ASTEROSEISMOLOGY OF RED GIANTS FROM THE FIRST FOUR MONTHS OF KEPLER DATA: GLOBAL OSCILLATION PARAMETERS FOR 800 STARS
Identifieur interne : 007A68 ( Main/Exploration ); précédent : 007A67; suivant : 007A69ASTEROSEISMOLOGY OF RED GIANTS FROM THE FIRST FOUR MONTHS OF KEPLER DATA: GLOBAL OSCILLATION PARAMETERS FOR 800 STARS
Auteurs : D. Huber [Australie] ; T. R. Bedding [Australie] ; D. Stello [Australie] ; B. Mosser [France] ; S. Mathur [États-Unis] ; T. Kallinger [Canada, Autriche] ; S. Hekker [Royaume-Uni] ; Y. P. Elsworth [Royaume-Uni] ; D. L. Buzasi [États-Unis] ; J. De Ridder [Belgique] ; R. L. Gilliland [États-Unis] ; H. Kjeldseni [Danemark] ; W. J. Chaplin [Royaume-Uni] ; R. A. Garcia [France] ; S. J. Hale [Royaume-Uni] ; H. L. Preston [États-Unis, Afrique du Sud] ; T. R. White [Australie] ; W. J. Borucki [États-Unis] ; J. Christensen-Dalsgaard [Danemark] ; B. D. Clarke [États-Unis] ; J. M. Jenkins [États-Unis] ; D. Koch [États-Unis]Source :
- The Astrophysical journal [ 0004-637X ] ; 2010.
Descripteurs français
- Pascal (Inist)
English descriptors
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Abstract
We have studied solar-like oscillations in ˜800 red giant stars using Kepler long-cadence photometry. The sample includes stars ranging in evolution from the lower part of the red giant branch to the helium main sequence. We investigate the relation between the large frequency separation (Δν) and the frequency of maximum power (νmax) and show that it is different for red giants than for main-sequence stars, which is consistent with evolutionary models and scaling relations. The distributions of νmax and Δν are in qualitative agreement with a simple stellar population model of the Kepler field, including the first evidence for a secondary clump population characterized by M ? 2 M◦. and νmax ≃ 40-110 μHz. We measured the small frequency separations δν02 and δν01 in over 400 stars and δν03 in over 40. We present C-D diagrams for I = 1, 2, and 3 and show that the frequency separation ratios δν02/Δν and δν01/Δν have opposite trends as a function of Δν. The data show a narrowing of the l = 1 ridge toward lower νmax, in agreement with models predicting more efficient mode trapping in stars with higher luminosity. We investigate the offset ∈ in the asymptotic relation and find a clear correlation with Δν, demonstrating that it is related to fundamental stellar parameters. Finally, we present the first amplitude-νmax relation for Kepler red giants. We observe a lack of low-amplitude stars for νmax ? 110 μHz and find that, for a given νmax between 40 and 110 μHz, stars with lower Δν (and consequently higher mass) tend to show lower amplitudes than stars with higher Δν.
