H. R." last="Jensen">H. R. Jensen</name><affiliation><inist:fA14 i1="02"><s1>Institut for Fysik og Astronomi (IFA), University of Aarhus</s1><s2>8000 Aarhus</s2><s3>DNK</s3><sZ>2 aut.</sZ><sZ>4 aut.</sZ><sZ>10 aut.</sZ><sZ>13 aut.</sZ><sZ>17 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Kang, Y B" sort="Kang, Y B" uniqKey="Kang Y" first="Y. B." last="Kang">Y. B. Kang</name><affiliation><inist:fA14 i1="12"><s1>Department of Astronomy and Space Science, Chungnam National University</s1><s2>Daejeon 305-764</s2><s3>KOR</s3><sZ>14 aut.</sZ><sZ>18 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Kim, S L" sort="Kim, S L" uniqKey="Kim S" first="S.-L." last="Kim">S.-L. Kim</name><affiliation><inist:fA14 i1="13"><s1>Korea Astronomy and Space Science Institute</s1><s2>Daejeon 305-348</s2><s3>KOR</s3><sZ>15 aut.</sZ><sZ>19 aut.</sZ><sZ>20 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Kiss, L L" sort="Kiss, L L" uniqKey="Kiss L" first="L. L." last="Kiss">L. L. Kiss</name><affiliation><inist:fA14 i1="01"><s1>School of Physics, University of Sydney</s1><s2>NSW 2006</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>5 aut.</sZ><sZ>9 aut.</sZ><sZ>12 aut.</sZ><sZ>16 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Kjeldsen, H" sort="Kjeldsen, H" uniqKey="Kjeldsen H" first="H." last="Kjeldsen">H. Kjeldsen</name><affiliation><inist:fA14 i1="02"><s1>Institut for Fysik og Astronomi (IFA), University of Aarhus</s1><s2>8000 Aarhus</s2><s3>DNK</s3><sZ>2 aut.</sZ><sZ>4 aut.</sZ><sZ>10 aut.</sZ><sZ>13 aut.</sZ><sZ>17 aut.</sZ></inist:fA14></affiliation><affiliation><inist:fA14 i1="06"><s1>Danish AsteroSeismology Centre, University of Aarhus</s1><s2>8000 Aarhus</s2><s3>DNK</s3><sZ>4 aut.</sZ><sZ>10 aut.</sZ><sZ>17 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Koo, J R" sort="Koo, J R" uniqKey="Koo J" first="J.-R." last="Koo">J.-R. Koo</name><affiliation><inist:fA14 i1="12"><s1>Department of Astronomy and Space Science, Chungnam National University</s1><s2>Daejeon 305-764</s2><s3>KOR</s3><sZ>14 aut.</sZ><sZ>18 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Lee, J A" sort="Lee, J A" uniqKey="Lee J" first="J.-A." last="Lee">J.-A. Lee</name><affiliation><inist:fA14 i1="13"><s1>Korea Astronomy and Space Science Institute</s1><s2>Daejeon 305-348</s2><s3>KOR</s3><sZ>15 aut.</sZ><sZ>19 aut.</sZ><sZ>20 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Lee, C U" sort="Lee, C U" uniqKey="Lee C" first="C.-U." last="Lee">C.-U. Lee</name><affiliation><inist:fA14 i1="13"><s1>Korea Astronomy and Space Science Institute</s1><s2>Daejeon 305-348</s2><s3>KOR</s3><sZ>15 aut.</sZ><sZ>19 aut.</sZ><sZ>20 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Nuspl, J" sort="Nuspl, J" uniqKey="Nuspl J" first="J." last="Nuspl">J. Nuspl</name><affiliation><inist:fA14 i1="08"><s1>Konkoly Observatory of the Hungarian Academy of Sciences, PO BOX 67</s1><s2>1525 Budapest</s2><s3>HUN</s3><sZ>7 aut.</sZ><sZ>21 aut.</sZ><sZ>23 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Sterken, C" sort="Sterken, C" uniqKey="Sterken C" first="C." last="Sterken">C. Sterken</name><affiliation><inist:fA14 i1="07"><s1>Vrije Universiteit Brussel, Pleinlaan 2</s1><s2>1050 Brussels</s2><s3>BEL</s3><sZ>6 aut.