Oscillation mode linewidths of main-sequence and subgiant stars observed by Kepler
Identifieur interne : 005A22 ( Main/Exploration ); précédent : 005A21; suivant : 005A23Oscillation mode linewidths of main-sequence and subgiant stars observed by Kepler
Auteurs : T. Appourchaux [France, États-Unis] ; O. Benomar [Australie] ; M. Gruberbauer [Canada] ; W. J. Chaplin [Royaume-Uni] ; R. A. Garcia [France] ; R. Handberg [Danemark] ; G. A. Verner [France] ; H. M. Antia [Inde] ; T. L. Campante [Danemark, Portugal] ; G. R. Davies [France] ; S. Deheuvels [États-Unis] ; S. Hekker [Royaume-Uni, Pays-Bas] ; R. Howe [Royaume-Uni] ; D. Salabert [France] ; T. R. Bedding [Australie] ; T. R. White [Australie] ; G. Houdek [Autriche] ; V. Silva Aguirre [Allemagne] ; Y. P. Elsworth [Royaume-Uni] ; J. Van Cleve [États-Unis] ; B. D. Clarke [États-Unis] ; J. R. Hall [États-Unis] ; H. Kjeldsen [Danemark]Source :
- Astronomy and astrophysics : (Berlin. Print) [ 0004-6361 ] ; 2012.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
Context. Solar-like oscillations have been observed by Kepler and CoRoT in several solar-type stars. Aims. We study the variations in the stellar p-mode linewidth as a function of effective temperature. Methods. We study a time series of nine months of Kepler data. We analyse the power spectra of 42 cool main-sequence stars and subgiants using both maximum likelihood estimators and Bayesian estimators to recover individual mode characteristics such as frequencies, linewidths, and mode heights. Results. We report on the mode linewidth at both maximum power and maximum mode height for these 42 stars as a function of effective temperature. Conclusions. We show that the mode linewidth at either maximum mode height or maximum amplitude follows a scaling relation with effective temperature, which is a combination of a power law and a lower bound. The typical power-law index is about 13 for the linewidth derived from the maximum mode height, and about 16 for the linewidth derived from the maximum amplitude, while the lower bound is about 0.3 μHz and 0.7 μHz, respectively. We stress that this scaling relation is only valid for cool main-sequence stars and subgiants, and does not have any predictive power outside the temperature range of these stars.
Affiliations:
- Allemagne, Australie, Autriche, Canada, Danemark, France, Inde, Pays-Bas, Portugal, Royaume-Uni, États-Unis
- Angleterre, Hollande-Septentrionale, Midlands de l'Ouest, Nouvelle-Galles du Sud, Provence-Alpes-Côte d'Azur, Vienne (Autriche), Île-de-France
- Amsterdam, Birmingham, Gif-sur-Yvette, Nice, Orsay, Sydney, Vienne (Autriche)
- Université Paris-Sud, Université d'Amsterdam, Université de Birmingham, Université de Sydney
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Campante</name><affiliation wicri:level="1"><inist:fA14 i1="07"><s1>Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, 8 Aarhus C</s1><s3>DNK</s3><sZ>6 aut.</sZ><sZ>9 aut.</sZ><sZ>23 aut.</sZ></inist:fA14><country>Danemark</country><wicri:noRegion>Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, 8 Aarhus C</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="09"><s1>Centro de Astrofísica, DFA-Faculdade de Ciencias, Universidade do Porto, Rua das Estrelas</s1><s2>4150-762 Porto</s2><s3>PRT</s3><sZ>9 aut.</sZ></inist:fA14><country>Portugal</country><wicri:noRegion>4150-762 Porto</wicri:noRegion></affiliation></author><author><name sortKey="Davies, G R" sort="Davies, G R" uniqKey="Davies G" first="G. R." last="Davies">G. R. Davies</name><affiliation wicri:level="1"><inist:fA14 i1="06"><s1>Laboratoire AIM, CEAjDSM-CNRS-Université Paris Diderot, IRFU/SAp, Centre de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>5 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>91191 Gif-sur-Yvette</wicri:noRegion><wicri:noRegion>Centre de Saclay</wicri:noRegion><wicri:noRegion>91191 