Affiliations:
- Afrique du Sud, Australie, Autriche, Belgique, Canada, Danemark, France, Royaume-Uni, États-Unis
- Angleterre, Midlands de l'Ouest, Nouvelle-Galles du Sud, Vienne (Autriche), Île-de-France
- Birmingham, Gif-sur-Yvette, Meudon, Paris, Sydney, Vienne (Autriche)
- Université Pierre-et-Marie-Curie, Université de Birmingham, Université de Sydney
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Bedding</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Sydney Institute for Astronomy (SIfA), School of Physics, University of Sydney</s1><s2>NSW 2006</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>17 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="Stello, D" sort="Stello, D" uniqKey="Stello D" first="D." last="Stello">D. Stello</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Sydney Institute for Astronomy (SIfA), School of Physics, University of Sydney</s1><s2>NSW 2006</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>17 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="Mosser, B" sort="Mosser, B" uniqKey="Mosser B" first="B." last="Mosser">B. Mosser</name><affiliation wicri:level="4"><inist:fA14 i1="02"><s1>LESIA, CNRS, Université Pierre et Marie Curie, Université Denis, Diderot, Observatoire de Paris</s1><s2>92195 Meudon</s2><s3>FRA</s3><sZ>4 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="Mathur, S" sort="Mathur, S" uniqKey="Mathur S" first="S." last="Mathur">S. Mathur</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>High Altitude Observatory, NCAR, P.O. BOX 3000</s1><s2>Boulder, CO 80307</s2><s3>USA</s3><sZ>5 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Boulder, CO 80307</wicri:noRegion></affiliation></author><author><name sortKey="Kallinger, T" sort="Kallinger, T" uniqKey="Kallinger T" first="T." last="Kallinger">T. Kallinger</name><affiliation wicri:level="1"><inist:fA14 i1="04"><s1>Department of Physics and Astronomy, University of British Columbia</s1><s2>Vancouver, BC</s2><s3>CAN</s3><sZ>6 aut.</sZ></inist:fA14><country>Canada</country><wicri:noRegion>Vancouver, BC</wicri:noRegion></affiliation><affiliation wicri:level="3"><inist:fA14 i1="05"><s1>Institute for Astronomy (IFA), University of Vienna</s1><s2>1180 Vienna</s2><s3>AUT</s3><sZ>6 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="Hekker, S" sort="Hekker, S" uniqKey="Hekker S" first="S." last="Hekker">S. Hekker</name><affiliation wicri:level="4"><inist:fA14 i1="06"><s1>School of Physics and Astronomy, University of Birmingham, Edgbaston</s1><s2>Birmingham B15 2TT</s2><s3>GBR</s3><sZ>7 aut.</sZ><sZ>8 aut.</sZ><sZ>13 aut.</sZ><sZ>15 aut.</sZ></inist:fA14><country>Royaume-Uni</country><wicri:noRegion>Birmingham B15 2TT</wicri:noRegion><orgName type="university">Université de Birmingham</orgName><placeName><settlement type="city">Birmingham</settlement><region type="country">Angleterre</region><region type="région" nuts="1">Midlands de l'Ouest</region></placeName></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="06"><s1>School of Physics and Astronomy, University of Birmingham, Edgbaston</s1><s2>Birmingham B15 2TT</s2><s3>GBR</s3><sZ>7 aut.</sZ><sZ>8 aut.</sZ><sZ>13 aut.</sZ><sZ>15 aut.</sZ></inist:fA14><country>Royaume-Uni</country><wicri:noRegion>Birmingham B15 2TT</wicri:noRegion><orgName type="university">Université de Birmingham</orgName><placeName><settlement type="city">Birmingham</settlement><region type="country">Angleterre</region><region type="région" nuts="1">Midlands de l'Ouest</region></placeName></affiliation></author><author><name sortKey="Buzasi, D L" sort="Buzasi, D L" uniqKey="Buzasi D" first="D. L." last="Buzasi">D. L. Buzasi</name><affiliation wicri:level="1"><inist:fA14 i1="07"><s1>Eureka Scientific, 2452 Delmer Street Suite 100</s1><s2>Oakland, CA 94602-3017</s2><s3>USA</s3><sZ>9 aut.