Estimating the p-mode frequencies of the solar twin 18 Scorpii
Identifieur interne : 005C83 ( Main/Exploration ); précédent : 005C82; suivant : 005C84Estimating the p-mode frequencies of the solar twin 18 Scorpii
Auteurs : M. Bazot [Portugal] ; T. L. Campante [Portugal] ; W. J. Chaplin [Royaume-Uni] ; H. Carfantan [France] ; T. R. Bedding [Australie] ; X. Dumusque [Portugal, Suisse] ; A.-M. Broomhall [Royaume-Uni] ; P. Petit [France] ; S. Theado [France] ; V. Van Grootel [France] ; T. Arentoft [Danemark] ; M. Castro [Brésil] ; J. Christensen-Dalsgaard [Danemark] ; J.-D. Jr Do Nascimento [Brésil] ; B. Dintrans [France] ; H. Kjeldsen [Danemark] ; M. J. P. F. G. Monteiro [Portugal] ; N. C. Santos [Portugal] ; S. Sousa [Portugal] ; S. Vauclair [France]Source :
- Astronomy and astrophysics : (Berlin. Print) [ 0004-6361 ] ; 2012.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
Solar twins have been a focus of attention for more than a decade, because their structure is extremely close to that of the Sun. Today, thanks to high-precision spectrometers, it is possible to use asteroseismology to probe their interiors. Our goal is to use time series obtained from the HARPS spectrometer to extract the oscillation frequencies of 18 Sco, the brightest solar twin. We used the tools of spectral analysis to estimate these quantities. We estimate 52 frequencies using an MCMC algorithm. After examination of their probability densities and comparison with results from direct MAP optimization, we obtain a minimal set of 21 reliable modes. The identification of each pulsation mode is straightforwardly accomplished by comparing to the well-established solar pulsation modes. We also derived some basic seismic indicators using these values. These results offer a good basis to start a detailed seismic analysis of 18 Sco using stellar models.
Affiliations:
- Australie, Brésil, Danemark, France, Portugal, Royaume-Uni, Suisse
- Angleterre, Midi-Pyrénées, Midlands de l'Ouest, Occitanie (région administrative)
- Birmingham, Toulouse
- Université de Birmingham
Links toward previous steps (curation, corpus...)
- to stream PascalFrancis, to step Corpus: 000F25
- to stream PascalFrancis, to step Curation: 004F96
- to stream PascalFrancis, to step Checkpoint: 001156
- to stream Main, to step Merge: 005F91
- to stream Main, to step Curation: 005C83
Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Estimating the p-mode frequencies of the solar twin 18 Scorpii</title><author><name sortKey="Bazot, M" sort="Bazot, M" uniqKey="Bazot M" first="M." last="Bazot">M. Bazot</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Centro de Astrofisica da Universidade do Porto, Rua das Estrelas</s1><s2>4150-762 Porto</s2><s3>PRT</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>17 aut.</sZ><sZ>18 aut.</sZ><sZ>19 aut.</sZ></inist:fA14><country>Portugal</country><wicri:noRegion>4150-762 Porto</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="01"><s1>Centro de Astrofisica da Universidade do Porto, Rua das Estrelas</s1><s2>4150-762 Porto</s2><s3>PRT</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>17 aut.</sZ><sZ>18 aut.</sZ><sZ>19 aut.</sZ></inist:fA14><country>Portugal</country><wicri:noRegion>4150-762 Porto</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="02"><s1>School of Physics and Astronomy, University of Birmingham</s1><s2>Edgbaston, Birmingham B15 2TT</s2><s3>GBR</s3><sZ>3 aut.