Gif-sur-Yvette</wicri:noRegion></affiliation></author><author><name sortKey="Deheuvels, S" sort="Deheuvels, S" uniqKey="Deheuvels S" first="S." last="Deheuvels">S. Deheuvels</name><affiliation wicri:level="1"><inist:fA14 i1="10"><s1>Department of Astronomy, Yale University, PO Box 208101</s1><s2>New Haven CT 06520-8101</s2><s3>USA</s3><sZ>11 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>New Haven CT 06520-8101</wicri:noRegion></affiliation></author><author><name sortKey="Hekker, S" sort="Hekker, S" uniqKey="Hekker S" first="S." last="Hekker">S. Hekker</name><affiliation wicri:level="4"><inist:fA14 i1="05"><s1>School of Physics and Astronomy, University of Birmingham</s1><s2>Edgbaston, Birmingham B 15 2TT</s2><s3>GBR</s3><sZ>4 aut.</sZ><sZ>12 aut.</sZ><sZ>13 aut.</sZ><sZ>19 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><affiliation wicri:level="4"><inist:fA14 i1="11"><s1>Astronomical Institute "Anton Pannekoek", University of Amsterdam, Science Park 904</s1><s2>1098 XH Amsterdam</s2><s3>NLD</s3><sZ>12 aut.</sZ></inist:fA14><country>Pays-Bas</country><wicri:noRegion>1098 XH Amsterdam</wicri:noRegion><orgName type="university">Université d'Amsterdam</orgName><placeName><settlement type="city">Amsterdam</settlement><region>Hollande-Septentrionale</region></placeName></affiliation></author><author><name sortKey="Howe, R" sort="Howe, R" uniqKey="Howe R" first="R." last="Howe">R. Howe</name><affiliation wicri:level="4"><inist:fA14 i1="05"><s1>School of Physics and Astronomy, University of Birmingham</s1><s2>Edgbaston, Birmingham B 15 2TT</s2><s3>GBR</s3><sZ>4 aut.</sZ><sZ>12 aut.</sZ><sZ>13 aut.</sZ><sZ>19 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="Salabert, D" sort="Salabert, D" uniqKey="Salabert D" first="D." last="Salabert">D. Salabert</name><affiliation wicri:level="3"><inist:fA14 i1="12"><s1>Université de Nice Sophia-Antipolis, CNRS UMR 6202, Observatoire de la Côte d'Azur, BP 4229</s1><s2>06304 Nice</s2><s3>FRA</s3><sZ>14 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Provence-Alpes-Côte d'Azur</region><settlement type="city">Nice</settlement></placeName></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 wicri:level="4"><inist:fA14 i1="03"><s1>Sydney Institute for Astronomy (SIfA), School of Physics, University of Sydney</s1><s2>New South Wales 2006</s2><s3>AUS</s3><sZ>2 aut.</sZ><sZ>15 aut.</sZ><sZ>16 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="White, T R" sort="White, T R" uniqKey="White T" first="T. R." last="White">T. R. White</name><affiliation wicri:level="4"><inist:fA14 i1="03"><s1>Sydney Institute for Astronomy (SIfA), School of Physics, University of Sydney</s1><s2>New South Wales 2006</s2><s3>AUS</s3><sZ>2 aut.</sZ><sZ>15 aut.</sZ><sZ>16 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="Houdek, G" sort="Houdek, G" uniqKey="Houdek G" first="G." last="Houdek">G. Houdek</name><affiliation wicri:level="3"><inist:fA14 i1="13"><s1>Institute of Astronomy, University of Vienna</s1><s2>1180 Vienna</s2><s3>AUT</s3><sZ>17 aut.</sZ></inist:fA14><country>Autriche</country><placeName><region type="land" nuts="2">Vienne (Autriche)</region><settlement type="city">Vienne (Autriche)</settlement></placeName></affiliation></author><author><name sortKey="Silva Aguirre, V" sort="Silva Aguirre, V" uniqKey="Silva Aguirre V" first="V." last="Silva Aguirre">V. Silva Aguirre</name><affiliation wicri:level="1"><inist:fA14 i1="14"><s1>Max Planck Institute for Astrophysics, Karl-Schwarzschild-Str. 1</s1><s2>85748 Garching bei München</s2><s3>DEU</s3><sZ>18 aut.</sZ></inist:fA14><country>Allemagne</country><wicri:noRegion>85748 Garching bei München</wicri:noRegion><wicri:noRegion>Karl-Schwarzschild-Str. 1</wicri:noRegion><wicri:noRegion>85748 Garching bei München</wicri:noRegion></affiliation></author><author><name sortKey="Elsworth, Y P" sort="Elsworth, Y P" uniqKey="Elsworth Y" first="Y. P." last="Elsworth">Y. P. Elsworth</name><affiliation wicri:level="4"><inist:fA14 i1="05"><s1>School of Physics and Astronomy, University of Birmingham</s1><s2>Edgbaston, Birmingham B 15 2TT</s2><s3>GBR</s3><sZ>4 aut.