</sZ><sZ>22 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Szabo, R" sort="Szabo, R" uniqKey="Szabo R" first="R." last="Szabo">R. Szabo</name><affiliation><inist:fA14 i1="08"><s1>Konkoly Observatory of the Hungarian Academy of Sciences, PO BOX 67</s1><s2>1525 Budapest</s2><s3>HUN</s3><sZ>7 aut.</sZ><sZ>21 aut.</sZ><sZ>23 aut.</sZ></inist:fA14></affiliation><affiliation><inist:fA14 i1="14"><s1>Physics Department, University of Florida</s1><s2>Gainesville, FL 32611</s2><s3>USA</s3><sZ>23 aut.</sZ></inist:fA14></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">07-0329365</idno><date when="2007">2007</date><idno type="stanalyst">PASCAL 07-0329365 INIST</idno><idno type="RBID">Pascal:07-0329365</idno><idno type="wicri:Area/PascalFrancis/Corpus">003B36</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Multisite campaign on the open cluster M67-III. δ Scuti pulsations in the blue stragglers</title><author><name sortKey="Bruntt, H" sort="Bruntt, H" uniqKey="Bruntt H" first="H." last="Bruntt">H. Bruntt</name><affiliation><inist:fA14 i1="01"><s1>School of Physics, University of Sydney</s1><s2>NSW 2006</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>5 aut.</sZ><sZ>9 aut.</sZ><sZ>12 aut.</sZ><sZ>16 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Stello, D" sort="Stello, D" uniqKey="Stello D" first="D." last="Stello">D. Stello</name><affiliation><inist:fA14 i1="01"><s1>School of Physics, University of Sydney</s1><s2>NSW 2006</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>5 aut.</sZ><sZ>9 aut.</sZ><sZ>12 aut.</sZ><sZ>16 aut.</sZ></inist:fA14></affiliation><affiliation><inist:fA14 i1="02"><s1>Institut for Fysik og Astronomi (IFA), University of Aarhus</s1><s2>8000 Aarhus</s2><s3>DNK</s3><sZ>2 aut.</sZ><sZ>4 aut.</sZ><sZ>10 aut.</sZ><sZ>13 aut.</sZ><sZ>17 aut.</sZ></inist:fA14></affiliation><affiliation><inist:fA14 i1="03"><s1>Department of Physics, US Air Force Academy</s1><s2>Colorado Springs, CO 80840</s2><s3>USA</s3><sZ>2 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Suarez, J C" sort="Suarez, J C" uniqKey="Suarez J" first="J. C." last="Suarez">J. C. Suarez</name><affiliation><inist:fA14 i1="04"><s1>Instituto de Astrofísica de Andalucia, CSIC, CP3004 Granada</s1><s3>ESP</s3><sZ>3 aut.</sZ></inist:fA14></affiliation><affiliation><inist:fA14 i1="05"><s1>Observatoire de Paris, LESIA, UMR 8109</s1><s2>Meudon</s2><s3>FRA</s3><sZ>3 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Arentoft, T" sort="Arentoft, T" uniqKey="Arentoft T" first="T." last="Arentoft">T. Arentoft</name><affiliation><inist:fA14 i1="02"><s1>Institut for Fysik og Astronomi (IFA), University of Aarhus</s1><s2>8000 Aarhus</s2><s3>DNK</s3><sZ>2 aut.</sZ><sZ>4 aut.</sZ><sZ>10 aut.</sZ><sZ>13 aut.</sZ><sZ>17 aut.</sZ></inist:fA14></affiliation><affiliation><inist:fA14 i1="06"><s1>Danish AsteroSeismology Centre, University of Aarhus</s1><s2>8000 Aarhus</s2><s3>DNK</s3><sZ>4 aut.</sZ><sZ>10 aut.