</sZ><sZ>7 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="Carfantan, H" sort="Carfantan, H" uniqKey="Carfantan H" first="H." last="Carfantan">H. Carfantan</name><affiliation wicri:level="3"><inist:fA14 i1="03"><s1>Institut de Recherche en Astrophysique et Planetologie, Universite de Toulouse UPS-OMP/CNRS, 14 Av. Édouard Belin</s1><s2>31400 Toulouse</s2><s3>FRA</s3><sZ>4 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>10 aut.</sZ><sZ>15 aut.</sZ><sZ>20 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Midi-Pyrénées</region><settlement type="city">Toulouse</settlement></placeName></affiliation></author><author><name sortKey="Bedding, T R" sort="Bedding, T R" uniqKey="Bedding T" first="T. R." last="Bedding">T. R. Bedding</name><affiliation wicri:level="1"><inist:fA14 i1="04"><s1>Sydney Institute for Astronomy, School of Physics, University of Sydney NSW 2006</s1><s3>AUS</s3><sZ>5 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Sydney Institute for Astronomy, School of Physics, University of Sydney NSW 2006</wicri:noRegion></affiliation></author><author><name sortKey="Dumusque, X" sort="Dumusque, X" uniqKey="Dumusque X" first="X." last="Dumusque">X. Dumusque</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Centro de Astrofisica da Universidade do Porto, Rua das Estrelas</s1><s2>4150-762 Porto</s2><s3>PRT</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>17 aut.</sZ><sZ>18 aut.</sZ><sZ>19 aut.</sZ></inist:fA14><country>Portugal</country><wicri:noRegion>4150-762 Porto</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="05"><s1>Observatoire de Geneve, 51 chemin des Maillettes</s1><s2>1290 Sauverny</s2><s3>CHE</s3><sZ>6 aut.</sZ></inist:fA14><country>Suisse</country><wicri:noRegion>1290 Sauverny</wicri:noRegion></affiliation></author><author><name sortKey="Broomhall, A M" sort="Broomhall, A M" uniqKey="Broomhall A" first="A.-M." last="Broomhall">A.-M. Broomhall</name><affiliation wicri:level="4"><inist:fA14 i1="02"><s1>School of Physics and Astronomy, University of Birmingham</s1><s2>Edgbaston, Birmingham B15 2TT</s2><s3>GBR</s3><sZ>3 aut.</sZ><sZ>7 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="Petit, P" sort="Petit, P" uniqKey="Petit P" first="P." last="Petit">P. Petit</name><affiliation wicri:level="3"><inist:fA14 i1="03"><s1>Institut de Recherche en Astrophysique et Planetologie, Universite de Toulouse UPS-OMP/CNRS, 14 Av. Édouard Belin</s1><s2>31400 Toulouse</s2><s3>FRA</s3><sZ>4 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>10 aut.</sZ><sZ>15 aut.</sZ><sZ>20 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Midi-Pyrénées</region><settlement type="city">Toulouse</settlement></placeName></affiliation></author><author><name sortKey="Theado, S" sort="Theado, S" uniqKey="Theado S" first="S." last="Theado">S. Theado</name><affiliation wicri:level="3"><inist:fA14 i1="03"><s1>Institut de Recherche en Astrophysique et Planetologie, Universite de Toulouse UPS-OMP/CNRS, 14 Av. Édouard Belin</s1><s2>31400 Toulouse</s2><s3>FRA</s3><sZ>4 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>10 aut.</sZ><sZ>15 aut.</sZ><sZ>20 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Midi-Pyrénées</region><settlement type="city">Toulouse</settlement></placeName></affiliation></author><author><name sortKey="Van Grootel, V" sort="Van Grootel, V" uniqKey="Van Grootel V" first="V." last="Van Grootel">V. Van Grootel</name><affiliation wicri:level="3"><inist:fA14 i1="03"><s1>Institut de Recherche en Astrophysique et Planetologie, Universite de Toulouse UPS-OMP/CNRS, 14 Av. Édouard Belin</s1><s2>31400 Toulouse</s2><s3>FRA</s3><sZ>4 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>10 aut.</sZ><sZ>15 aut.