</sZ><sZ>12 aut.</sZ><sZ>13 aut.</sZ><sZ>19 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="Van Cleve, J" sort="Van Cleve, J" uniqKey="Van Cleve J" first="J." last="Van Cleve">J. Van Cleve</name><affiliation wicri:level="1"><inist:fA14 i1="15"><s1>SETI Institute/NASA Ames Research Center</s1><s2>Moffett Field, CA 94035</s2><s3>USA</s3><sZ>20 aut.</sZ><sZ>21 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>SETI Institute/NASA Ames Research Center</wicri:noRegion></affiliation></author><author><name sortKey="Clarke, B D" sort="Clarke, B D" uniqKey="Clarke B" first="B. D." last="Clarke">B. D. Clarke</name><affiliation wicri:level="1"><inist:fA14 i1="15"><s1>SETI Institute/NASA Ames Research Center</s1><s2>Moffett Field, CA 94035</s2><s3>USA</s3><sZ>20 aut.</sZ><sZ>21 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>SETI Institute/NASA Ames Research Center</wicri:noRegion></affiliation></author><author><name sortKey="Hall, J R" sort="Hall, J R" uniqKey="Hall J" first="J. R." last="Hall">J. R. Hall</name><affiliation wicri:level="1"><inist:fA14 i1="16"><s1>Orbital Sciences Corporation/NASA Ames Research Center</s1><s2>Moffett Field, CA 94035</s2><s3>USA</s3><sZ>22 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Orbital Sciences Corporation/NASA Ames Research Center</wicri:noRegion></affiliation></author><author><name sortKey="Kjeldsen, H" sort="Kjeldsen, H" uniqKey="Kjeldsen H" first="H." last="Kjeldsen">H. Kjeldsen</name><affiliation wicri:level="1"><inist:fA14 i1="07"><s1>Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, 8 Aarhus C</s1><s3>DNK</s3><sZ>6 aut.</sZ><sZ>9 aut.</sZ><sZ>23 aut.</sZ></inist:fA14><country>Danemark</country><wicri:noRegion>Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, 8 Aarhus C</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">12-0171538</idno><date when="2012">2012</date><idno type="stanalyst">PASCAL 12-0171538 INIST</idno><idno type="RBID">Pascal:12-0171538</idno><idno type="wicri:Area/PascalFrancis/Corpus">001484</idno><idno type="wicri:Area/PascalFrancis/Curation">004A28</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">000E81</idno><idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">000E81</idno><idno type="wicri:doubleKey">0004-6361:2012:Appourchaux T:oscillation:mode:linewidths</idno><idno type="wicri:Area/Main/Merge">005D16</idno><idno type="wicri:Area/Main/Curation">005A22</idno><idno type="wicri:Area/Main/Exploration">005A22</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Oscillation mode linewidths of main-sequence and subgiant stars observed by Kepler</title><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="01"><s1>Université Paris-Sud, Institut d'Astrophysique Spatiale, UMR8617, CNRS, Bâtiment 121</s1><s2>91405 Orsay</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">Orsay</settlement><settlement type="city">Orsay</settlement></placeName><orgName type="university">Université Paris-Sud</orgName></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Kavli Institute for Theoretical Physics, University of California</s1><s2>Santa Barbara, CA 93106-4030</s2><s3>USA</s3><sZ>1 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Santa Barbara, CA 93106-4030</wicri:noRegion></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="03"><s1>Sydney Institute for Astronomy (SIfA), School of Physics, University of Sydney</s1><s2>New South Wales 2006</s2><s3>AUS</s3><sZ>2 aut.</sZ><sZ>15 aut.</sZ><sZ>16 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="Gruberbauer, M" sort="Gruberbauer, M" uniqKey="Gruberbauer M" first="M." last="Gruberbauer">M. Gruberbauer</name><affiliation wicri:level="1"><inist:fA14 i1="04"><s1>Department of Astronomy & Physics, Saint Mary's University</s1><s2>Halifax, NS B3H 3C3</s2><s3>CAN</s3><sZ>3 aut.