</sZ><sZ>17 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Bedding, T R" sort="Bedding, T R" uniqKey="Bedding T" first="T. R." last="Bedding">T. R. Bedding</name><affiliation><inist:fA14 i1="01"><s1>School of Physics, University of Sydney</s1><s2>NSW 2006</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>5 aut.</sZ><sZ>9 aut.</sZ><sZ>12 aut.</sZ><sZ>16 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Bouzid, M Y" sort="Bouzid, M Y" uniqKey="Bouzid M" first="M. Y." last="Bouzid">M. Y. Bouzid</name><affiliation><inist:fA14 i1="07"><s1>Vrije Universiteit Brussel, Pleinlaan 2</s1><s2>1050 Brussels</s2><s3>BEL</s3><sZ>6 aut.</sZ><sZ>22 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Csubry, Z" sort="Csubry, Z" uniqKey="Csubry Z" first="Z." last="Csubry">Z. Csubry</name><affiliation><inist:fA14 i1="08"><s1>Konkoly Observatory of the Hungarian Academy of Sciences, PO BOX 67</s1><s2>1525 Budapest</s2><s3>HUN</s3><sZ>7 aut.</sZ><sZ>21 aut.</sZ><sZ>23 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Dall, T H" sort="Dall, T H" uniqKey="Dall T" first="T. H." last="Dall">T. H. Dall</name><affiliation><inist:fA14 i1="09"><s1>Gemini Observatory, 670 N. A 'ohoku Pl</s1><s2>Hilo, HI 96720</s2><s3>USA</s3><sZ>8 aut.</sZ></inist:fA14></affiliation><affiliation><inist:fA14 i1="10"><s1>European Southern Observatory, Casilla 19001</s1><s2>Santiago</s2><s3>CHL</s3><sZ>8 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Dind, Z E" sort="Dind, Z E" uniqKey="Dind Z" first="Z. E." last="Dind">Z. E. Dind</name><affiliation><inist:fA14 i1="01"><s1>School of Physics, University of Sydney</s1><s2>NSW 2006</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>5 aut.</sZ><sZ>9 aut.</sZ><sZ>12 aut.</sZ><sZ>16 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Frandsen, S" sort="Frandsen, S" uniqKey="Frandsen S" first="S." last="Frandsen">S. Frandsen</name><affiliation><inist:fA14 i1="02"><s1>Institut for Fysik og Astronomi (IFA), University of Aarhus</s1><s2>8000 Aarhus</s2><s3>DNK</s3><sZ>2 aut.</sZ><sZ>4 aut.</sZ><sZ>10 aut.</sZ><sZ>13 aut.</sZ><sZ>17 aut.</sZ></inist:fA14></affiliation><affiliation><inist:fA14 i1="06"><s1>Danish AsteroSeismology Centre, University of Aarhus</s1><s2>8000 Aarhus</s2><s3>DNK</s3><sZ>4 aut.</sZ><sZ>10 aut.</sZ><sZ>17 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Gilliland, R L" sort="Gilliland, R L" uniqKey="Gilliland R" first="R. L." last="Gilliland">R. L. Gilliland</name><affiliation><inist:fA14 i1="11"><s1>Space Telescope Science Institute, 3700 San Martin Drive</s1><s2>Baltimore</s2><s3>USA</s3><sZ>11 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Jacob, A P" sort="Jacob, A P" uniqKey="Jacob A" first="A. P." last="Jacob">A. P. Jacob</name><affiliation><inist:fA14 i1="01"><s1>School of Physics, University of Sydney</s1><s2>NSW 2006</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>5 aut.</sZ><sZ>9 aut.</sZ><sZ>12 aut.</sZ><sZ>16 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Jensen, H R" sort="Jensen, H R" uniqKey="Jensen H" first="H. R." last="Jensen">H. R. Jensen</name><affiliation><inist:fA14 i1="02"><s1>Institut for Fysik og Astronomi (IFA), University of Aarhus</s1><s2>8000 Aarhus</s2><s3>DNK</s3><sZ>2 aut.