</sZ><sZ>16 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Oakland, CA 94602-3017</wicri:noRegion></affiliation></author><author><name sortKey="De Ridder, J" sort="De Ridder, J" uniqKey="De Ridder J" first="J." last="De Ridder">J. De Ridder</name><affiliation wicri:level="1"><inist:fA14 i1="08"><s1>Instituut voor Sterrenkunde, K.U. Leuven</s1><s3>BEL</s3><sZ>10 aut.</sZ></inist:fA14><country>Belgique</country><wicri:noRegion>Instituut voor Sterrenkunde, K.U. Leuven</wicri:noRegion></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 wicri:level="1"><inist:fA14 i1="09"><s1>Space Telescope Science Institute, 3700 San Martin Drive</s1><s2>Baltimore, MD 21218</s2><s3>USA</s3><sZ>11 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Baltimore, MD 21218</wicri:noRegion></affiliation></author><author><name sortKey="Kjeldseni, H" sort="Kjeldseni, H" uniqKey="Kjeldseni H" first="H." last="Kjeldseni">H. Kjeldseni</name><affiliation wicri:level="1"><inist:fA14 i1="10"><s1>Danish AsteroSeismology Centre (DASC), Department of Physics and Astronomy, Aarhus University</s1><s2>8000 Aarhus</s2><s3>DNK</s3><sZ>12 aut.</sZ><sZ>19 aut.</sZ></inist:fA14><country>Danemark</country><wicri:noRegion>8000 Aarhus</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="06"><s1>School of Physics and Astronomy, University of Birmingham, Edgbaston</s1><s2>Birmingham B15 2TT</s2><s3>GBR</s3><sZ>7 aut.</sZ><sZ>8 aut.</sZ><sZ>13 aut.</sZ><sZ>15 aut.</sZ></inist:fA14><country>Royaume-Uni</country><wicri:noRegion>Birmingham B15 2TT</wicri:noRegion><orgName type="university">Université de Birmingham</orgName><placeName><settlement type="city">Birmingham</settlement><region type="country">Angleterre</region><region type="région" nuts="1">Midlands de l'Ouest</region></placeName></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="11"><s1>Laboratoire AIM, CEA/DSM-CNRS, Université Paris 7 Diderot, IRFU/SAp, Centre de Saclay</s1><s2>91191, Gif-sur-Yvette</s2><s3>FRA</s3><sZ>14 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="Hale, S J" sort="Hale, S J" uniqKey="Hale S" first="S. J." last="Hale">S. J. Hale</name><affiliation wicri:level="4"><inist:fA14 i1="06"><s1>School of Physics and Astronomy, University of Birmingham, Edgbaston</s1><s2>Birmingham B15 2TT</s2><s3>GBR</s3><sZ>7 aut.</sZ><sZ>8 aut.</sZ><sZ>13 aut.</sZ><sZ>15 aut.</sZ></inist:fA14><country>Royaume-Uni</country><wicri:noRegion>Birmingham B15 2TT</wicri:noRegion><orgName type="university">Université de Birmingham</orgName><placeName><settlement type="city">Birmingham</settlement><region type="country">Angleterre</region><region type="région" nuts="1">Midlands de l'Ouest</region></placeName></affiliation></author><author><name sortKey="Preston, H L" sort="Preston, H L" uniqKey="Preston H" first="H. L." last="Preston">H. L. Preston</name><affiliation wicri:level="1"><inist:fA14 i1="07"><s1>Eureka Scientific, 2452 Delmer Street Suite 100</s1><s2>Oakland, CA 94602-3017</s2><s3>USA</s3><sZ>9 aut.</sZ><sZ>16 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Oakland, CA 94602-3017</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="12"><s1>Department of Mathematical Sciences, University of South Africa, Box 392 UNISA 0003</s1><s3>ZAF</s3><sZ>16 aut.</sZ></inist:fA14><country>Afrique du Sud</country><wicri:noRegion>Department of Mathematical Sciences, University of South Africa, Box 392 UNISA 0003</wicri:noRegion></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="01"><s1>Sydney Institute for Astronomy (SIfA), School of Physics, University of Sydney</s1><s2>NSW 2006</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>17 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="Borucki, W J" sort="Borucki, W J" uniqKey="Borucki W" first="W. J." last="Borucki">W. J. Borucki</name><affiliation wicri:level="1"><inist:fA14 i1="13"><s1>NASA Ames Research Center, MS 244-30</s1><s2>Moffett Field, CA 94035</s2><s3>USA</s3><sZ>18 aut.