Solar-like oscillations with low amplitude in the CoRoT target HD 181906
Identifieur interne : 008086 ( Main/Exploration ); précédent : 008085; suivant : 008087Solar-like oscillations with low amplitude in the CoRoT target HD 181906
Auteurs : R. A. Garcia [France] ; C. Regulo [Espagne] ; R. Samadi [France] ; J. Ballot [France] ; C. Barban [France] ; O. Benomar [France] ; W. J. Chaplin [Royaume-Uni] ; P. Gaulme [France] ; T. Appourchaux [France] ; S. Mathur [Inde] ; B. Mosser [France] ; T. Toutain [Royaume-Uni] ; G. A. Verner [Royaume-Uni] ; M. Auvergne [France] ; A. Baglin [France] ; F. Baudin [France] ; P. Boumier [France] ; H. Bruntt [France, Australie] ; C. Catala [France] ; S. Deheuvels [France] ; Y. Elsworth [Royaume-Uni] ; S. J. Jimenez-Reyes [Espagne] ; E. Michel [France] ; F. Perez Hernandez [Espagne] ; I. W. Roxburgh [France, Royaume-Uni] ; D. Salabert [Espagne]Source :
- Astronomy and astrophysics : (Berlin. Print) [ 0004-6361 ] ; 2009.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
Context. The F8 star HD 181906 (effective temperature ∼6300 K) was observed for 156 days by the CoRoT satellite during the first long run in the direction of the galactic centre. Analysis of the data reveals a spectrum of solar-like acoustic oscillations. However, the faintness of the target (mv = 7.65) means the signal-to-noise (S/N) in the acoustic modes is quite low, and this low S/N leads to complications in the analysis. Aims. We extract global variables of the star, as well as key parameters of the p modes observed in the power spectrum of the lightcurve. Methods. The power spectrum of the lightcurve, a wavelet transform and spot fitting were used to obtain the average rotation rate of the star and its inclination angle. Then, the autocorrelation of the power spectrum and the power spectrum of the power spectrum were used to properly determine the large separation. Finally, estimations of the mode parameters were done by maximizing the likelihood of a global fit, where several modes were fit simultaneously. Results. We have been able to infer the mean surface rotation rate of the star (∼4 μHz) with indications of the presence of surface differential rotation, the large separation of the p modes (∼87 μHz), hence also the "ridges" corresponding to overtones of the acoustic modes.
Affiliations:
- Australie, Espagne, France, Inde, Royaume-Uni
- Angleterre, Midi-Pyrénées, Midlands de l'Ouest, Nouvelle-Galles du Sud, Occitanie (région administrative), Île-de-France
- Birmingham, Gif-sur-Yvette, Meudon, Orsay, Paris, Sydney, Toulouse
- Université Paris-Sud, Université Pierre-et-Marie-Curie, Université de Birmingham, Université de Sydney
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Regulo</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Instituto de Astrofísica de Canarias</s1><s2>38205 La Laguna, Tenerife</s2><s3>ESP</s3><sZ>2 aut.</sZ><sZ>22 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ></inist:fA14><country>Espagne</country><wicri:noRegion>Instituto de Astrofísica de Canarias</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Universidad de La Laguna</s1><s2>38206 La Laguna, Tenerife</s2><s3>ESP</s3><sZ>2 aut.</sZ><sZ>24 aut.</sZ></inist:fA14><country>Espagne</country><wicri:noRegion>Universidad de La Laguna</wicri:noRegion></affiliation></author><author><name sortKey="Samadi, R" sort="Samadi, R" uniqKey="Samadi R" first="R." last="Samadi">R. Samadi</name><affiliation wicri:level="4"><inist:fA14 i1="04"><s1>LESIA, UMR8109, Université Pierre et Marie Curie, Université Denis Diderot, Obs. de Paris</s1><s2>92195 Meudon</s2><s3>FRA</s3><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>11 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>18 aut.</sZ><sZ>19 aut.</sZ><sZ>20 aut.</sZ><sZ>23 aut.</sZ><sZ>25 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>92195 Meudon</wicri:noRegion><wicri:noRegion>Obs. de Paris</wicri:noRegion><wicri:noRegion>92195 Meudon</wicri:noRegion><orgName type="university">Université Pierre-et-Marie-Curie</orgName><placeName><settlement type="city">Paris</settlement><region type="region" nuts="2">Île-de-France</region></placeName></affiliation></author><author><name sortKey="Ballot, J" sort="Ballot, J" uniqKey="Ballot J" first="J." last="Ballot">J. Ballot</name><affiliation wicri:level="1"><inist:fA14 i1="05"><s1>Laboratoire d'Astrophysique de Toulouse-Tarbes, Université de Toulouse, CNRS, 14 Av. Edouard Belin</s1><s2>31400 Toulouse</s2><s3>FRA</s3><sZ>4 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="Barban, C" sort="Barban, C" uniqKey="Barban C" first="C." last="Barban">C. Barban</name><affiliation wicri:level="4"><inist:fA14 i1="04"><s1>LESIA, UMR8109, Université Pierre et Marie Curie, Université Denis Diderot, Obs. de Paris</s1><s2>92195 Meudon</s2><s3>FRA</s3><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>11 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>18 aut.</sZ><sZ>19 aut.</sZ><sZ>20 aut.</sZ><sZ>23 aut.