</sZ><sZ>4 aut.</sZ><sZ>10 aut.</sZ><sZ>13 aut.</sZ><sZ>17 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Kang, Y B" sort="Kang, Y B" uniqKey="Kang Y" first="Y. B." last="Kang">Y. B. Kang</name><affiliation><inist:fA14 i1="12"><s1>Department of Astronomy and Space Science, Chungnam National University</s1><s2>Daejeon 305-764</s2><s3>KOR</s3><sZ>14 aut.</sZ><sZ>18 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Kim, S L" sort="Kim, S L" uniqKey="Kim S" first="S.-L." last="Kim">S.-L. Kim</name><affiliation><inist:fA14 i1="13"><s1>Korea Astronomy and Space Science Institute</s1><s2>Daejeon 305-348</s2><s3>KOR</s3><sZ>15 aut.</sZ><sZ>19 aut.</sZ><sZ>20 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Kiss, L L" sort="Kiss, L L" uniqKey="Kiss L" first="L. L." last="Kiss">L. L. Kiss</name><affiliation><inist:fA14 i1="01"><s1>School of Physics, University of Sydney</s1><s2>NSW 2006</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>5 aut.</sZ><sZ>9 aut.</sZ><sZ>12 aut.</sZ><sZ>16 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Kjeldsen, H" sort="Kjeldsen, H" uniqKey="Kjeldsen H" first="H." last="Kjeldsen">H. Kjeldsen</name><affiliation><inist:fA14 i1="02"><s1>Institut for Fysik og Astronomi (IFA), University of Aarhus</s1><s2>8000 Aarhus</s2><s3>DNK</s3><sZ>2 aut.</sZ><sZ>4 aut.</sZ><sZ>10 aut.</sZ><sZ>13 aut.</sZ><sZ>17 aut.</sZ></inist:fA14></affiliation><affiliation><inist:fA14 i1="06"><s1>Danish AsteroSeismology Centre, University of Aarhus</s1><s2>8000 Aarhus</s2><s3>DNK</s3><sZ>4 aut.</sZ><sZ>10 aut.</sZ><sZ>17 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Koo, J R" sort="Koo, J R" uniqKey="Koo J" first="J.-R." last="Koo">J.-R. Koo</name><affiliation><inist:fA14 i1="12"><s1>Department of Astronomy and Space Science, Chungnam National University</s1><s2>Daejeon 305-764</s2><s3>KOR</s3><sZ>14 aut.</sZ><sZ>18 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Lee, J A" sort="Lee, J A" uniqKey="Lee J" first="J.-A." last="Lee">J.-A. Lee</name><affiliation><inist:fA14 i1="13"><s1>Korea Astronomy and Space Science Institute</s1><s2>Daejeon 305-348</s2><s3>KOR</s3><sZ>15 aut.</sZ><sZ>19 aut.</sZ><sZ>20 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Lee, C U" sort="Lee, C U" uniqKey="Lee C" first="C.-U." last="Lee">C.-U. Lee</name><affiliation><inist:fA14 i1="13"><s1>Korea Astronomy and Space Science Institute</s1><s2>Daejeon 305-348</s2><s3>KOR</s3><sZ>15 aut.</sZ><sZ>19 aut.</sZ><sZ>20 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Nuspl, J" sort="Nuspl, J" uniqKey="Nuspl J" first="J." last="Nuspl">J. Nuspl</name><affiliation><inist:fA14 i1="08"><s1>Konkoly Observatory of the Hungarian Academy of Sciences, PO BOX 67</s1><s2>1525 Budapest</s2><s3>HUN</s3><sZ>7 aut.</sZ><sZ>21 aut.</sZ><sZ>23 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Sterken, C" sort="Sterken, C" uniqKey="Sterken C" first="C." last="Sterken">C. Sterken</name><affiliation><inist:fA14 i1="07"><s1>Vrije Universiteit Brussel, Pleinlaan 2</s1><s2>1050 Brussels</s2><s3>BEL</s3><sZ>6 aut.