</sZ><sZ>22 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Moffett Field, CA 94035</wicri:noRegion></affiliation></author><author><name sortKey="Christensen Dalsgaard, J" sort="Christensen Dalsgaard, J" uniqKey="Christensen Dalsgaard J" first="J." last="Christensen-Dalsgaard">J. Christensen-Dalsgaard</name><affiliation wicri:level="1"><inist:fA14 i1="10"><s1>Danish AsteroSeismology Centre (DASC), Department of Physics and Astronomy, Aarhus University</s1><s2>8000 Aarhus</s2><s3>DNK</s3><sZ>12 aut.</sZ><sZ>19 aut.</sZ></inist:fA14><country>Danemark</country><wicri:noRegion>8000 Aarhus</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="14"><s1>SETI Institute, NASA Ames Research Center, MS 244-30</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>Moffett Field, CA 94035</wicri:noRegion></affiliation></author><author><name sortKey="Jenkins, J M" sort="Jenkins, J M" uniqKey="Jenkins J" first="J. M." last="Jenkins">J. M. Jenkins</name><affiliation wicri:level="1"><inist:fA14 i1="14"><s1>SETI Institute, NASA Ames Research Center, MS 244-30</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>Moffett Field, CA 94035</wicri:noRegion></affiliation></author><author><name sortKey="Koch, D" sort="Koch, D" uniqKey="Koch D" first="D." last="Koch">D. Koch</name><affiliation wicri:level="1"><inist:fA14 i1="13"><s1>NASA Ames Research Center, MS 244-30</s1><s2>Moffett Field, CA 94035</s2><s3>USA</s3><sZ>18 aut.</sZ><sZ>22 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Moffett Field, CA 94035</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">10-0518684</idno><date when="2010">2010</date><idno type="stanalyst">PASCAL 10-0518684 INIST</idno><idno type="RBID">Pascal:10-0518684</idno><idno type="wicri:Area/PascalFrancis/Corpus">002246</idno><idno type="wicri:Area/PascalFrancis/Curation">003D48</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">002642</idno><idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">002642</idno><idno type="wicri:doubleKey">0004-637X:2010:Huber D:asteroseismology:of:red</idno><idno type="wicri:Area/Main/Merge">008110</idno><idno type="wicri:Area/Main/Curation">007A68</idno><idno type="wicri:Area/Main/Exploration">007A68</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">ASTEROSEISMOLOGY OF RED GIANTS FROM THE FIRST FOUR MONTHS OF KEPLER DATA: GLOBAL OSCILLATION PARAMETERS FOR 800 STARS</title><author><name sortKey="Huber, D" sort="Huber, D" uniqKey="Huber D" first="D." last="Huber">D. Huber</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Sydney Institute for Astronomy (SIfA), School of Physics, University of Sydney</s1><s2>NSW 2006</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>17 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="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="01"><s1>Sydney Institute for Astronomy (SIfA), School of Physics, University of Sydney</s1><s2>NSW 2006</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>17 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="Stello, D" sort="Stello, D" uniqKey="Stello D" first="D." last="Stello">D. Stello</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Sydney Institute for Astronomy (SIfA), School of Physics, University of Sydney</s1><s2>NSW 2006</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>17 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="Mosser, B" sort="Mosser, B" uniqKey="Mosser B" first="B." last="Mosser">B. Mosser</name><affiliation wicri:level="4"><inist:fA14 i1="02"><s1>LESIA, CNRS, Université