</sZ><sZ>25 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>92195 Meudon</wicri:noRegion><wicri:noRegion>Obs. de Paris</wicri:noRegion><wicri:noRegion>92195 Meudon</wicri:noRegion><orgName type="university">Université Pierre-et-Marie-Curie</orgName><placeName><settlement type="city">Paris</settlement><region type="region" nuts="2">Île-de-France</region></placeName></affiliation></author><author><name sortKey="Benomar, O" sort="Benomar, O" uniqKey="Benomar O" first="O." last="Benomar">O. Benomar</name><affiliation wicri:level="4"><inist:fA14 i1="06"><s1>Institut d'Astrophysique Spatiale, UMR8617, Université Paris XI, Bâtiment 121</s1><s2>91405 Orsay</s2><s3>FRA</s3><sZ>6 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>91405 Orsay</wicri:noRegion><wicri:noRegion>Bâtiment 121</wicri:noRegion><wicri:noRegion>91405 Orsay</wicri:noRegion><orgName type="university">Université Paris-Sud</orgName><placeName><settlement type="city">Orsay</settlement><region type="region" nuts="2">Île-de-France</region></placeName></affiliation></author><author><name sortKey="Chaplin, W J" sort="Chaplin, W J" uniqKey="Chaplin W" first="W. J." last="Chaplin">W. J. 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Mathur</name><affiliation wicri:level="1"><inist:fA14 i1="08"><s1>Indian Institute of Astrophysics</s1><s2>Koramangala, Bangalore 560034</s2><s3>IND</s3><sZ>10 aut.</sZ></inist:fA14><country>Inde</country><wicri:noRegion>Indian Institute of Astrophysics</wicri:noRegion></affiliation></author><author><name sortKey="Mosser, B" sort="Mosser, B" uniqKey="Mosser B" first="B." last="Mosser">B. Mosser</name><affiliation wicri:level="4"><inist:fA14 i1="04"><s1>LESIA, UMR8109, Université Pierre et Marie Curie, Université Denis Diderot, Obs. de Paris</s1><s2>92195 Meudon</s2><s3>FRA</s3><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>11 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>18 aut.</sZ><sZ>19 aut.</sZ><sZ>20 aut.</sZ><sZ>23 aut.</sZ><sZ>25 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>92195 Meudon</wicri:noRegion><wicri:noRegion>Obs. de Paris</wicri:noRegion><wicri:noRegion>92195 Meudon</wicri:noRegion><orgName type="university">Université Pierre-et-Marie-Curie</orgName><placeName><settlement type="city">Paris</settlement><region type="region" nuts="2">Île-de-France</region></placeName></affiliation></author><author><name sortKey="Toutain, T" sort="Toutain, T" uniqKey="Toutain T" first="T." last="Toutain">T. Toutain</name><affiliation wicri:level="4"><inist:fA14 i1="07"><s1>School of Physics and Astronomy, University of Birmingham</s1><s2>Edgbaston, Birmingham B 15 2TT</s2><s3>GBR</s3><sZ>7 aut.</sZ><sZ>12 aut.</sZ><sZ>21 aut.</sZ></inist:fA14><country>Royaume-Uni</country><placeName><settlement type="city">Birmingham</settlement><region type="country">Angleterre</region><region type="région" nuts="1">Midlands de l'Ouest</region></placeName><orgName type="university">Université de Birmingham</orgName></affiliation></author><author><name sortKey="Verner, G A" sort="Verner, G A" uniqKey="Verner G" first="G. A." last="Verner">G. A. Verner</name><affiliation wicri:level="1"><inist:fA14 i1="09"><s1>Astronomy Unit, Queen Mary, University of London Mile End Road</s1><s2>London E1 4NS</s2><s3>GBR</s3><sZ>13 aut.</sZ><sZ>25 aut.</sZ></inist:fA14><country>Royaume-Uni</country><wicri:noRegion>London E1 4NS</wicri:noRegion></affiliation></author><author><name sortKey="Auvergne, M" sort="Auvergne, M" uniqKey="Auvergne M" first="M." last="Auvergne">M. Auvergne</name><affiliation wicri:level="4"><inist:fA14 i1="04"><s1>LESIA, UMR8109, Université Pierre et Marie Curie, Université Denis Diderot, Obs. de Paris</s1><s2>92195 Meudon</s2><s3>FRA</s3><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>11 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>18 aut.</sZ><sZ>19 aut.</sZ><sZ>20 aut.</sZ><sZ>23 aut.</sZ><sZ>25 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>92195 Meudon</wicri:noRegion><wicri:noRegion>Obs. de Paris</wicri:noRegion><wicri:noRegion>92195 Meudon</wicri:noRegion><orgName type="university">Université Pierre-et-Marie-Curie</orgName><placeName><settlement type="city">Paris</settlement><region type="region" nuts="2">Île-de-France</region></placeName></affiliation></author><author><name sortKey="Baglin, A" sort="Baglin, A" uniqKey="Baglin A" first="A." last="Baglin">A. Baglin</name><affiliation wicri:level="4"><inist:fA14 i1="04"><s1>LESIA, UMR8109, Université Pierre et Marie Curie, Université Denis Diderot, Obs. de Paris</s1><s2>92195 Meudon</s2><s3>FRA</s3><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>11 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>18 aut.</sZ><sZ>19 aut.</sZ><sZ>20 aut.</sZ><sZ>23 aut.</sZ><sZ>25 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>92195 Meudon</wicri:noRegion><wicri:noRegion>Obs. de Paris</wicri:noRegion><wicri:noRegion>92195 Meudon</wicri:noRegion><orgName type="university">Université Pierre-et-Marie-Curie</orgName><placeName><settlement type="city">Paris</settlement><region type="region" nuts="2">Île-de-France</region></placeName></affiliation></author><author><name sortKey="Baudin, F" sort="Baudin, F" uniqKey="Baudin F" first="F." last="Baudin">F. Baudin</name><affiliation wicri:level="4"><inist:fA14 i1="06"><s1>Institut d'Astrophysique Spatiale, UMR8617, Université Paris XI, Bâtiment 121</s1><s2>91405 Orsay</s2><s3>FRA</s3><sZ>6 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>91405 Orsay</wicri:noRegion><wicri:noRegion>Bâtiment 121</wicri:noRegion><wicri:noRegion>91405 Orsay</wicri:noRegion><orgName type="university">Université Paris-Sud</orgName><placeName><settlement type="city">Orsay</settlement><region type="region" nuts="2">Île-de-France</region></placeName></affiliation></author><author><name sortKey="Boumier, P" sort="Boumier, P" uniqKey="Boumier P" first="P." last="Boumier">P. Boumier</name><affiliation