</sZ><sZ>22 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Szabo, R" sort="Szabo, R" uniqKey="Szabo R" first="R." last="Szabo">R. Szabo</name><affiliation><inist:fA14 i1="08"><s1>Konkoly Observatory of the Hungarian Academy of Sciences, PO BOX 67</s1><s2>1525 Budapest</s2><s3>HUN</s3><sZ>7 aut.</sZ><sZ>21 aut.</sZ><sZ>23 aut.</sZ></inist:fA14></affiliation><affiliation><inist:fA14 i1="14"><s1>Physics Department, University of Florida</s1><s2>Gainesville, FL 32611</s2><s3>USA</s3><sZ>23 aut.</sZ></inist:fA14></affiliation></author></analytic><series><title level="j" type="main">Monthly Notices of the Royal Astronomical Society</title><title level="j" type="abbreviated">Mon. Not. R. Astron. Soc.</title><idno type="ISSN">0035-8711</idno><imprint><date when="2007">2007</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Monthly Notices of the Royal Astronomical Society</title><title level="j" type="abbreviated">Mon. Not. R. Astron. Soc.</title><idno type="ISSN">0035-8711</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Blue stragglers</term><term>Delta Scuti stars</term><term>Models</term><term>N color photometry</term><term>Open clusters</term><term>Spectroscopy</term><term>Star clusters</term><term>Time series</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Amas ouvert</term><term>Blue straggler</term><term>Série temporelle</term><term>Etoile type delta Scuti</term><term>Modèle</term><term>Photométrie n couleurs</term><term>Spectrométrie</term><term>Amas stellaire</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">We have made an asteroseismic analysis of the variable blue stragglers in the open cluster M67. The data set consists of photometric time-series from eight sites using nine 0.6-2.1 m telescopes with a time-baseline of 43 d. In two stars, EW Cnc and EX Cnc, we detect the highest number of frequencies (41 and 26) detected in δ Scuti stars belonging to a stellar cluster, and EW Cnc has the second highest number of frequencies detected in any δ Scuti star. We have computed a grid of pulsation models that take the effects of rotation into account. The distribution of observed and theoretical frequencies shows that in a wide frequency range a significant fraction of the radial and non-radial low-degree modes are excited to detectable amplitudes. Despite the large number of observed frequencies we cannot constrain the fundamental parameters of the stars. To make progress we need to identify the degrees of some of the modes from either multicolour photometry or spectroscopy.</div></front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0035-8711</s0></fA01><fA02 i1="01"><s0>MNRAA4</s0></fA02><fA03 i2="1"><s0>Mon. Not. R. Astron. Soc.</s0></fA03><fA05><s2>378</s2></fA05><fA06><s2>4</s2></fA06><fA08 i1="01" i2="1" l="ENG"><s1>Multisite campaign on the open cluster M67-III. δ Scuti pulsations in the blue stragglers</s1></fA08><fA11 i1="01" i2="1"><s1>BRUNTT (H.)</s1></fA11><fA11 i1="02" i2="1"><s1>STELLO (D.)</s1></fA11><fA11 i1="03" i2="1"><s1>SUAREZ (J. C.)</s1></fA11><fA11 i1="04" i2="1"><s1>ARENTOFT (T.)</s1></fA11><fA11 i1="05" i2="1"><s1>BEDDING (T. R.)