</sZ><sZ>20 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Midi-Pyrénées</region><settlement type="city">Toulouse</settlement></placeName></affiliation></author><author><name sortKey="Arentoft, T" sort="Arentoft, T" uniqKey="Arentoft T" first="T." last="Arentoft">T. Arentoft</name><affiliation wicri:level="1"><inist:fA14 i1="06"><s1>VUC Aarhus, Ingerslevs Boulevard 3</s1><s2>8100 Aarhus C.</s2><s3>DNK</s3><sZ>11 aut.</sZ></inist:fA14><country>Danemark</country><wicri:noRegion>8100 Aarhus C.</wicri:noRegion></affiliation></author><author><name sortKey="Castro, M" sort="Castro, M" uniqKey="Castro M" first="M." last="Castro">M. Castro</name><affiliation wicri:level="1"><inist:fA14 i1="07"><s1>Depart. de Ffsica Teórica e Experimental, Univers. Federal do Rio Grande do Norte</s1><s2>59072-970 Natal, R.N.</s2><s3>BRA</s3><sZ>12 aut.</sZ><sZ>14 aut.</sZ></inist:fA14><country>Brésil</country><wicri:noRegion>59072-970 Natal, R.N.</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="08"><s1>Stellar Astrophysics Centre, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120</s1><s2>8000 Aarhus C</s2><s3>DNK</s3><sZ>13 aut.</sZ><sZ>16 aut.</sZ></inist:fA14><country>Danemark</country><wicri:noRegion>8000 Aarhus C</wicri:noRegion></affiliation></author><author><name sortKey="Do Nascimento, J D Jr" sort="Do Nascimento, J D Jr" uniqKey="Do Nascimento J" first="J.-D. Jr" last="Do Nascimento">J.-D. Jr Do Nascimento</name><affiliation wicri:level="1"><inist:fA14 i1="07"><s1>Depart. de Ffsica Teórica e Experimental, Univers. Federal do Rio Grande do Norte</s1><s2>59072-970 Natal, R.N.</s2><s3>BRA</s3><sZ>12 aut.</sZ><sZ>14 aut.</sZ></inist:fA14><country>Brésil</country><wicri:noRegion>59072-970 Natal, R.N.</wicri:noRegion></affiliation></author><author><name sortKey="Dintrans, B" sort="Dintrans, B" uniqKey="Dintrans B" first="B." last="Dintrans">B. Dintrans</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Institut de Recherche en Astrophysique et Planetologie, Universite de Toulouse UPS-OMP/CNRS, 14 Av. Édouard Belin</s1><s2>31400 Toulouse</s2><s3>FRA</s3><sZ>4 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>10 aut.</sZ><sZ>15 aut.</sZ><sZ>20 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="Kjeldsen, H" sort="Kjeldsen, H" uniqKey="Kjeldsen H" first="H." last="Kjeldsen">H. Kjeldsen</name><affiliation wicri:level="1"><inist:fA14 i1="08"><s1>Stellar Astrophysics Centre, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120</s1><s2>8000 Aarhus C</s2><s3>DNK</s3><sZ>13 aut.</sZ><sZ>16 aut.</sZ></inist:fA14><country>Danemark</country><wicri:noRegion>8000 Aarhus C</wicri:noRegion></affiliation></author><author><name sortKey="Monteiro, M J P F G" sort="Monteiro, M J P F G" uniqKey="Monteiro M" first="M. J. P. F. G." last="Monteiro">M. J. P. F. G. Monteiro</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Centro de Astrofisica da Universidade do Porto, Rua das Estrelas</s1><s2>4150-762 Porto</s2><s3>PRT</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>17 aut.</sZ><sZ>18 aut.</sZ><sZ>19 aut.</sZ></inist:fA14><country>Portugal</country><wicri:noRegion>4150-762 Porto</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="09"><s1>Departamento de Física e Astronomia, Faculdade de Ciencias, Universidade do Porto</s1><s2>Porto</s2><s3>PRT</s3><sZ>17 aut.</sZ><sZ>18 aut.</sZ></inist:fA14><country>Portugal</country><wicri:noRegion>Porto</wicri:noRegion></affiliation></author><author><name sortKey="Santos, N C" sort="Santos, N C" uniqKey="Santos N" first="N. C." last="Santos">N. C. Santos</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Centro de Astrofisica da Universidade do Porto, Rua das Estrelas</s1><s2>4150-762 Porto</s2><s3>PRT</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>17 aut.