Pierre et Marie Curie, Université Denis, Diderot, Observatoire de Paris</s1><s2>92195 Meudon</s2><s3>FRA</s3><sZ>4 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="Mathur, S" sort="Mathur, S" uniqKey="Mathur S" first="S." last="Mathur">S. Mathur</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>High Altitude Observatory, NCAR, P.O. BOX 3000</s1><s2>Boulder, CO 80307</s2><s3>USA</s3><sZ>5 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Boulder, CO 80307</wicri:noRegion></affiliation></author><author><name sortKey="Kallinger, T" sort="Kallinger, T" uniqKey="Kallinger T" first="T." last="Kallinger">T. Kallinger</name><affiliation wicri:level="1"><inist:fA14 i1="04"><s1>Department of Physics and Astronomy, University of British Columbia</s1><s2>Vancouver, BC</s2><s3>CAN</s3><sZ>6 aut.</sZ></inist:fA14><country>Canada</country><wicri:noRegion>Vancouver, BC</wicri:noRegion></affiliation><affiliation wicri:level="3"><inist:fA14 i1="05"><s1>Institute for Astronomy (IFA), University of Vienna</s1><s2>1180 Vienna</s2><s3>AUT</s3><sZ>6 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="Hekker, S" sort="Hekker, S" uniqKey="Hekker S" first="S." last="Hekker">S. Hekker</name><affiliation wicri:level="4"><inist:fA14 i1="06"><s1>School of Physics and Astronomy, University of Birmingham, Edgbaston</s1><s2>Birmingham B15 2TT</s2><s3>GBR</s3><sZ>7 aut.</sZ><sZ>8 aut.</sZ><sZ>13 aut.</sZ><sZ>15 aut.</sZ></inist:fA14><country>Royaume-Uni</country><wicri:noRegion>Birmingham B15 2TT</wicri:noRegion><orgName type="university">Université de Birmingham</orgName><placeName><settlement type="city">Birmingham</settlement><region type="country">Angleterre</region><region type="région" nuts="1">Midlands de l'Ouest</region></placeName></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="06"><s1>School of Physics and Astronomy, University of Birmingham, Edgbaston</s1><s2>Birmingham B15 2TT</s2><s3>GBR</s3><sZ>7 aut.</sZ><sZ>8 aut.</sZ><sZ>13 aut.</sZ><sZ>15 aut.</sZ></inist:fA14><country>Royaume-Uni</country><wicri:noRegion>Birmingham B15 2TT</wicri:noRegion><orgName type="university">Université de Birmingham</orgName><placeName><settlement type="city">Birmingham</settlement><region type="country">Angleterre</region><region type="région" nuts="1">Midlands de l'Ouest</region></placeName></affiliation></author><author><name sortKey="Buzasi, D L" sort="Buzasi, D L" uniqKey="Buzasi D" first="D. L." last="Buzasi">D. L. Buzasi</name><affiliation wicri:level="1"><inist:fA14 i1="07"><s1>Eureka Scientific, 2452 Delmer Street Suite 100</s1><s2>Oakland, CA 94602-3017</s2><s3>USA</s3><sZ>9 aut.</sZ><sZ>16 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Oakland, CA 94602-3017</wicri:noRegion></affiliation></author><author><name sortKey="De Ridder, J" sort="De Ridder, J" uniqKey="De Ridder J" first="J." last="De Ridder">J. De Ridder</name><affiliation wicri:level="1"><inist:fA14 i1="08"><s1>Instituut voor Sterrenkunde, K.U. Leuven</s1><s3>BEL</s3><sZ>10 aut.</sZ></inist:fA14><country>Belgique</country><wicri:noRegion>Instituut voor Sterrenkunde, K.U. Leuven</wicri:noRegion></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 wicri:level="1"><inist:fA14 i1="09"><s1>Space Telescope Science Institute, 3700 San Martin Drive</s1><s2>Baltimore, MD 21218</s2><s3>USA</s3><sZ>11 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Baltimore, MD 21218</wicri:noRegion></affiliation></author><author><name sortKey="Kjeldseni, H" sort="Kjeldseni, H" uniqKey="Kjeldseni H" first="H." last="Kjeldseni">H. Kjeldseni</name><affiliation wicri:level="1"><inist:fA14 i1="10"><s1>Danish AsteroSeismology Centre (DASC), Department of Physics and Astronomy, Aarhus University</s1><s2>8000 Aarhus</s2><s3>DNK</s3><sZ>12 aut.