</s1></fA11><fA11 i1="06" i2="1"><s1>BOUZID (M. Y.)</s1></fA11><fA11 i1="07" i2="1"><s1>CSUBRY (Z.)</s1></fA11><fA11 i1="08" i2="1"><s1>DALL (T. H.)</s1></fA11><fA11 i1="09" i2="1"><s1>DIND (Z. E.)</s1></fA11><fA11 i1="10" i2="1"><s1>FRANDSEN (S.)</s1></fA11><fA11 i1="11" i2="1"><s1>GILLILAND (R. L.)</s1></fA11><fA11 i1="12" i2="1"><s1>JACOB (A. P.)</s1></fA11><fA11 i1="13" i2="1"><s1>JENSEN (H. R.)</s1></fA11><fA11 i1="14" i2="1"><s1>KANG (Y. B.)</s1></fA11><fA11 i1="15" i2="1"><s1>KIM (S.-L.)</s1></fA11><fA11 i1="16" i2="1"><s1>KISS (L. L.)</s1></fA11><fA11 i1="17" i2="1"><s1>KJELDSEN (H.)</s1></fA11><fA11 i1="18" i2="1"><s1>KOO (J.-R.)</s1></fA11><fA11 i1="19" i2="1"><s1>LEE (J.-A.)</s1></fA11><fA11 i1="20" i2="1"><s1>LEE (C.-U.)</s1></fA11><fA11 i1="21" i2="1"><s1>NUSPL (J.)</s1></fA11><fA11 i1="22" i2="1"><s1>STERKEN (C.)</s1></fA11><fA11 i1="23" i2="1"><s1>SZABO (R.)</s1></fA11><fA14 i1="01"><s1>School of Physics, University of Sydney</s1><s2>NSW 2006</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>5 aut.</sZ><sZ>9 aut.</sZ><sZ>12 aut.</sZ><sZ>16 aut.</sZ></fA14><fA14 i1="02"><s1>Institut for Fysik og Astronomi (IFA), University of Aarhus</s1><s2>8000 Aarhus</s2><s3>DNK</s3><sZ>2 aut.</sZ><sZ>4 aut.</sZ><sZ>10 aut.</sZ><sZ>13 aut.</sZ><sZ>17 aut.</sZ></fA14><fA14 i1="03"><s1>Department of Physics, US Air Force Academy</s1><s2>Colorado Springs, CO 80840</s2><s3>USA</s3><sZ>2 aut.</sZ></fA14><fA14 i1="04"><s1>Instituto de Astrofísica de Andalucia, CSIC, CP3004 Granada</s1><s3>ESP</s3><sZ>3 aut.</sZ></fA14><fA14 i1="05"><s1>Observatoire de Paris, LESIA, UMR 8109</s1><s2>Meudon</s2><s3>FRA</s3><sZ>3 aut.</sZ></fA14><fA14 i1="06"><s1>Danish AsteroSeismology Centre, University of Aarhus</s1><s2>8000 Aarhus</s2><s3>DNK</s3><sZ>4 aut.</sZ><sZ>10 aut.</sZ><sZ>17 aut.</sZ></fA14><fA14 i1="07"><s1>Vrije Universiteit Brussel, Pleinlaan 2</s1><s2>1050 Brussels</s2><s3>BEL</s3><sZ>6 aut.</sZ><sZ>22 aut.</sZ></fA14><fA14 i1="08"><s1>Konkoly Observatory of the Hungarian Academy of Sciences, PO BOX 67</s1><s2>1525 Budapest</s2><s3>HUN</s3><sZ>7 aut.</sZ><sZ>21 aut.</sZ><sZ>23 aut.</sZ></fA14><fA14 i1="09"><s1>Gemini Observatory, 670 N. A 'ohoku Pl</s1><s2>Hilo, HI 96720</s2><s3>USA</s3><sZ>8 aut.</sZ></fA14><fA14 i1="10"><s1>European Southern Observatory, Casilla 19001</s1><s2>Santiago</s2><s3>CHL</s3><sZ>8 aut.</sZ></fA14><fA14 i1="11"><s1>Space Telescope Science Institute, 3700 San Martin Drive</s1><s2>Baltimore</s2><s3>USA</s3><sZ>11 aut.</sZ></fA14><fA14 i1="12"><s1>Department of Astronomy and Space Science, Chungnam National University</s1><s2>Daejeon 305-764</s2><s3>KOR</s3><sZ>14 aut.</sZ><sZ>18 aut.</sZ></fA14><fA14 i1="13"><s1>Korea Astronomy and Space Science Institute</s1><s2>Daejeon 305-348</s2><s3>KOR</s3><sZ>15 aut.</sZ><sZ>19 aut.</sZ><sZ>20 aut.</sZ></fA14><fA14 i1="14"><s1>Physics Department, University of Florida</s1><s2>Gainesville, FL 32611</s2><s3>USA</s3><sZ>23 aut.</sZ></fA14><fA20><s1>1371-1384</s1></fA20><fA21><s1>2007</s1></fA21><fA23 i1="01"><s0>ENG</s0></fA23><fA43 i1="01"><s1>INIST</s1><s2>2067</s2><s5>354000162914120150</s5></fA43><fA44><s0>0000</s0><s1>© 2007 INIST-CNRS. All rights reserved.