</sZ><sZ>18 aut.</sZ><sZ>19 aut.</sZ></inist:fA14><country>Portugal</country><wicri:noRegion>4150-762 Porto</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="09"><s1>Departamento de Física e Astronomia, Faculdade de Ciencias, Universidade do Porto</s1><s2>Porto</s2><s3>PRT</s3><sZ>17 aut.</sZ><sZ>18 aut.</sZ></inist:fA14><country>Portugal</country><wicri:noRegion>Porto</wicri:noRegion></affiliation></author><author><name sortKey="Sousa, S" sort="Sousa, S" uniqKey="Sousa S" first="S." last="Sousa">S. Sousa</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Centro de Astrofisica da Universidade do Porto, Rua das Estrelas</s1><s2>4150-762 Porto</s2><s3>PRT</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>17 aut.</sZ><sZ>18 aut.</sZ><sZ>19 aut.</sZ></inist:fA14><country>Portugal</country><wicri:noRegion>4150-762 Porto</wicri:noRegion></affiliation></author><author><name sortKey="Vauclair, S" sort="Vauclair, S" uniqKey="Vauclair S" first="S." last="Vauclair">S. Vauclair</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Institut de Recherche en Astrophysique et Planetologie, Universite de Toulouse UPS-OMP/CNRS, 14 Av. Édouard Belin</s1><s2>31400 Toulouse</s2><s3>FRA</s3><sZ>4 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>10 aut.</sZ><sZ>15 aut.</sZ><sZ>20 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></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">12-0411767</idno><date when="2012">2012</date><idno type="stanalyst">PASCAL 12-0411767 INIST</idno><idno type="RBID">Pascal:12-0411767</idno><idno type="wicri:Area/PascalFrancis/Corpus">000F25</idno><idno type="wicri:Area/PascalFrancis/Curation">004F96</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">001156</idno><idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">001156</idno><idno type="wicri:doubleKey">0004-6361:2012:Bazot M:estimating:the:p</idno><idno type="wicri:Area/Main/Merge">005F91</idno><idno type="wicri:Area/Main/Curation">005C83</idno><idno type="wicri:Area/Main/Exploration">005C83</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Estimating the p-mode frequencies of the solar twin 18 Scorpii</title><author><name sortKey="Bazot, M" sort="Bazot, M" uniqKey="Bazot M" first="M." last="Bazot">M. Bazot</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Centro de Astrofisica da Universidade do Porto, Rua das Estrelas</s1><s2>4150-762 Porto</s2><s3>PRT</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>17 aut.</sZ><sZ>18 aut.</sZ><sZ>19 aut.</sZ></inist:fA14><country>Portugal</country><wicri:noRegion>4150-762 Porto</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="01"><s1>Centro de Astrofisica da Universidade do Porto, Rua das Estrelas</s1><s2>4150-762 Porto</s2><s3>PRT</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>17 aut.</sZ><sZ>18 aut.</sZ><sZ>19 aut.</sZ></inist:fA14><country>Portugal</country><wicri:noRegion>4150-762 Porto</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="02"><s1>School of Physics and Astronomy, University of Birmingham</s1><s2>Edgbaston, Birmingham B15 2TT</s2><s3>GBR</s3><sZ>3 aut.</sZ><sZ>7 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="Carfantan, H" sort="Carfantan, H" uniqKey="Carfantan H" first="H." last="Carfantan">H. Carfantan</name><affiliation wicri:level="3"><inist:fA14 i1="03"><s1>Institut de Recherche en Astrophysique et Planetologie, Universite de Toulouse UPS-OMP/CNRS, 14 Av. Édouard Belin</s1><s2>31400 Toulouse</s2><s3>FRA</s3><sZ>4 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>10 aut.