</sZ><sZ>19 aut.</sZ></inist:fA14><country>Danemark</country><wicri:noRegion>8000 Aarhus</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="06"><s1>School of Physics and Astronomy, University of Birmingham, Edgbaston</s1><s2>Birmingham B15 2TT</s2><s3>GBR</s3><sZ>7 aut.</sZ><sZ>8 aut.</sZ><sZ>13 aut.</sZ><sZ>15 aut.</sZ></inist:fA14><country>Royaume-Uni</country><wicri:noRegion>Birmingham B15 2TT</wicri:noRegion><orgName type="university">Université de Birmingham</orgName><placeName><settlement type="city">Birmingham</settlement><region type="country">Angleterre</region><region type="région" nuts="1">Midlands de l'Ouest</region></placeName></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="11"><s1>Laboratoire AIM, CEA/DSM-CNRS, Université Paris 7 Diderot, IRFU/SAp, Centre de Saclay</s1><s2>91191, Gif-sur-Yvette</s2><s3>FRA</s3><sZ>14 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="Hale, S J" sort="Hale, S J" uniqKey="Hale S" first="S. J." last="Hale">S. J. Hale</name><affiliation wicri:level="4"><inist:fA14 i1="06"><s1>School of Physics and Astronomy, University of Birmingham, Edgbaston</s1><s2>Birmingham B15 2TT</s2><s3>GBR</s3><sZ>7 aut.</sZ><sZ>8 aut.</sZ><sZ>13 aut.</sZ><sZ>15 aut.</sZ></inist:fA14><country>Royaume-Uni</country><wicri:noRegion>Birmingham B15 2TT</wicri:noRegion><orgName type="university">Université de Birmingham</orgName><placeName><settlement type="city">Birmingham</settlement><region type="country">Angleterre</region><region type="région" nuts="1">Midlands de l'Ouest</region></placeName></affiliation></author><author><name sortKey="Preston, H L" sort="Preston, H L" uniqKey="Preston H" first="H. L." last="Preston">H. L. Preston</name><affiliation wicri:level="1"><inist:fA14 i1="07"><s1>Eureka Scientific, 2452 Delmer Street Suite 100</s1><s2>Oakland, CA 94602-3017</s2><s3>USA</s3><sZ>9 aut.</sZ><sZ>16 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Oakland, CA 94602-3017</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="12"><s1>Department of Mathematical Sciences, University of South Africa, Box 392 UNISA 0003</s1><s3>ZAF</s3><sZ>16 aut.</sZ></inist:fA14><country>Afrique du Sud</country><wicri:noRegion>Department of Mathematical Sciences, University of South Africa, Box 392 UNISA 0003</wicri:noRegion></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="01"><s1>Sydney Institute for Astronomy (SIfA), School of Physics, University of Sydney</s1><s2>NSW 2006</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>17 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="Borucki, W J" sort="Borucki, W J" uniqKey="Borucki W" first="W. J." last="Borucki">W. J. Borucki</name><affiliation wicri:level="1"><inist:fA14 i1="13"><s1>NASA Ames Research Center, MS 244-30</s1><s2>Moffett Field, CA 94035</s2><s3>USA</s3><sZ>18 aut.</sZ><sZ>22 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Moffett Field, CA 94035</wicri:noRegion></affiliation></author><author><name sortKey="Christensen Dalsgaard, J" sort="Christensen Dalsgaard, J" uniqKey="Christensen Dalsgaard J" first="J." last="Christensen-Dalsgaard">J. Christensen-Dalsgaard</name><affiliation wicri:level="1"><inist:fA14 i1="10"><s1>Danish AsteroSeismology Centre (DASC), Department of Physics and Astronomy, Aarhus University</s1><s2>8000 Aarhus</s2><s3>DNK</s3><sZ>12 aut.</sZ><sZ>19 aut.