wicri:level="4"><inist:fA14 i1="06"><s1>Institut d'Astrophysique Spatiale, UMR8617, Université Paris XI, Bâtiment 121</s1><s2>91405 Orsay</s2><s3>FRA</s3><sZ>6 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>91405 Orsay</wicri:noRegion><wicri:noRegion>Bâtiment 121</wicri:noRegion><wicri:noRegion>91405 Orsay</wicri:noRegion><orgName type="university">Université Paris-Sud</orgName><placeName><settlement type="city">Orsay</settlement><region type="region" nuts="2">Île-de-France</region></placeName></affiliation></author><author><name sortKey="Bruntt, H" sort="Bruntt, H" uniqKey="Bruntt H" first="H." last="Bruntt">H. Bruntt</name><affiliation wicri:level="4"><inist:fA14 i1="04"><s1>LESIA, UMR8109, Université Pierre et Marie Curie, Université Denis Diderot, Obs. de Paris</s1><s2>92195 Meudon</s2><s3>FRA</s3><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>11 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>18 aut.</sZ><sZ>19 aut.</sZ><sZ>20 aut.</sZ><sZ>23 aut.</sZ><sZ>25 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>92195 Meudon</wicri:noRegion><wicri:noRegion>Obs. de Paris</wicri:noRegion><wicri:noRegion>92195 Meudon</wicri:noRegion><orgName type="university">Université Pierre-et-Marie-Curie</orgName><placeName><settlement type="city">Paris</settlement><region type="region" nuts="2">Île-de-France</region></placeName></affiliation><affiliation wicri:level="4"><inist:fA14 i1="10"><s1>Sydney Institute for Astronomy, School of Physics, The University of Sydney</s1><s2>NSW 2006</s2><s3>AUS</s3><sZ>18 aut.</sZ></inist:fA14><country>Australie</country><placeName><settlement type="city">Sydney</settlement><region type="état">Nouvelle-Galles du Sud</region></placeName><orgName type="university">Université de Sydney</orgName></affiliation></author><author><name sortKey="Catala, C" sort="Catala, C" uniqKey="Catala C" first="C." last="Catala">C. Catala</name><affiliation wicri:level="4"><inist:fA14 i1="04"><s1>LESIA, UMR8109, Université Pierre et Marie Curie, Université Denis Diderot, Obs. de Paris</s1><s2>92195 Meudon</s2><s3>FRA</s3><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>11 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>18 aut.</sZ><sZ>19 aut.</sZ><sZ>20 aut.</sZ><sZ>23 aut.</sZ><sZ>25 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Meudon</settlement><settlement type="city">Paris</settlement></placeName><orgName type="university">Université Pierre-et-Marie-Curie</orgName></affiliation></author><author><name sortKey="Deheuvels, S" sort="Deheuvels, S" uniqKey="Deheuvels S" first="S." last="Deheuvels">S. Deheuvels</name><affiliation wicri:level="4"><inist:fA14 i1="04"><s1>LESIA, UMR8109, Université Pierre et Marie Curie, Université Denis Diderot, Obs. de Paris</s1><s2>92195 Meudon</s2><s3>FRA</s3><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>11 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>18 aut.</sZ><sZ>19 aut.</sZ><sZ>20 aut.</sZ><sZ>23 aut.</sZ><sZ>25 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Meudon</settlement><settlement type="city">Paris</settlement></placeName><orgName type="university">Université Pierre-et-Marie-Curie</orgName></affiliation></author><author><name sortKey="Elsworth, Y" sort="Elsworth, Y" uniqKey="Elsworth Y" first="Y." last="Elsworth">Y. Elsworth</name><affiliation wicri:level="4"><inist:fA14 i1="07"><s1>School of Physics and Astronomy, University of Birmingham</s1><s2>Edgbaston, Birmingham B 15 2TT</s2><s3>GBR</s3><sZ>7 aut.</sZ><sZ>12 aut.</sZ><sZ>21 aut.</sZ></inist:fA14><country>Royaume-Uni</country><placeName><settlement type="city">Birmingham</settlement><region type="country">Angleterre</region><region type="région" nuts="1">Midlands de l'Ouest</region></placeName><orgName type="university">Université de Birmingham</orgName></affiliation></author><author><name sortKey="Jimenez Reyes, S J" sort="Jimenez Reyes, S J" uniqKey="Jimenez Reyes S" first="S. J." last="Jimenez-Reyes">S. J. Jimenez-Reyes</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Instituto de Astrofísica de Canarias</s1><s2>38205 La Laguna, Tenerife</s2><s3>ESP</s3><sZ>2 aut.</sZ><sZ>22 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ></inist:fA14><country>Espagne</country><wicri:noRegion>Instituto de Astrofísica de Canarias</wicri:noRegion></affiliation></author><author><name sortKey="Michel, E" sort="Michel, E" uniqKey="Michel E" first="E." last="Michel">E. Michel</name><affiliation wicri:level="4"><inist:fA14 i1="04"><s1>LESIA, UMR8109, Université Pierre et Marie Curie, Université Denis Diderot, Obs. de Paris</s1><s2>92195 Meudon</s2><s3>FRA</s3><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>11 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>18 aut.</sZ><sZ>19 aut.</sZ><sZ>20 aut.</sZ><sZ>23 aut.</sZ><sZ>25 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Meudon</settlement><settlement type="city">Paris</settlement></placeName><orgName type="university">Université Pierre-et-Marie-Curie</orgName></affiliation></author><author><name sortKey="Perez Hernandez, F" sort="Perez Hernandez, F" uniqKey="Perez Hernandez F" first="F." last="Perez Hernandez">F. Perez Hernandez</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Instituto de Astrofísica de Canarias</s1><s2>38205 La Laguna, Tenerife</s2><s3>ESP</s3><sZ>2 aut.