</sZ><sZ>15 aut.</sZ><sZ>20 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Midi-Pyrénées</region><settlement type="city">Toulouse</settlement></placeName></affiliation></author><author><name sortKey="Bedding, T R" sort="Bedding, T R" uniqKey="Bedding T" first="T. R." last="Bedding">T. R. Bedding</name><affiliation wicri:level="1"><inist:fA14 i1="04"><s1>Sydney Institute for Astronomy, School of Physics, University of Sydney NSW 2006</s1><s3>AUS</s3><sZ>5 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Sydney Institute for Astronomy, School of Physics, University of Sydney NSW 2006</wicri:noRegion></affiliation></author><author><name sortKey="Dumusque, X" sort="Dumusque, X" uniqKey="Dumusque X" first="X." last="Dumusque">X. Dumusque</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Centro de Astrofisica da Universidade do Porto, Rua das Estrelas</s1><s2>4150-762 Porto</s2><s3>PRT</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>17 aut.</sZ><sZ>18 aut.</sZ><sZ>19 aut.</sZ></inist:fA14><country>Portugal</country><wicri:noRegion>4150-762 Porto</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="05"><s1>Observatoire de Geneve, 51 chemin des Maillettes</s1><s2>1290 Sauverny</s2><s3>CHE</s3><sZ>6 aut.</sZ></inist:fA14><country>Suisse</country><wicri:noRegion>1290 Sauverny</wicri:noRegion></affiliation></author><author><name sortKey="Broomhall, A M" sort="Broomhall, A M" uniqKey="Broomhall A" first="A.-M." last="Broomhall">A.-M. Broomhall</name><affiliation wicri:level="4"><inist:fA14 i1="02"><s1>School of Physics and Astronomy, University of Birmingham</s1><s2>Edgbaston, Birmingham B15 2TT</s2><s3>GBR</s3><sZ>3 aut.</sZ><sZ>7 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="Petit, P" sort="Petit, P" uniqKey="Petit P" first="P." last="Petit">P. Petit</name><affiliation wicri:level="3"><inist:fA14 i1="03"><s1>Institut de Recherche en Astrophysique et Planetologie, Universite de Toulouse UPS-OMP/CNRS, 14 Av. Édouard Belin</s1><s2>31400 Toulouse</s2><s3>FRA</s3><sZ>4 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>10 aut.</sZ><sZ>15 aut.</sZ><sZ>20 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Midi-Pyrénées</region><settlement type="city">Toulouse</settlement></placeName></affiliation></author><author><name sortKey="Theado, S" sort="Theado, S" uniqKey="Theado S" first="S." last="Theado">S. Theado</name><affiliation wicri:level="3"><inist:fA14 i1="03"><s1>Institut de Recherche en Astrophysique et Planetologie, Universite de Toulouse UPS-OMP/CNRS, 14 Av. Édouard Belin</s1><s2>31400 Toulouse</s2><s3>FRA</s3><sZ>4 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>10 aut.</sZ><sZ>15 aut.</sZ><sZ>20 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Midi-Pyrénées</region><settlement type="city">Toulouse</settlement></placeName></affiliation></author><author><name sortKey="Van Grootel, V" sort="Van Grootel, V" uniqKey="Van Grootel V" first="V." last="Van Grootel">V. Van Grootel</name><affiliation wicri:level="3"><inist:fA14 i1="03"><s1>Institut de Recherche en Astrophysique et Planetologie, Universite de Toulouse UPS-OMP/CNRS, 14 Av. Édouard Belin</s1><s2>31400 Toulouse</s2><s3>FRA</s3><sZ>4 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>10 aut.</sZ><sZ>15 aut.