</sZ></inist:fA14><country>Danemark</country><wicri:noRegion>8000 Aarhus</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="14"><s1>SETI Institute, NASA Ames Research Center, MS 244-30</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>Moffett Field, CA 94035</wicri:noRegion></affiliation></author><author><name sortKey="Jenkins, J M" sort="Jenkins, J M" uniqKey="Jenkins J" first="J. M." last="Jenkins">J. M. Jenkins</name><affiliation wicri:level="1"><inist:fA14 i1="14"><s1>SETI Institute, NASA Ames Research Center, MS 244-30</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>Moffett Field, CA 94035</wicri:noRegion></affiliation></author><author><name sortKey="Koch, D" sort="Koch, D" uniqKey="Koch D" first="D." last="Koch">D. Koch</name><affiliation wicri:level="1"><inist:fA14 i1="13"><s1>NASA Ames Research Center, MS 244-30</s1><s2>Moffett Field, CA 94035</s2><s3>USA</s3><sZ>18 aut.</sZ><sZ>22 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Moffett Field, CA 94035</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">The Astrophysical journal</title><title level="j" type="abbreviated">Astrophys. j.</title><idno type="ISSN">0004-637X</idno><imprint><date when="2010">2010</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">The Astrophysical journal</title><title level="j" type="abbreviated">Astrophys. j.</title><idno type="ISSN">0004-637X</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Astroseismology</term><term>Correlations</term><term>Giant stars</term><term>Late type stars</term><term>Luminosity</term><term>Main sequence stars</term><term>Photometry</term><term>Physical parameter</term><term>Red giant stars</term><term>Red stars</term><term>Star models</term><term>Stellar evolution</term><term>Stellar population</term><term>Trend function</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Astéroséismologie</term><term>Géante rouge</term><term>Etoile rouge</term><term>Etoile géante</term><term>Photométrie</term><term>Evolution stellaire</term><term>Etoile séquence principale</term><term>Modèle stellaire</term><term>Population stellaire</term><term>Fonction tendance</term><term>Luminosité</term><term>Corrélation</term><term>Paramètre physique</term><term>Etoile type avancé</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">We have studied solar-like oscillations in ˜800 red giant stars using Kepler long-cadence photometry. The sample includes stars ranging in evolution from the lower part of the red giant branch to the helium main sequence. We investigate the relation between the large frequency separation (Δν) and the frequency of maximum power (ν<sub>max</sub>) and show that it is different for red giants than for main-sequence stars, which is consistent with evolutionary models and scaling relations. The distributions of ν<sub>max</sub> and Δν are in qualitative agreement with a simple stellar population model of the Kepler field, including the first evidence for a secondary clump population characterized by M ? 2 M<sub>◦.</sub> and ν<sub>max</sub> ≃ 40-110 μHz. We measured the small frequency separations δν<sub>02</sub> and δν<sub>01</sub> in over 400 stars and δν<sub>03</sub> in over 40. We present C-D diagrams for I = 1, 2, and 3 and show that the frequency separation ratios δν<sub>02</sub>/Δν and δν<sub>01</sub>/Δν have opposite trends as a function of Δν. The data show a narrowing of the l = 1 ridge toward lower ν<sub>max</sub>, in agreement with models predicting more efficient mode trapping in stars with higher luminosity. We investigate the offset ∈ in the asymptotic relation and find a clear correlation with Δν, demonstrating that it is related to fundamental stellar parameters. Finally, we present the first amplitude-ν<sub>max</sub> relation for Kepler red giants. We observe a lack of low-amplitude stars for ν<sub>max </sub>? 110 μHz and find that, for a given ν<sub>max</sub> between 40 and 110 μHz, stars with lower Δν (and consequently higher mass) tend to show lower amplitudes than stars with higher Δν.