</sZ></inist:fA14><country>Canada</country><wicri:noRegion>Halifax, NS B3H 3C3</wicri:noRegion></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="05"><s1>School of Physics and Astronomy, University of Birmingham</s1><s2>Edgbaston, Birmingham B 15 2TT</s2><s3>GBR</s3><sZ>4 aut.</sZ><sZ>12 aut.</sZ><sZ>13 aut.</sZ><sZ>19 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="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="06"><s1>Laboratoire AIM, CEAjDSM-CNRS-Université Paris Diderot, IRFU/SAp, Centre de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>5 aut.</sZ><sZ>7 aut.</sZ><sZ>10 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="Handberg, R" sort="Handberg, R" uniqKey="Handberg R" first="R." last="Handberg">R. Handberg</name><affiliation wicri:level="1"><inist:fA14 i1="07"><s1>Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, 8 Aarhus C</s1><s3>DNK</s3><sZ>6 aut.</sZ><sZ>9 aut.</sZ><sZ>23 aut.</sZ></inist:fA14><country>Danemark</country><wicri:noRegion>Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, 8 Aarhus C</wicri:noRegion></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="06"><s1>Laboratoire AIM, CEAjDSM-CNRS-Université Paris Diderot, IRFU/SAp, Centre de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>5 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>91191 Gif-sur-Yvette</wicri:noRegion><wicri:noRegion>Centre de Saclay</wicri:noRegion><wicri:noRegion>91191 Gif-sur-Yvette</wicri:noRegion></affiliation></author><author><name sortKey="Antia, H M" sort="Antia, H M" uniqKey="Antia H" first="H. M." last="Antia">H. M. Antia</name><affiliation wicri:level="1"><inist:fA14 i1="08"><s1>Tata Institute of Fundamental Research, Homi Bhabha Road</s1><s2>Mumbai</s2><s3>IND</s3><sZ>8 aut.</sZ></inist:fA14><country>Inde</country><wicri:noRegion>Mumbai</wicri:noRegion></affiliation></author><author><name sortKey="Campante, T L" sort="Campante, T L" uniqKey="Campante T" first="T. L." last="Campante">T. L. Campante</name><affiliation wicri:level="1"><inist:fA14 i1="07"><s1>Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, 8 Aarhus C</s1><s3>DNK</s3><sZ>6 aut.</sZ><sZ>9 aut.</sZ><sZ>23 aut.</sZ></inist:fA14><country>Danemark</country><wicri:noRegion>Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, 8 Aarhus C</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="09"><s1>Centro de Astrofísica, DFA-Faculdade de Ciencias, Universidade do Porto, Rua das Estrelas</s1><s2>4150-762 Porto</s2><s3>PRT</s3><sZ>9 aut.</sZ></inist:fA14><country>Portugal</country><wicri:noRegion>4150-762 Porto</wicri:noRegion></affiliation></author><author><name sortKey="Davies, G R" sort="Davies, G R" uniqKey="Davies G" first="G. R." last="Davies">G. R. Davies</name><affiliation wicri:level="1"><inist:fA14 i1="06"><s1>Laboratoire AIM, CEAjDSM-CNRS-Université Paris Diderot, IRFU/SAp, Centre de Saclay</s1><s2>91191 Gif-sur-Yvette</s2><s3>FRA</s3><sZ>5 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>91191 Gif-sur-Yvette</wicri:noRegion><wicri:noRegion>Centre de Saclay</wicri:noRegion><wicri:noRegion>91191 Gif-sur-Yvette</wicri:noRegion></affiliation></author><author><name sortKey="Deheuvels, S" sort="Deheuvels, S" uniqKey="Deheuvels S" first="S." last="Deheuvels">S. Deheuvels</name><affiliation wicri:level="1"><inist:fA14 i1="10"><s1>Department of Astronomy, Yale University, PO Box 208101</s1><s2>New Haven CT 06520-8101</s2><s3>USA</s3><sZ>11 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>New Haven CT 06520-8101</wicri:noRegion></affiliation></author><author><name sortKey="Hekker, S" sort="Hekker, S" uniqKey="Hekker S" first="S." last="Hekker">S. Hekker</name><affiliation wicri:level="4"><inist:fA14 i1="05"><s1>School of Physics and Astronomy, University of Birmingham</s1><s2>Edgbaston, Birmingham B 15 2TT</s2><s3>GBR</s3><sZ>4 aut.