</sZ><sZ>22 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ></inist:fA14><country>Espagne</country><wicri:noRegion>Instituto de Astrofísica de Canarias</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Universidad de La Laguna</s1><s2>38206 La Laguna, Tenerife</s2><s3>ESP</s3><sZ>2 aut.</sZ><sZ>24 aut.</sZ></inist:fA14><country>Espagne</country><wicri:noRegion>Universidad de La Laguna</wicri:noRegion></affiliation></author><author><name sortKey="Roxburgh, I W" sort="Roxburgh, I W" uniqKey="Roxburgh I" first="I. W." last="Roxburgh">I. W. Roxburgh</name><affiliation wicri:level="4"><inist:fA14 i1="04"><s1>LESIA, UMR8109, Université Pierre et Marie Curie, Université Denis Diderot, Obs. de Paris</s1><s2>92195 Meudon</s2><s3>FRA</s3><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>11 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>18 aut.</sZ><sZ>19 aut.</sZ><sZ>20 aut.</sZ><sZ>23 aut.</sZ><sZ>25 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Meudon</settlement><settlement type="city">Paris</settlement></placeName><orgName type="university">Université Pierre-et-Marie-Curie</orgName></affiliation><affiliation wicri:level="1"><inist:fA14 i1="09"><s1>Astronomy Unit, Queen Mary, University of London Mile End Road</s1><s2>London E1 4NS</s2><s3>GBR</s3><sZ>13 aut.</sZ><sZ>25 aut.</sZ></inist:fA14><country>Royaume-Uni</country><wicri:noRegion>London E1 4NS</wicri:noRegion></affiliation></author><author><name sortKey="Salabert, D" sort="Salabert, D" uniqKey="Salabert D" first="D." last="Salabert">D. Salabert</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Instituto de Astrofísica de Canarias</s1><s2>38205 La Laguna, Tenerife</s2><s3>ESP</s3><sZ>2 aut.</sZ><sZ>22 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ></inist:fA14><country>Espagne</country><wicri:noRegion>Instituto de Astrofísica de Canarias</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">10-0011908</idno><date when="2009">2009</date><idno type="stanalyst">PASCAL 10-0011908 INIST</idno><idno type="RBID">Pascal:10-0011908</idno><idno type="wicri:Area/PascalFrancis/Corpus">002980</idno><idno type="wicri:Area/PascalFrancis/Curation">003603</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">002839</idno><idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">002839</idno><idno type="wicri:doubleKey">0004-6361:2009:Garcia R:solar:like:oscillations</idno><idno type="wicri:Area/Main/Merge">008808</idno><idno type="wicri:Area/Main/Curation">008086</idno><idno type="wicri:Area/Main/Exploration">008086</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Solar-like oscillations with low amplitude in the CoRoT target HD 181906</title><author><name sortKey="Garcia, R A" sort="Garcia, R A" uniqKey="Garcia R" first="R. A." last="Garcia">R. A. Garcia</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Laboratoire AIM, CEA/DSM-CNRS-Université Paris Diderot; CEA, IRFU, SAp, centre de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>1 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="Regulo, C" sort="Regulo, C" uniqKey="Regulo C" first="C." last="Regulo">C. Regulo</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Instituto de Astrofísica de Canarias</s1><s2>38205 La Laguna, Tenerife</s2><s3>ESP</s3><sZ>2 aut.</sZ><sZ>22 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ></inist:fA14><country>Espagne</country><wicri:noRegion>Instituto de Astrofísica de Canarias</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Universidad de La Laguna</s1><s2>38206 La Laguna, Tenerife</s2><s3>ESP</s3><sZ>2 aut.</sZ><sZ>24 aut.</sZ></inist:fA14><country>Espagne</country><wicri:noRegion>Universidad de La Laguna</wicri:noRegion></affiliation></author><author><name sortKey="Samadi, R" sort="Samadi, R" uniqKey="Samadi R" first="R." last="Samadi">R. Samadi</name><affiliation wicri:level="4"><inist:fA14 i1="04"><s1>LESIA, UMR8109, Université Pierre et Marie Curie, Université Denis Diderot, Obs. de Paris</s1><s2>92195 Meudon</s2><s3>FRA</s3><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>11 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>18 aut.</sZ><sZ>19 aut.</sZ><sZ>20 aut.</sZ><sZ>23 aut.</sZ><sZ>25 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>92195 Meudon</wicri:noRegion><wicri:noRegion>Obs. de Paris</wicri:noRegion><wicri:noRegion>92195 Meudon</wicri:noRegion><orgName type="university">Université Pierre-et-Marie-Curie</orgName><placeName><settlement type="city">Paris</settlement><region type="region" nuts="2">Île-de-France</region></placeName></affiliation></author><author><name sortKey="Ballot, J" sort="Ballot, J" uniqKey="Ballot J" first="J." last="Ballot">J. Ballot</name><affiliation wicri:level="1"><inist:fA14 i1="05"><s1>Laboratoire d'Astrophysique de Toulouse-Tarbes, Université de Toulouse, CNRS, 14 Av. Edouard Belin</s1><s2>31400 Toulouse</s2><s3>FRA</s3><sZ>4 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="Barban, C" sort="Barban, C" uniqKey="Barban C" first="C." last="Barban">C. Barban</name><affiliation wicri:level="4"><inist:fA14 i1="04"><s1>LESIA, UMR8109, Université Pierre et Marie Curie, Université Denis Diderot, Obs. de Paris</s1><s2>92195 Meudon</s2><s3>FRA</s3><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>11 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>18 aut.</sZ><sZ>19 aut.</sZ><sZ>20 aut.</sZ><sZ>23 aut.