</s1></fA44><fA45><s0>1/2 p.</s0></fA45><fA47 i1="01" i2="1"><s0>07-0329365</s0></fA47><fA60><s1>P</s1></fA60><fA61><s0>A</s0></fA61><fA64 i1="01" i2="1"><s0>Monthly Notices of the Royal Astronomical Society</s0></fA64><fA66 i1="01"><s0>GBR</s0></fA66><fC01 i1="01" l="ENG"><s0>We have made an asteroseismic analysis of the variable blue stragglers in the open cluster M67. The data set consists of photometric time-series from eight sites using nine 0.6-2.1 m telescopes with a time-baseline of 43 d. In two stars, EW Cnc and EX Cnc, we detect the highest number of frequencies (41 and 26) detected in δ Scuti stars belonging to a stellar cluster, and EW Cnc has the second highest number of frequencies detected in any δ Scuti star. We have computed a grid of pulsation models that take the effects of rotation into account. The distribution of observed and theoretical frequencies shows that in a wide frequency range a significant fraction of the radial and non-radial low-degree modes are excited to detectable amplitudes. Despite the large number of observed frequencies we cannot constrain the fundamental parameters of the stars. To make progress we need to identify the degrees of some of the modes from either multicolour photometry or spectroscopy.</s0></fC01><fC02 i1="01" i2="3"><s0>001E03</s0></fC02><fC03 i1="01" i2="3" l="FRE"><s0>Amas ouvert</s0><s5>26</s5></fC03><fC03 i1="01" i2="3" l="ENG"><s0>Open clusters</s0><s5>26</s5></fC03><fC03 i1="02" i2="3" l="FRE"><s0>Blue straggler</s0><s5>27</s5></fC03><fC03 i1="02" i2="3" l="ENG"><s0>Blue stragglers</s0><s5>27</s5></fC03><fC03 i1="03" i2="3" l="FRE"><s0>Série temporelle</s0><s5>28</s5></fC03><fC03 i1="03" i2="3" l="ENG"><s0>Time series</s0><s5>28</s5></fC03><fC03 i1="04" i2="3" l="FRE"><s0>Etoile type delta Scuti</s0><s5>29</s5></fC03><fC03 i1="04" i2="3" l="ENG"><s0>Delta Scuti stars</s0><s5>29</s5></fC03><fC03 i1="05" i2="X" l="FRE"><s0>Modèle</s0><s5>30</s5></fC03><fC03 i1="05" i2="X" l="ENG"><s0>Models</s0><s5>30</s5></fC03><fC03 i1="05" i2="X" l="SPA"><s0>Modelo</s0><s5>30</s5></fC03><fC03 i1="06" i2="X" l="FRE"><s0>Photométrie n couleurs</s0><s5>31</s5></fC03><fC03 i1="06" i2="X" l="ENG"><s0>N color photometry</s0><s5>31</s5></fC03><fC03 i1="06" i2="X" l="SPA"><s0>Fotometría n colores</s0><s5>31</s5></fC03><fC03 i1="07" i2="3" l="FRE"><s0>Spectrométrie</s0><s5>32</s5></fC03><fC03 i1="07" i2="3" l="ENG"><s0>Spectroscopy</s0><s5>32</s5></fC03><fC03 i1="08" i2="3" l="FRE"><s0>Amas stellaire</s0><s5>33</s5></fC03><fC03 i1="08" i2="3" l="ENG"><s0>Star clusters</s0><s5>33</s5></fC03><fN21><s1>211</s1></fN21><fN44 i1="01"><s1>OTO</s1></fN44><fN82><s1>OTO</s1></fN82></pA></standard><server><NO>PASCAL 07-0329365 INIST</NO><ET>Multisite campaign on the open cluster M67-III. δ Scuti pulsations in the blue stragglers</ET><AU>BRUNTT (H.); STELLO (D.); SUAREZ (J. C.); ARENTOFT (T.); BEDDING (T. R.); BOUZID (M. Y.); CSUBRY (Z.); DALL (T. H.); DIND (Z. E.); FRANDSEN (S.); GILLILAND (R. L.); JACOB (A. P.); JENSEN (H. R.); KANG (Y. B.); KIM (S.-L.); KISS (L. L.); KJELDSEN (H.); KOO (J.