</sZ><sZ>12 aut.</sZ><sZ>13 aut.</sZ><sZ>19 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><affiliation wicri:level="4"><inist:fA14 i1="11"><s1>Astronomical Institute "Anton Pannekoek", University of Amsterdam, Science Park 904</s1><s2>1098 XH Amsterdam</s2><s3>NLD</s3><sZ>12 aut.</sZ></inist:fA14><country>Pays-Bas</country><wicri:noRegion>1098 XH Amsterdam</wicri:noRegion><orgName type="university">Université d'Amsterdam</orgName><placeName><settlement type="city">Amsterdam</settlement><region>Hollande-Septentrionale</region></placeName></affiliation></author><author><name sortKey="Howe, R" sort="Howe, R" uniqKey="Howe R" first="R." last="Howe">R. Howe</name><affiliation wicri:level="4"><inist:fA14 i1="05"><s1>School of Physics and Astronomy, University of Birmingham</s1><s2>Edgbaston, Birmingham B 15 2TT</s2><s3>GBR</s3><sZ>4 aut.</sZ><sZ>12 aut.</sZ><sZ>13 aut.</sZ><sZ>19 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="Salabert, D" sort="Salabert, D" uniqKey="Salabert D" first="D." last="Salabert">D. Salabert</name><affiliation wicri:level="3"><inist:fA14 i1="12"><s1>Université de Nice Sophia-Antipolis, CNRS UMR 6202, Observatoire de la Côte d'Azur, BP 4229</s1><s2>06304 Nice</s2><s3>FRA</s3><sZ>14 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Provence-Alpes-Côte d'Azur</region><settlement type="city">Nice</settlement></placeName></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 wicri:level="4"><inist:fA14 i1="03"><s1>Sydney Institute for Astronomy (SIfA), School of Physics, University of Sydney</s1><s2>New South Wales 2006</s2><s3>AUS</s3><sZ>2 aut.</sZ><sZ>15 aut.</sZ><sZ>16 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="White, T R" sort="White, T R" uniqKey="White T" first="T. R." last="White">T. R. White</name><affiliation wicri:level="4"><inist:fA14 i1="03"><s1>Sydney Institute for Astronomy (SIfA), School of Physics, University of Sydney</s1><s2>New South Wales 2006</s2><s3>AUS</s3><sZ>2 aut.</sZ><sZ>15 aut.</sZ><sZ>16 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="Houdek, G" sort="Houdek, G" uniqKey="Houdek G" first="G." last="Houdek">G. Houdek</name><affiliation wicri:level="3"><inist:fA14 i1="13"><s1>Institute of Astronomy, University of Vienna</s1><s2>1180 Vienna</s2><s3>AUT</s3><sZ>17 aut.</sZ></inist:fA14><country>Autriche</country><placeName><region type="land" nuts="2">Vienne (Autriche)</region><settlement type="city">Vienne (Autriche)</settlement></placeName></affiliation></author><author><name sortKey="Silva Aguirre, V" sort="Silva Aguirre, V" uniqKey="Silva Aguirre V" first="V." last="Silva Aguirre">V. Silva Aguirre</name><affiliation wicri:level="1"><inist:fA14 i1="14"><s1>Max Planck Institute for Astrophysics, Karl-Schwarzschild-Str. 1</s1><s2>85748 Garching bei München</s2><s3>DEU</s3><sZ>18 aut.</sZ></inist:fA14><country>Allemagne</country><wicri:noRegion>85748 Garching bei München</wicri:noRegion><wicri:noRegion>Karl-Schwarzschild-Str. 1</wicri:noRegion><wicri:noRegion>85748 Garching bei München</wicri:noRegion></affiliation></author><author><name sortKey="Elsworth, Y P" sort="Elsworth, Y P" uniqKey="Elsworth Y" first="Y. P." last="Elsworth">Y. P. Elsworth</name><affiliation wicri:level="4"><inist:fA14 i1="05"><s1>School of Physics and Astronomy, University of Birmingham</s1><s2>Edgbaston, Birmingham B 15 2TT</s2><s3>GBR</s3><sZ>4 aut.</sZ><sZ>12 aut.</sZ><sZ>13 aut.</sZ><sZ>19 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="Van Cleve, J" sort="Van Cleve, J" uniqKey="Van Cleve J" first="J." last="Van Cleve">J. Van Cleve</name><affiliation wicri:level="1"><inist:fA14 i1="15"><s1>SETI Institute/NASA Ames Research Center</s1><s2>Moffett Field, CA 94035</s2><s3>USA</s3><sZ>20 aut.