</sZ><sZ>25 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>92195 Meudon</wicri:noRegion><wicri:noRegion>Obs. de Paris</wicri:noRegion><wicri:noRegion>92195 Meudon</wicri:noRegion><orgName type="university">Université Pierre-et-Marie-Curie</orgName><placeName><settlement type="city">Paris</settlement><region type="region" nuts="2">Île-de-France</region></placeName></affiliation></author><author><name sortKey="Benomar, O" sort="Benomar, O" uniqKey="Benomar O" first="O." last="Benomar">O. Benomar</name><affiliation wicri:level="4"><inist:fA14 i1="06"><s1>Institut d'Astrophysique Spatiale, UMR8617, Université Paris XI, Bâtiment 121</s1><s2>91405 Orsay</s2><s3>FRA</s3><sZ>6 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>91405 Orsay</wicri:noRegion><wicri:noRegion>Bâtiment 121</wicri:noRegion><wicri:noRegion>91405 Orsay</wicri:noRegion><orgName type="university">Université Paris-Sud</orgName><placeName><settlement type="city">Orsay</settlement><region type="region" nuts="2">Île-de-France</region></placeName></affiliation></author><author><name sortKey="Chaplin, W J" sort="Chaplin, W J" uniqKey="Chaplin W" first="W. J." last="Chaplin">W. J. Chaplin</name><affiliation wicri:level="4"><inist:fA14 i1="07"><s1>School of Physics and Astronomy, University of Birmingham</s1><s2>Edgbaston, Birmingham B 15 2TT</s2><s3>GBR</s3><sZ>7 aut.</sZ><sZ>12 aut.</sZ><sZ>21 aut.</sZ></inist:fA14><country>Royaume-Uni</country><placeName><settlement type="city">Birmingham</settlement><region type="country">Angleterre</region><region type="région" nuts="1">Midlands de l'Ouest</region></placeName><orgName type="university">Université de Birmingham</orgName></affiliation></author><author><name sortKey="Gaulme, P" sort="Gaulme, P" uniqKey="Gaulme P" first="P." last="Gaulme">P. Gaulme</name><affiliation wicri:level="4"><inist:fA14 i1="06"><s1>Institut d'Astrophysique Spatiale, UMR8617, Université Paris XI, Bâtiment 121</s1><s2>91405 Orsay</s2><s3>FRA</s3><sZ>6 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Orsay</settlement><settlement type="city">Orsay</settlement></placeName><orgName type="university">Université Paris-Sud</orgName></affiliation></author><author><name sortKey="Appourchaux, T" sort="Appourchaux, T" uniqKey="Appourchaux T" first="T." last="Appourchaux">T. Appourchaux</name><affiliation wicri:level="4"><inist:fA14 i1="06"><s1>Institut d'Astrophysique Spatiale, UMR8617, Université Paris XI, Bâtiment 121</s1><s2>91405 Orsay</s2><s3>FRA</s3><sZ>6 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>91405 Orsay</wicri:noRegion><wicri:noRegion>Bâtiment 121</wicri:noRegion><wicri:noRegion>91405 Orsay</wicri:noRegion><orgName type="university">Université Paris-Sud</orgName><placeName><settlement type="city">Orsay</settlement><region type="region" nuts="2">Île-de-France</region></placeName></affiliation></author><author><name sortKey="Mathur, S" sort="Mathur, S" uniqKey="Mathur S" first="S." last="Mathur">S. Mathur</name><affiliation wicri:level="1"><inist:fA14 i1="08"><s1>Indian Institute of Astrophysics</s1><s2>Koramangala, Bangalore 560034</s2><s3>IND</s3><sZ>10 aut.</sZ></inist:fA14><country>Inde</country><wicri:noRegion>Indian Institute of Astrophysics</wicri:noRegion></affiliation></author><author><name sortKey="Mosser, B" sort="Mosser, B" uniqKey="Mosser B" first="B." last="Mosser">B. Mosser</name><affiliation wicri:level="4"><inist:fA14 i1="04"><s1>LESIA, UMR8109, Université Pierre et Marie Curie, Université Denis Diderot, Obs. de Paris</s1><s2>92195 Meudon</s2><s3>FRA</s3><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>11 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>18 aut.</sZ><sZ>19 aut.</sZ><sZ>20 aut.</sZ><sZ>23 aut.</sZ><sZ>25 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>92195 Meudon</wicri:noRegion><wicri:noRegion>Obs. de Paris</wicri:noRegion><wicri:noRegion>92195 Meudon</wicri:noRegion><orgName type="university">Université Pierre-et-Marie-Curie</orgName><placeName><settlement type="city">Paris</settlement><region type="region" nuts="2">Île-de-France</region></placeName></affiliation></author><author><name sortKey="Toutain, T" sort="Toutain, T" uniqKey="Toutain T" first="T." last="Toutain">T. Toutain</name><affiliation wicri:level="4"><inist:fA14 i1="07"><s1>School of Physics and Astronomy, University of Birmingham</s1><s2>Edgbaston, Birmingham B 15 2TT</s2><s3>GBR</s3><sZ>7 aut.</sZ><sZ>12 aut.</sZ><sZ>21 aut.</sZ></inist:fA14><country>Royaume-Uni</country><placeName><settlement type="city">Birmingham</settlement><region type="country">Angleterre</region><region type="région" nuts="1">Midlands de l'Ouest</region></placeName><orgName type="university">Université de Birmingham</orgName></affiliation></author><author><name sortKey="Verner, G A" sort="Verner, G A" uniqKey="Verner G" first="G. A." last="Verner">G. A. Verner</name><affiliation wicri:level="1"><inist:fA14 i1="09"><s1>Astronomy Unit, Queen Mary, University of London Mile End Road</s1><s2>London E1 4NS</s2><s3>GBR</s3><sZ>13 aut.</sZ><sZ>25 aut.</sZ></inist:fA14><country>Royaume-Uni</country><wicri:noRegion>London E1 4NS</wicri:noRegion></affiliation></author><author><name sortKey="Auvergne, M" sort="Auvergne, M" uniqKey="Auvergne M" first="M." last="Auvergne">M. Auvergne</name><affiliation wicri:level="4"><inist:fA14 i1="04"><s1>LESIA, UMR8109, Université Pierre et Marie Curie, Université Denis Diderot, Obs. de Paris</s1><s2>92195 Meudon</s2><s3>FRA</s3><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>11 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>18 aut.</sZ><sZ>19 aut.</sZ><sZ>20 aut.</sZ><sZ>23 aut.