-R.); LEE (J.-A.); LEE (C.-U.); NUSPL (J.); STERKEN (C.); SZABO (R.)</AU><AF>School of Physics, University of Sydney/NSW 2006/Australie (1 aut., 2 aut., 5 aut., 9 aut., 12 aut., 16 aut.); Institut for Fysik og Astronomi (IFA), University of Aarhus/8000 Aarhus/Danemark (2 aut., 4 aut., 10 aut., 13 aut., 17 aut.); Department of Physics, US Air Force Academy/Colorado Springs, CO 80840/Etats-Unis (2 aut.); Instituto de Astrofísica de Andalucia, CSIC, CP3004 Granada/Espagne (3 aut.); Observatoire de Paris, LESIA, UMR 8109/Meudon/France (3 aut.); Danish AsteroSeismology Centre, University of Aarhus/8000 Aarhus/Danemark (4 aut., 10 aut., 17 aut.); Vrije Universiteit Brussel, Pleinlaan 2/1050 Brussels/Belgique (6 aut., 22 aut.); Konkoly Observatory of the Hungarian Academy of Sciences, PO BOX 67/1525 Budapest/Hongrie (7 aut., 21 aut., 23 aut.); Gemini Observatory, 670 N. A 'ohoku Pl/Hilo, HI 96720/Etats-Unis (8 aut.); European Southern Observatory, Casilla 19001/Santiago/Chili (8 aut.); Space Telescope Science Institute, 3700 San Martin Drive/Baltimore/Etats-Unis (11 aut.); Department of Astronomy and Space Science, Chungnam National University/Daejeon 305-764/Corée, République de (14 aut., 18 aut.); Korea Astronomy and Space Science Institute/Daejeon 305-348/Corée, République de (15 aut., 19 aut., 20 aut.); Physics Department, University of Florida/Gainesville, FL 32611/Etats-Unis (23 aut.)</AF><DT>Publication en série; Niveau analytique</DT><SO>Monthly Notices of the Royal Astronomical Society; ISSN 0035-8711; Coden MNRAA4; Royaume-Uni; Da. 2007; Vol. 378; No. 4; Pp. 1371-1384; Bibl. 1/2 p.</SO><LA>Anglais</LA><EA>We have made an asteroseismic analysis of the variable blue stragglers in the open cluster M67. The data set consists of photometric time-series from eight sites using nine 0.6-2.1 m telescopes with a time-baseline of 43 d. In two stars, EW Cnc and EX Cnc, we detect the highest number of frequencies (41 and 26) detected in δ Scuti stars belonging to a stellar cluster, and EW Cnc has the second highest number of frequencies detected in any δ Scuti star. We have computed a grid of pulsation models that take the effects of rotation into account. The distribution of observed and theoretical frequencies shows that in a wide frequency range a significant fraction of the radial and non-radial low-degree modes are excited to detectable amplitudes. Despite the large number of observed frequencies we cannot constrain the fundamental parameters of the stars. To make progress we need to identify the degrees of some of the modes from either multicolour photometry or spectroscopy.</EA><CC>001E03</CC><FD>Amas ouvert; Blue straggler; Série temporelle; Etoile type delta Scuti; Modèle; Photométrie n couleurs; Spectrométrie; Amas stellaire</FD><ED>Open clusters; Blue stragglers; Time series; Delta Scuti stars; Models; N color photometry; Spectroscopy; Star clusters</ED><SD>Modelo; Fotometría n colores</SD><LO>INIST-2067.354000162914120150</LO><ID>07-0329365</ID></server></inist></record>Pour manipuler ce document sous Unix (Dilib)
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