</sZ><sZ>20 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Midi-Pyrénées</region><settlement type="city">Toulouse</settlement></placeName></affiliation></author><author><name sortKey="Arentoft, T" sort="Arentoft, T" uniqKey="Arentoft T" first="T." last="Arentoft">T. Arentoft</name><affiliation wicri:level="1"><inist:fA14 i1="06"><s1>VUC Aarhus, Ingerslevs Boulevard 3</s1><s2>8100 Aarhus C.</s2><s3>DNK</s3><sZ>11 aut.</sZ></inist:fA14><country>Danemark</country><wicri:noRegion>8100 Aarhus C.</wicri:noRegion></affiliation></author><author><name sortKey="Castro, M" sort="Castro, M" uniqKey="Castro M" first="M." last="Castro">M. Castro</name><affiliation wicri:level="1"><inist:fA14 i1="07"><s1>Depart. de Ffsica Teórica e Experimental, Univers. Federal do Rio Grande do Norte</s1><s2>59072-970 Natal, R.N.</s2><s3>BRA</s3><sZ>12 aut.</sZ><sZ>14 aut.</sZ></inist:fA14><country>Brésil</country><wicri:noRegion>59072-970 Natal, R.N.</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="08"><s1>Stellar Astrophysics Centre, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120</s1><s2>8000 Aarhus C</s2><s3>DNK</s3><sZ>13 aut.</sZ><sZ>16 aut.</sZ></inist:fA14><country>Danemark</country><wicri:noRegion>8000 Aarhus C</wicri:noRegion></affiliation></author><author><name sortKey="Do Nascimento, J D Jr" sort="Do Nascimento, J D Jr" uniqKey="Do Nascimento J" first="J.-D. Jr" last="Do Nascimento">J.-D. Jr Do Nascimento</name><affiliation wicri:level="1"><inist:fA14 i1="07"><s1>Depart. de Ffsica Teórica e Experimental, Univers. Federal do Rio Grande do Norte</s1><s2>59072-970 Natal, R.N.</s2><s3>BRA</s3><sZ>12 aut.</sZ><sZ>14 aut.</sZ></inist:fA14><country>Brésil</country><wicri:noRegion>59072-970 Natal, R.N.</wicri:noRegion></affiliation></author><author><name sortKey="Dintrans, B" sort="Dintrans, B" uniqKey="Dintrans B" first="B." last="Dintrans">B. Dintrans</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Institut de Recherche en Astrophysique et Planetologie, Universite de Toulouse UPS-OMP/CNRS, 14 Av. Édouard Belin</s1><s2>31400 Toulouse</s2><s3>FRA</s3><sZ>4 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>10 aut.</sZ><sZ>15 aut.</sZ><sZ>20 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="Kjeldsen, H" sort="Kjeldsen, H" uniqKey="Kjeldsen H" first="H." last="Kjeldsen">H. Kjeldsen</name><affiliation wicri:level="1"><inist:fA14 i1="08"><s1>Stellar Astrophysics Centre, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120</s1><s2>8000 Aarhus C</s2><s3>DNK</s3><sZ>13 aut.</sZ><sZ>16 aut.</sZ></inist:fA14><country>Danemark</country><wicri:noRegion>8000 Aarhus C</wicri:noRegion></affiliation></author><author><name sortKey="Monteiro, M J P F G" sort="Monteiro, M J P F G" uniqKey="Monteiro M" first="M. J. P. F. G." last="Monteiro">M. J. P. F. G. Monteiro</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Centro de Astrofisica da Universidade do Porto, Rua das Estrelas</s1><s2>4150-762 Porto</s2><s3>PRT</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>17 aut.</sZ><sZ>18 aut.</sZ><sZ>19 aut.</sZ></inist:fA14><country>Portugal</country><wicri:noRegion>4150-762 Porto</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="09"><s1>Departamento de Física e Astronomia, Faculdade de Ciencias, Universidade do Porto</s1><s2>Porto</s2><s3>PRT</s3><sZ>17 aut.</sZ><sZ>18 aut.</sZ></inist:fA14><country>Portugal</country><wicri:noRegion>Porto</wicri:noRegion></affiliation></author><author><name sortKey="Santos, N C" sort="Santos, N C" uniqKey="Santos N" first="N. C." last="Santos">N. C. Santos</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Centro de Astrofisica da Universidade do Porto, Rua das Estrelas</s1><s2>4150-762 Porto</s2><s3>PRT</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>17 aut.