</sZ><sZ>25 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>92195 Meudon</wicri:noRegion><wicri:noRegion>Obs. de Paris</wicri:noRegion><wicri:noRegion>92195 Meudon</wicri:noRegion><orgName type="university">Université Pierre-et-Marie-Curie</orgName><placeName><settlement type="city">Paris</settlement><region type="region" nuts="2">Île-de-France</region></placeName></affiliation></author><author><name sortKey="Baglin, A" sort="Baglin, A" uniqKey="Baglin A" first="A." last="Baglin">A. Baglin</name><affiliation wicri:level="4"><inist:fA14 i1="04"><s1>LESIA, UMR8109, Université Pierre et Marie Curie, Université Denis Diderot, Obs. de Paris</s1><s2>92195 Meudon</s2><s3>FRA</s3><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>11 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>18 aut.</sZ><sZ>19 aut.</sZ><sZ>20 aut.</sZ><sZ>23 aut.</sZ><sZ>25 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>92195 Meudon</wicri:noRegion><wicri:noRegion>Obs. de Paris</wicri:noRegion><wicri:noRegion>92195 Meudon</wicri:noRegion><orgName type="university">Université Pierre-et-Marie-Curie</orgName><placeName><settlement type="city">Paris</settlement><region type="region" nuts="2">Île-de-France</region></placeName></affiliation></author><author><name sortKey="Baudin, F" sort="Baudin, F" uniqKey="Baudin F" first="F." last="Baudin">F. Baudin</name><affiliation wicri:level="4"><inist:fA14 i1="06"><s1>Institut d'Astrophysique Spatiale, UMR8617, Université Paris XI, Bâtiment 121</s1><s2>91405 Orsay</s2><s3>FRA</s3><sZ>6 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>91405 Orsay</wicri:noRegion><wicri:noRegion>Bâtiment 121</wicri:noRegion><wicri:noRegion>91405 Orsay</wicri:noRegion><orgName type="university">Université Paris-Sud</orgName><placeName><settlement type="city">Orsay</settlement><region type="region" nuts="2">Île-de-France</region></placeName></affiliation></author><author><name sortKey="Boumier, P" sort="Boumier, P" uniqKey="Boumier P" first="P." last="Boumier">P. Boumier</name><affiliation wicri:level="4"><inist:fA14 i1="06"><s1>Institut d'Astrophysique Spatiale, UMR8617, Université Paris XI, Bâtiment 121</s1><s2>91405 Orsay</s2><s3>FRA</s3><sZ>6 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>16 aut.</sZ><sZ>17 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>91405 Orsay</wicri:noRegion><wicri:noRegion>Bâtiment 121</wicri:noRegion><wicri:noRegion>91405 Orsay</wicri:noRegion><orgName type="university">Université Paris-Sud</orgName><placeName><settlement type="city">Orsay</settlement><region type="region" nuts="2">Île-de-France</region></placeName></affiliation></author><author><name sortKey="Bruntt, H" sort="Bruntt, H" uniqKey="Bruntt H" first="H." last="Bruntt">H. Bruntt</name><affiliation wicri:level="4"><inist:fA14 i1="04"><s1>LESIA, UMR8109, Université Pierre et Marie Curie, Université Denis Diderot, Obs. de Paris</s1><s2>92195 Meudon</s2><s3>FRA</s3><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>11 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>18 aut.</sZ><sZ>19 aut.</sZ><sZ>20 aut.</sZ><sZ>23 aut.</sZ><sZ>25 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>92195 Meudon</wicri:noRegion><wicri:noRegion>Obs. de Paris</wicri:noRegion><wicri:noRegion>92195 Meudon</wicri:noRegion><orgName type="university">Université Pierre-et-Marie-Curie</orgName><placeName><settlement type="city">Paris</settlement><region type="region" nuts="2">Île-de-France</region></placeName></affiliation><affiliation wicri:level="4"><inist:fA14 i1="10"><s1>Sydney Institute for Astronomy, School of Physics, The University of Sydney</s1><s2>NSW 2006</s2><s3>AUS</s3><sZ>18 aut.</sZ></inist:fA14><country>Australie</country><placeName><settlement type="city">Sydney</settlement><region type="état">Nouvelle-Galles du Sud</region></placeName><orgName type="university">Université de Sydney</orgName></affiliation></author><author><name sortKey="Catala, C" sort="Catala, C" uniqKey="Catala C" first="C." last="Catala">C. Catala</name><affiliation wicri:level="4"><inist:fA14 i1="04"><s1>LESIA, UMR8109, Université Pierre et Marie Curie, Université Denis Diderot, Obs. de Paris</s1><s2>92195 Meudon</s2><s3>FRA</s3><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>11 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>18 aut.</sZ><sZ>19 aut.</sZ><sZ>20 aut.</sZ><sZ>23 aut.</sZ><sZ>25 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Meudon</settlement><settlement type="city">Paris</settlement></placeName><orgName type="university">Université Pierre-et-Marie-Curie</orgName></affiliation></author><author><name sortKey="Deheuvels, S" sort="Deheuvels, S" uniqKey="Deheuvels S" first="S." last="Deheuvels">S. Deheuvels</name><affiliation wicri:level="4"><inist:fA14 i1="04"><s1>LESIA, UMR8109, Université Pierre et Marie Curie, Université Denis Diderot, Obs. de Paris</s1><s2>92195 Meudon</s2><s3>FRA</s3><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>11 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>18 aut.</sZ><sZ>19 aut.</sZ><sZ>20 aut.</sZ><sZ>23 aut.</sZ><sZ>25 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>92195 Meudon</wicri:noRegion><wicri:noRegion>Obs. de Paris</wicri:noRegion><wicri:noRegion>92195 Meudon</wicri:noRegion><orgName type="university">Université Pierre-et-Marie-Curie</orgName><placeName><settlement type="city">Paris</settlement><region type="region" nuts="2">Île-de-France</region></placeName></affiliation></author><author><name sortKey="Elsworth, Y" sort="Elsworth, Y" uniqKey="Elsworth Y" first="Y." last="Elsworth">Y. Elsworth</name><affiliation wicri:level="4"><inist:fA14 i1="07"><s1>School of Physics and Astronomy, University of Birmingham</s1><s2>Edgbaston, Birmingham B 15 2TT</s2><s3>GBR</s3><sZ>7 aut.