</div></front></TEI><affiliations><list><country><li>Afrique du Sud</li><li>Australie</li><li>Autriche</li><li>Belgique</li><li>Canada</li><li>Danemark</li><li>France</li><li>Royaume-Uni</li><li>États-Unis</li></country><region><li>Angleterre</li><li>Midlands de l'Ouest</li><li>Nouvelle-Galles du Sud</li><li>Vienne (Autriche)</li><li>Île-de-France</li></region><settlement><li>Birmingham</li><li>Gif-sur-Yvette</li><li>Meudon</li><li>Paris</li><li>Sydney</li><li>Vienne (Autriche)</li></settlement><orgName><li>Université Pierre-et-Marie-Curie</li><li>Université de Birmingham</li><li>Université de Sydney</li></orgName></list><tree><country name="Australie"><region name="Nouvelle-Galles du Sud"><name sortKey="Huber, D" sort="Huber, D" uniqKey="Huber D" first="D." last="Huber">D. Huber</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="Stello, D" sort="Stello, D" uniqKey="Stello D" first="D." last="Stello">D. Stello</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="France"><region name="Île-de-France"><name sortKey="Mosser, B" sort="Mosser, B" uniqKey="Mosser B" first="B." last="Mosser">B. Mosser</name></region><name sortKey="Garcia, R A" sort="Garcia, R A" uniqKey="Garcia R" first="R. A." last="Garcia">R. A. Garcia</name></country><country name="États-Unis"><noRegion><name sortKey="Mathur, S" sort="Mathur, S" uniqKey="Mathur S" first="S." last="Mathur">S. Mathur</name></noRegion><name sortKey="Borucki, W J" sort="Borucki, W J" uniqKey="Borucki W" first="W. J." last="Borucki">W. J. Borucki</name><name sortKey="Buzasi, D L" sort="Buzasi, D L" uniqKey="Buzasi D" first="D. L." last="Buzasi">D. L. Buzasi</name><name sortKey="Clarke, B D" sort="Clarke, B D" uniqKey="Clarke B" first="B. D." last="Clarke">B. D. Clarke</name><name sortKey="Gilliland, R L" sort="Gilliland, R L" uniqKey="Gilliland R" first="R. L." last="Gilliland">R. L. Gilliland</name><name sortKey="Jenkins, J M" sort="Jenkins, J M" uniqKey="Jenkins J" first="J. M." last="Jenkins">J. M. Jenkins</name><name sortKey="Koch, D" sort="Koch, D" uniqKey="Koch D" first="D." last="Koch">D. Koch</name><name sortKey="Preston, H L" sort="Preston, H L" uniqKey="Preston H" first="H. L." last="Preston">H. L. Preston</name></country><country name="Canada"><noRegion><name sortKey="Kallinger, T" sort="Kallinger, T" uniqKey="Kallinger T" first="T." last="Kallinger">T. Kallinger</name></noRegion></country><country name="Autriche"><region name="Vienne (Autriche)"><name sortKey="Kallinger, T" sort="Kallinger, T" uniqKey="Kallinger T" first="T." last="Kallinger">T. Kallinger</name></region></country><country name="Royaume-Uni"><region name="Angleterre"><name sortKey="Hekker, S" sort="Hekker, S" uniqKey="Hekker S" first="S." last="Hekker">S. Hekker</name></region><name sortKey="Chaplin, W J" sort="Chaplin, W J" uniqKey="Chaplin W" first="W. J." last="Chaplin">W. J. Chaplin</name><name sortKey="Elsworth, Y P" sort="Elsworth, Y P" uniqKey="Elsworth Y" first="Y. P." last="Elsworth">Y. P. Elsworth</name><name sortKey="Hale, S J" sort="Hale, S J" uniqKey="Hale S" first="S. J." last="Hale">S. J. Hale</name></country><country name="Belgique"><noRegion><name sortKey="De Ridder, J" sort="De Ridder, J" uniqKey="De Ridder J" first="J." last="De Ridder">J. De Ridder</name></noRegion></country><country name="Danemark"><noRegion><name sortKey="Kjeldseni, H" sort="Kjeldseni, H" uniqKey="Kjeldseni H" first="H." last="Kjeldseni">H. Kjeldseni</name></noRegion><name sortKey="Christensen Dalsgaard, J" sort="Christensen Dalsgaard, J" uniqKey="Christensen Dalsgaard J" first="J." last="Christensen-Dalsgaard">J. Christensen-Dalsgaard</name></country><country name="Afrique du Sud"><noRegion><name sortKey="Preston, H L" sort="Preston, H L" uniqKey="Preston H" first="H. L." last="Preston">H. L. Preston</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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