</sZ><sZ>18 aut.</sZ><sZ>19 aut.</sZ></inist:fA14><country>Portugal</country><wicri:noRegion>4150-762 Porto</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="09"><s1>Departamento de Física e Astronomia, Faculdade de Ciencias, Universidade do Porto</s1><s2>Porto</s2><s3>PRT</s3><sZ>17 aut.</sZ><sZ>18 aut.</sZ></inist:fA14><country>Portugal</country><wicri:noRegion>Porto</wicri:noRegion></affiliation></author><author><name sortKey="Sousa, S" sort="Sousa, S" uniqKey="Sousa S" first="S." last="Sousa">S. Sousa</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Centro de Astrofisica da Universidade do Porto, Rua das Estrelas</s1><s2>4150-762 Porto</s2><s3>PRT</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>17 aut.</sZ><sZ>18 aut.</sZ><sZ>19 aut.</sZ></inist:fA14><country>Portugal</country><wicri:noRegion>4150-762 Porto</wicri:noRegion></affiliation></author><author><name sortKey="Vauclair, S" sort="Vauclair, S" uniqKey="Vauclair S" first="S." last="Vauclair">S. Vauclair</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Institut de Recherche en Astrophysique et Planetologie, Universite de Toulouse UPS-OMP/CNRS, 14 Av. Édouard Belin</s1><s2>31400 Toulouse</s2><s3>FRA</s3><sZ>4 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>10 aut.</sZ><sZ>15 aut.</sZ><sZ>20 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></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>Algorithms</term><term>Astroseismology</term><term>Data analysis</term><term>Optimization</term><term>Oscillation frequency</term><term>Probability density</term><term>Radial velocity</term><term>Solar pulsations</term><term>Spectral analysis</term><term>Star models</term><term>Sun</term><term>Time series</term><term>p mode</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Mode p</term><term>Soleil</term><term>Astéroséismologie</term><term>Série temporelle</term><term>Fréquence oscillation</term><term>Analyse spectrale</term><term>Algorithme</term><term>Densité probabilité</term><term>Optimisation</term><term>Pulsation solaire</term><term>Modèle stellaire</term><term>Vitesse radiale</term><term>Analyse donnée</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Solar twins have been a focus of attention for more than a decade, because their structure is extremely close to that of the Sun. Today, thanks to high-precision spectrometers, it is possible to use asteroseismology to probe their interiors. Our goal is to use time series obtained from the HARPS spectrometer to extract the oscillation frequencies of 18 Sco, the brightest solar twin. We used the tools of spectral analysis to estimate these quantities. We estimate 52 frequencies using an MCMC algorithm. After examination of their probability densities and comparison with results from direct MAP optimization, we obtain a minimal set of 21 reliable modes. The identification of each pulsation mode is straightforwardly accomplished by comparing to the well-established solar pulsation modes. We also derived some basic seismic indicators using these values. These results offer a good basis to start a detailed seismic analysis of 18 Sco using stellar models.