</sZ><sZ>12 aut.</sZ><sZ>21 aut.</sZ></inist:fA14><country>Royaume-Uni</country><placeName><settlement type="city">Birmingham</settlement><region type="country">Angleterre</region><region type="région" nuts="1">Midlands de l'Ouest</region></placeName><orgName type="university">Université de Birmingham</orgName></affiliation></author><author><name sortKey="Jimenez Reyes, S J" sort="Jimenez Reyes, S J" uniqKey="Jimenez Reyes S" first="S. J." last="Jimenez-Reyes">S. J. Jimenez-Reyes</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Instituto de Astrofísica de Canarias</s1><s2>38205 La Laguna, Tenerife</s2><s3>ESP</s3><sZ>2 aut.</sZ><sZ>22 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ></inist:fA14><country>Espagne</country><wicri:noRegion>Instituto de Astrofísica de Canarias</wicri:noRegion></affiliation></author><author><name sortKey="Michel, E" sort="Michel, E" uniqKey="Michel E" first="E." last="Michel">E. Michel</name><affiliation wicri:level="4"><inist:fA14 i1="04"><s1>LESIA, UMR8109, Université Pierre et Marie Curie, Université Denis Diderot, Obs. de Paris</s1><s2>92195 Meudon</s2><s3>FRA</s3><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>11 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>18 aut.</sZ><sZ>19 aut.</sZ><sZ>20 aut.</sZ><sZ>23 aut.</sZ><sZ>25 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>92195 Meudon</wicri:noRegion><wicri:noRegion>Obs. de Paris</wicri:noRegion><wicri:noRegion>92195 Meudon</wicri:noRegion><orgName type="university">Université Pierre-et-Marie-Curie</orgName><placeName><settlement type="city">Paris</settlement><region type="region" nuts="2">Île-de-France</region></placeName></affiliation></author><author><name sortKey="Perez Hernandez, F" sort="Perez Hernandez, F" uniqKey="Perez Hernandez F" first="F." last="Perez Hernandez">F. Perez Hernandez</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Instituto de Astrofísica de Canarias</s1><s2>38205 La Laguna, Tenerife</s2><s3>ESP</s3><sZ>2 aut.</sZ><sZ>22 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ></inist:fA14><country>Espagne</country><wicri:noRegion>Instituto de Astrofísica de Canarias</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Universidad de La Laguna</s1><s2>38206 La Laguna, Tenerife</s2><s3>ESP</s3><sZ>2 aut.</sZ><sZ>24 aut.</sZ></inist:fA14><country>Espagne</country><wicri:noRegion>Universidad de La Laguna</wicri:noRegion></affiliation></author><author><name sortKey="Roxburgh, I W" sort="Roxburgh, I W" uniqKey="Roxburgh I" first="I. W." last="Roxburgh">I. W. Roxburgh</name><affiliation wicri:level="4"><inist:fA14 i1="04"><s1>LESIA, UMR8109, Université Pierre et Marie Curie, Université Denis Diderot, Obs. de Paris</s1><s2>92195 Meudon</s2><s3>FRA</s3><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>11 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ><sZ>18 aut.</sZ><sZ>19 aut.</sZ><sZ>20 aut.</sZ><sZ>23 aut.</sZ><sZ>25 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>92195 Meudon</wicri:noRegion><wicri:noRegion>Obs. de Paris</wicri:noRegion><wicri:noRegion>92195 Meudon</wicri:noRegion><orgName type="university">Université Pierre-et-Marie-Curie</orgName><placeName><settlement type="city">Paris</settlement><region type="region" nuts="2">Île-de-France</region></placeName></affiliation><affiliation wicri:level="1"><inist:fA14 i1="09"><s1>Astronomy Unit, Queen Mary, University of London Mile End Road</s1><s2>London E1 4NS</s2><s3>GBR</s3><sZ>13 aut.</sZ><sZ>25 aut.</sZ></inist:fA14><country>Royaume-Uni</country><wicri:noRegion>London E1 4NS</wicri:noRegion></affiliation></author><author><name sortKey="Salabert, D" sort="Salabert, D" uniqKey="Salabert D" first="D." last="Salabert">D. Salabert</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Instituto de Astrofísica de Canarias</s1><s2>38205 La Laguna, Tenerife</s2><s3>ESP</s3><sZ>2 aut.</sZ><sZ>22 aut.</sZ><sZ>24 aut.</sZ><sZ>26 aut.</sZ></inist:fA14><country>Espagne</country><wicri:noRegion>Instituto de Astrofísica de Canarias</wicri:noRegion></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="2009">2009</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>Autocorrelations</term><term>CoRot satellite</term><term>Differential rotation</term><term>Effective temperature</term><term>Galactic centers</term><term>Light curves</term><term>Power spectra</term><term>Rotation speed</term><term>Solar spectra</term><term>Wavelet transforms</term><term>p mode</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Température effective</term><term>Centre galactique</term><term>Spectre solaire</term><term>Mode p</term><term>Spectre puissance</term><term>Courbe lumière</term><term>Transformation ondelette</term><term>Vitesse rotation</term><term>Autocorrélation</term><term>Rotation différentielle</term><term>Satellite CoRot</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Context. The F8 star HD 181906 (effective temperature ∼6300 K) was observed for 156 days by the CoRoT satellite during the first long run in the direction of the galactic centre. Analysis of the data reveals a spectrum of solar-like acoustic oscillations. However, the faintness of the target (m<sub>v</sub> = 