</sZ><sZ>21 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>SETI Institute/NASA Ames Research Center</wicri:noRegion></affiliation></author><author><name sortKey="Clarke, B D" sort="Clarke, B D" uniqKey="Clarke B" first="B. D." last="Clarke">B. D. Clarke</name><affiliation wicri:level="1"><inist:fA14 i1="15"><s1>SETI Institute/NASA Ames Research Center</s1><s2>Moffett Field, CA 94035</s2><s3>USA</s3><sZ>20 aut.</sZ><sZ>21 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>SETI Institute/NASA Ames Research Center</wicri:noRegion></affiliation></author><author><name sortKey="Hall, J R" sort="Hall, J R" uniqKey="Hall J" first="J. R." last="Hall">J. R. Hall</name><affiliation wicri:level="1"><inist:fA14 i1="16"><s1>Orbital Sciences Corporation/NASA Ames Research Center</s1><s2>Moffett Field, CA 94035</s2><s3>USA</s3><sZ>22 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Orbital Sciences Corporation/NASA Ames Research Center</wicri:noRegion></affiliation></author><author><name sortKey="Kjeldsen, H" sort="Kjeldsen, H" uniqKey="Kjeldsen H" first="H." last="Kjeldsen">H. Kjeldsen</name><affiliation wicri:level="1"><inist:fA14 i1="07"><s1>Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, 8 Aarhus C</s1><s3>DNK</s3><sZ>6 aut.</sZ><sZ>9 aut.</sZ><sZ>23 aut.</sZ></inist:fA14><country>Danemark</country><wicri:noRegion>Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, 8 Aarhus C</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="2012">2012</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>Astroseismology</term><term>Cool star</term><term>Data analysis</term><term>Effective temperature</term><term>Estimator</term><term>Lower bound</term><term>Main sequence stars</term><term>Maximum likelihood</term><term>Oscillation modes</term><term>Power law</term><term>Power spectra</term><term>Solar type star</term><term>Subgiant star</term><term>Time series</term><term>p mode</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Mode oscillation</term><term>Sous géante</term><term>Etoile type solaire</term><term>Mode p</term><term>Température effective</term><term>Série temporelle</term><term>Spectre puissance</term><term>Etoile froide</term><term>Etoile séquence principale</term><term>Maximum vraisemblance</term><term>Estimateur</term><term>Loi puissance</term><term>Borne inférieure</term><term>Analyse donnée</term><term>Astéroséismologie</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Context. Solar-like oscillations have been observed by Kepler and CoRoT in several solar-type stars. Aims. We study the variations in the stellar p-mode linewidth as a function of effective temperature. Methods. We study a time series of nine months of Kepler data. We analyse the power spectra of 42 cool main-sequence stars and subgiants using both maximum likelihood estimators and Bayesian estimators to recover individual mode characteristics such as frequencies, linewidths, and mode heights. Results. We report on the mode linewidth at both maximum power and maximum mode height for these 42 stars as a function of effective temperature. Conclusions. We show that the mode linewidth at either maximum mode height or maximum amplitude follows a scaling relation with effective temperature, which is a combination of a power law and a lower bound. The typical power-law index is about 13 for the linewidth derived from the maximum mode height, and about 16 for the linewidth derived from the maximum amplitude, while the lower bound is about 0.3 μHz and 0.7 μHz, respectively. We stress that this scaling relation is only valid for cool main-sequence stars and subgiants, and does not have any predictive power outside the temperature range of these stars.