</div></front></TEI><affiliations><list><country><li>Australie</li><li>Brésil</li><li>Danemark</li><li>France</li><li>Portugal</li><li>Royaume-Uni</li><li>Suisse</li></country><region><li>Angleterre</li><li>Midi-Pyrénées</li><li>Midlands de l'Ouest</li><li>Occitanie (région administrative)</li></region><settlement><li>Birmingham</li><li>Toulouse</li></settlement><orgName><li>Université de Birmingham</li></orgName></list><tree><country name="Portugal"><noRegion><name sortKey="Bazot, M" sort="Bazot, M" uniqKey="Bazot M" first="M." last="Bazot">M. Bazot</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="Dumusque, X" sort="Dumusque, X" uniqKey="Dumusque X" first="X." last="Dumusque">X. Dumusque</name><name sortKey="Monteiro, M J P F G" sort="Monteiro, M J P F G" uniqKey="Monteiro M" first="M. J. P. F. G." last="Monteiro">M. J. P. F. G. Monteiro</name><name sortKey="Monteiro, M J P F G" sort="Monteiro, M J P F G" uniqKey="Monteiro M" first="M. J. P. F. G." last="Monteiro">M. J. P. F. G. Monteiro</name><name sortKey="Santos, N C" sort="Santos, N C" uniqKey="Santos N" first="N. C." last="Santos">N. C. Santos</name><name sortKey="Santos, N C" sort="Santos, N C" uniqKey="Santos N" first="N. C." last="Santos">N. C. Santos</name><name sortKey="Sousa, S" sort="Sousa, S" uniqKey="Sousa S" first="S." last="Sousa">S. Sousa</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="Broomhall, A M" sort="Broomhall, A M" uniqKey="Broomhall A" first="A.-M." last="Broomhall">A.-M. Broomhall</name></country><country name="France"><region name="Occitanie (région administrative)"><name sortKey="Carfantan, H" sort="Carfantan, H" uniqKey="Carfantan H" first="H." last="Carfantan">H. Carfantan</name></region><name sortKey="Dintrans, B" sort="Dintrans, B" uniqKey="Dintrans B" first="B." last="Dintrans">B. Dintrans</name><name sortKey="Petit, P" sort="Petit, P" uniqKey="Petit P" first="P." last="Petit">P. Petit</name><name sortKey="Theado, S" sort="Theado, S" uniqKey="Theado S" first="S." last="Theado">S. Theado</name><name sortKey="Van Grootel, V" sort="Van Grootel, V" uniqKey="Van Grootel V" first="V." last="Van Grootel">V. Van Grootel</name><name sortKey="Vauclair, S" sort="Vauclair, S" uniqKey="Vauclair S" first="S." last="Vauclair">S. Vauclair</name></country><country name="Australie"><noRegion><name sortKey="Bedding, T R" sort="Bedding, T R" uniqKey="Bedding T" first="T. R." last="Bedding">T. R. Bedding</name></noRegion></country><country name="Suisse"><noRegion><name sortKey="Dumusque, X" sort="Dumusque, X" uniqKey="Dumusque X" first="X." last="Dumusque">X. Dumusque</name></noRegion></country><country name="Danemark"><noRegion><name sortKey="Arentoft, T" sort="Arentoft, T" uniqKey="Arentoft T" first="T." last="Arentoft">T. Arentoft</name></noRegion><name sortKey="Christensen Dalsgaard, J" sort="Christensen Dalsgaard, J" uniqKey="Christensen Dalsgaard J" first="J." last="Christensen-Dalsgaard">J. Christensen-Dalsgaard</name><name sortKey="Kjeldsen, H" sort="Kjeldsen, H" uniqKey="Kjeldsen H" first="H." last="Kjeldsen">H. Kjeldsen</name></country><country name="Brésil"><noRegion><name sortKey="Castro, M" sort="Castro, M" uniqKey="Castro M" first="M." last="Castro">M. Castro</name></noRegion><name sortKey="Do Nascimento, J D Jr" sort="Do Nascimento, J D Jr" uniqKey="Do Nascimento J" first="J.-D. Jr" last="Do Nascimento">J.-D. Jr Do Nascimento</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Asie/explor/AustralieFrV1/Data/Main/Exploration
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 005C83 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 005C83 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Wicri/Asie
|area= AustralieFrV1
|flux= Main
|étape= Exploration
|type= RBID
|clé= Pascal:12-0411767
|texte= Estimating the p-mode frequencies of the solar twin 18 Scorpii
}}
| This area was generated with Dilib version V0.6.33. |  |