7.65) means the signal-to-noise (S/N) in the acoustic modes is quite low, and this low S/N leads to complications in the analysis. Aims. We extract global variables of the star, as well as key parameters of the p modes observed in the power spectrum of the lightcurve. Methods. The power spectrum of the lightcurve, a wavelet transform and spot fitting were used to obtain the average rotation rate of the star and its inclination angle. Then, the autocorrelation of the power spectrum and the power spectrum of the power spectrum were used to properly determine the large separation. Finally, estimations of the mode parameters were done by maximizing the likelihood of a global fit, where several modes were fit simultaneously. Results. We have been able to infer the mean surface rotation rate of the star (∼4 μHz) with indications of the presence of surface differential rotation, the large separation of the p modes (∼87 μHz), hence also the "ridges" corresponding to overtones of the acoustic modes.</div></front></TEI><affiliations><list><country><li>Australie</li><li>Espagne</li><li>France</li><li>Inde</li><li>Royaume-Uni</li></country><region><li>Angleterre</li><li>Midi-Pyrénées</li><li>Midlands de l'Ouest</li><li>Nouvelle-Galles du Sud</li><li>Occitanie (région administrative)</li><li>Île-de-France</li></region><settlement><li>Birmingham</li><li>Gif-sur-Yvette</li><li>Meudon</li><li>Orsay</li><li>Paris</li><li>Sydney</li><li>Toulouse</li></settlement><orgName><li>Université Paris-Sud</li><li>Université Pierre-et-Marie-Curie</li><li>Université de Birmingham</li><li>Université de Sydney</li></orgName></list><tree><country name="France"><region name="Île-de-France"><name sortKey="Garcia, R A" sort="Garcia, R A" uniqKey="Garcia R" first="R. A." last="Garcia">R. A. Garcia</name></region><name sortKey="Appourchaux, T" sort="Appourchaux, T" uniqKey="Appourchaux T" first="T." last="Appourchaux">T. Appourchaux</name><name sortKey="Auvergne, M" sort="Auvergne, M" uniqKey="Auvergne M" first="M." last="Auvergne">M. Auvergne</name><name sortKey="Baglin, A" sort="Baglin, A" uniqKey="Baglin A" first="A." last="Baglin">A. Baglin</name><name sortKey="Ballot, J" sort="Ballot, J" uniqKey="Ballot J" first="J." last="Ballot">J. Ballot</name><name sortKey="Barban, C" sort="Barban, C" uniqKey="Barban C" first="C." last="Barban">C. Barban</name><name sortKey="Baudin, F" sort="Baudin, F" uniqKey="Baudin F" first="F." last="Baudin">F. Baudin</name><name sortKey="Benomar, O" sort="Benomar, O" uniqKey="Benomar O" first="O." last="Benomar">O. Benomar</name><name sortKey="Boumier, P" sort="Boumier, P" uniqKey="Boumier P" first="P." last="Boumier">P. Boumier</name><name sortKey="Bruntt, H" sort="Bruntt, H" uniqKey="Bruntt H" first="H." last="Bruntt">H. Bruntt</name><name sortKey="Catala, C" sort="Catala, C" uniqKey="Catala C" first="C." last="Catala">C. Catala</name><name sortKey="Deheuvels, S" sort="Deheuvels, S" uniqKey="Deheuvels S" first="S." last="Deheuvels">S. Deheuvels</name><name sortKey="Gaulme, P" sort="Gaulme, P" uniqKey="Gaulme P" first="P." last="Gaulme">P. Gaulme</name><name sortKey="Michel, E" sort="Michel, E" uniqKey="Michel E" first="E." last="Michel">E. Michel</name><name sortKey="Mosser, B" sort="Mosser, B" uniqKey="Mosser B" first="B." last="Mosser">B. Mosser</name><name sortKey="Roxburgh, I W" sort="Roxburgh, I W" uniqKey="Roxburgh I" first="I. W." last="Roxburgh">I. W. Roxburgh</name><name sortKey="Samadi, R" sort="Samadi, R" uniqKey="Samadi R" first="R." last="Samadi">R. Samadi</name></country><country name="Espagne"><noRegion><name sortKey="Regulo, C" sort="Regulo, C" uniqKey="Regulo C" first="C." last="Regulo">C. Regulo</name></noRegion><name sortKey="Jimenez Reyes, S J" sort="Jimenez Reyes, S J" uniqKey="Jimenez Reyes S" first="S. J." last="Jimenez-Reyes">S. J. Jimenez-Reyes</name><name sortKey="Perez Hernandez, F" sort="Perez Hernandez, F" uniqKey="Perez Hernandez F" first="F." last="Perez Hernandez">F. Perez Hernandez</name><name sortKey="Perez Hernandez, F" sort="Perez Hernandez, F" uniqKey="Perez Hernandez F" first="F." last="Perez Hernandez">F. Perez Hernandez</name><name sortKey="Regulo, C" sort="Regulo, C" uniqKey="Regulo C" first="C." last="Regulo">C. Regulo</name><name sortKey="Salabert, D" sort="Salabert, D" uniqKey="Salabert D" first="D." last="Salabert">D. Salabert</name></country><country name="Royaume-Uni"><region name="Angleterre"><name sortKey="Chaplin, W J" sort="Chaplin, W J" uniqKey="Chaplin W" first="W. J." last="Chaplin">W. J. Chaplin</name></region><name sortKey="Elsworth, Y" sort="Elsworth, Y" uniqKey="Elsworth Y" first="Y." last="Elsworth">Y. Elsworth</name><name sortKey="Roxburgh, I W" sort="Roxburgh, I W" uniqKey="Roxburgh I" first="I. W." last="Roxburgh">I. W. Roxburgh</name><name sortKey="Toutain, T" sort="Toutain, T" uniqKey="Toutain T" first="T." last="Toutain">T. Toutain</name><name sortKey="Verner, G A" sort="Verner, G A" uniqKey="Verner G" first="G. A." last="Verner">G. A. Verner</name></country><country name="Inde"><noRegion><name sortKey="Mathur, S" sort="Mathur, S" uniqKey="Mathur S" first="S." last="Mathur">S. Mathur</name></noRegion></country><country name="Australie"><region name="Nouvelle-Galles du Sud"><name sortKey="Bruntt, H" sort="Bruntt, H" uniqKey="Bruntt H" first="H." last="Bruntt">H. Bruntt</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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