</div></front></TEI><affiliations><list><country><li>Allemagne</li><li>Australie</li><li>Autriche</li><li>Canada</li><li>Danemark</li><li>France</li><li>Inde</li><li>Pays-Bas</li><li>Portugal</li><li>Royaume-Uni</li><li>États-Unis</li></country><region><li>Angleterre</li><li>Hollande-Septentrionale</li><li>Midlands de l'Ouest</li><li>Nouvelle-Galles du Sud</li><li>Provence-Alpes-Côte d'Azur</li><li>Vienne (Autriche)</li><li>Île-de-France</li></region><settlement><li>Amsterdam</li><li>Birmingham</li><li>Gif-sur-Yvette</li><li>Nice</li><li>Orsay</li><li>Sydney</li><li>Vienne (Autriche)</li></settlement><orgName><li>Université Paris-Sud</li><li>Université d'Amsterdam</li><li>Université de Birmingham</li><li>Université de Sydney</li></orgName></list><tree><country name="France"><region name="Île-de-France"><name sortKey="Appourchaux, T" sort="Appourchaux, T" uniqKey="Appourchaux T" first="T." last="Appourchaux">T. Appourchaux</name></region><name sortKey="Davies, G R" sort="Davies, G R" uniqKey="Davies G" first="G. R." last="Davies">G. R. Davies</name><name sortKey="Garcia, R A" sort="Garcia, R A" uniqKey="Garcia R" first="R. A." last="Garcia">R. A. Garcia</name><name sortKey="Salabert, D" sort="Salabert, D" uniqKey="Salabert D" first="D." last="Salabert">D. Salabert</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="États-Unis"><noRegion><name sortKey="Appourchaux, T" sort="Appourchaux, T" uniqKey="Appourchaux T" first="T." last="Appourchaux">T. Appourchaux</name></noRegion><name sortKey="Clarke, B D" sort="Clarke, B D" uniqKey="Clarke B" first="B. D." last="Clarke">B. D. Clarke</name><name sortKey="Deheuvels, S" sort="Deheuvels, S" uniqKey="Deheuvels S" first="S." last="Deheuvels">S. Deheuvels</name><name sortKey="Hall, J R" sort="Hall, J R" uniqKey="Hall J" first="J. R." last="Hall">J. R. Hall</name><name sortKey="Van Cleve, J" sort="Van Cleve, J" uniqKey="Van Cleve J" first="J." last="Van Cleve">J. Van Cleve</name></country><country name="Australie"><region name="Nouvelle-Galles du Sud"><name sortKey="Benomar, O" sort="Benomar, O" uniqKey="Benomar O" first="O." last="Benomar">O. Benomar</name></region><name sortKey="Bedding, T R" sort="Bedding, T R" uniqKey="Bedding T" first="T. R." last="Bedding">T. R. Bedding</name><name sortKey="White, T R" sort="White, T R" uniqKey="White T" first="T. R." last="White">T. R. White</name></country><country name="Canada"><noRegion><name sortKey="Gruberbauer, M" sort="Gruberbauer, M" uniqKey="Gruberbauer M" first="M." last="Gruberbauer">M. Gruberbauer</name></noRegion></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 P" sort="Elsworth, Y P" uniqKey="Elsworth Y" first="Y. P." last="Elsworth">Y. P. Elsworth</name><name sortKey="Hekker, S" sort="Hekker, S" uniqKey="Hekker S" first="S." last="Hekker">S. Hekker</name><name sortKey="Howe, R" sort="Howe, R" uniqKey="Howe R" first="R." last="Howe">R. Howe</name></country><country name="Danemark"><noRegion><name sortKey="Handberg, R" sort="Handberg, R" uniqKey="Handberg R" first="R." last="Handberg">R. Handberg</name></noRegion><name sortKey="Campante, T L" sort="Campante, T L" uniqKey="Campante T" first="T. L." last="Campante">T. L. Campante</name><name sortKey="Kjeldsen, H" sort="Kjeldsen, H" uniqKey="Kjeldsen H" first="H." last="Kjeldsen">H. Kjeldsen</name></country><country name="Inde"><noRegion><name sortKey="Antia, H M" sort="Antia, H M" uniqKey="Antia H" first="H. M." last="Antia">H. M. Antia</name></noRegion></country><country name="Portugal"><noRegion><name sortKey="Campante, T L" sort="Campante, T L" uniqKey="Campante T" first="T. L." last="Campante">T. L. Campante</name></noRegion></country><country name="Pays-Bas"><region name="Hollande-Septentrionale"><name sortKey="Hekker, S" sort="Hekker, S" uniqKey="Hekker S" first="S." last="Hekker">S. Hekker</name></region></country><country name="Autriche"><region name="Vienne (Autriche)"><name sortKey="Houdek, G" sort="Houdek, G" uniqKey="Houdek G" first="G." last="Houdek">G. Houdek</name></region></country><country name="Allemagne"><noRegion><name sortKey="Silva Aguirre, V" sort="Silva Aguirre, V" uniqKey="Silva Aguirre V" first="V." last="Silva Aguirre">V. Silva Aguirre</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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