methods: data analysis; stars: interiors; stars: late-type; stars: oscillations
Abstract :
[en] We report on the first asteroseismic analysis of solar-type stars observed by Kepler. Observations of three G-type stars, made at one-minute cadence during the first 33.5 days of science operations, reveal high signal-to-noise solar-like oscillation spectra in all three stars: About 20 modes of oscillation can clearly be distinguished in each star. We discuss the appearance of the oscillation spectra, including the presence of a possible signature of faculae, and the presence of mixed modes in one of the three stars.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Karoff, C.; School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK ; Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, Denmark
Chaplin, W. J.; School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
Appourchaux, T.; Institut d'Astrophysique Spatiale, Université Paris XI-CNRS (UMR8617), Batiment 121, 91405 Orsay Cedex, France
Elsworth, Y.; School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
Garcia, R.; Université Paris Diderot - Paris 7
Houdek, G.; Institute of Astronomy, University of Vienna, A-1180 Vienna, Austria
Metcalfe, T. S.; High Altitude Observatory and Scientific Computing Division, National Center for Atmospheric Research, Boulder, CO 80307, USA
Molenda-Żakowicz, J.; Astronomical Institute, University of Wroclaw, ul. Kopernika, 11, 51-622 Wroclaw, Poland
Monteiro, M J P F G; Centro de Astrofísica and DFA-Faculdade de Ciências, Universidade do Porto, Ruas das Estrelas, 4150-762 Porto, Portugal
Thompson, M. J.; School of Mathematics and Statistics, University of Sheffield, Hounsfield Road, Sheffield S3 7RH, UK
Christensen-Dalsgaard, J.; Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, Denmark
Gilliland, R. L.; Space Telescope Science Institute, Baltimore, MD 21218, USA
Kjeldsen, H.; Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, Denmark
Basu, S.; Department of Astronomy, Yale University, P.O. Box 208101, New Haven, CT 06520-8101, USA
Bedding, T. R.; Sydney Institute for Astronomy (SIfA), School of Physics, University of Sydney, NSW 2006, Australia
Campante, T. L.; Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, Denmark ; Centro de Astrofísica and DFA-Faculdade de Ciências, Universidade do Porto, Ruas das Estrelas, 4150-762 Porto, Portugal
Eggenberger, P.; Geneva Observatory, University of Geneva, Maillettes 51, 1290 Sauverny, Switzerland
Fletcher, S. T.; Materials Engineering Research Institute, Faculty of Arts, Computing, Engineering and Sciences, Sheffield Hallam University, Sheffield, S1 1WB, UK
Gaulme, P.; Institut d'Astrophysique Spatiale, Université Paris XI-CNRS (UMR8617), Batiment 121, 91405 Orsay Cedex, France
Handberg, R.; Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, Denmark
Hekker, S.; School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
Martic, M.; LATMOS-IPSL, CNRS, Université de Versailles Saint-Quentin, 11, boulevard d'Alembert, 78280 Guyancourt, France
Mathur, S.; High Altitude Observatory and Scientific Computing Division, National Center for Atmospheric Research, Boulder, CO 80307, USA
Mosser, B.; LESIA, CNRS, Université Pierre et Marie Curie, Université, Denis Diderot, Observatoire de Paris, 92195 Meudon Cedex, France
Regulo, C.; Departamento de Astrofísica, Universidad de La Laguna, E-38206 La Laguna, Tenerife, Spain ; Instituto de Astrofísica de Canarias, E-38200 La Laguna, Tenerife, Spain
Roxburgh, I. W.; Queen Mary University of London, Astronomy Unit, Mile End Road, London E1 4NS, UK
Salabert, D.; Departamento de Astrofísica, Universidad de La Laguna, E-38206 La Laguna, Tenerife, Spain ; Instituto de Astrofísica de Canarias, E-38200 La Laguna, Tenerife, Spain
Stello, D.; Sydney Institute for Astronomy (SIfA), School of Physics, University of Sydney, NSW 2006, Australia
Verner, G. A.; Queen Mary University of London, Astronomy Unit, Mile End Road, London E1 4NS, UK
Belkacem, Kevin ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique stellaire théorique et astérosismologie
Mathis, S.; Laboratoire AIM, CEA/DSM-CNRS-Université Paris Diderot, IRFU/SAp Centre de Saclay, F-91191 Gif-sur-Yvette, France
Noels-Grötsch, Arlette ; Département d'Astrophysique, Géophysique et Océanographie (AGO), Université de Liége, Allée du 6 Aoüt 17 4000 Liége 1, Belgium
Noyes, R. W.; Smithsonian Astrophysical Observatory, Cambridge, MA, USA
Roca Cortes, T.; Departamento de Astrofísica, Universidad de La Laguna, E-38206 La Laguna, Tenerife, Spain ; Instituto de Astrofísica de Canarias, E-38200 La Laguna, Tenerife, Spain
Roth, M.; Kiepenheuer-Institut für Sonnenphysik, Schöneckstr. 6, 79104 Freiburg, Germany
Sato, K. H.; Laboratoire AIM, CEA/DSM-CNRS, Université Paris 7 Diderot, IRFU/SAp-SEDI, Centre de Saclay, 91191, Gif-sur-Yvette, France
Schmitt, J.; Observatoire de Haute-Provence, F-04870, St.Michel l'Observatoire, France
Suran, M. D.; Astronomical Institute of the Romanian Academy, Str. Cutitul de Argint, 5, RO 40557, Bucharest, Romania
Trampedach, R.; JILA, University of Colorado, 440 UCB, Boulder, CO 80309-0440, USA
Uytterhoeven, K.; Laboratoire AIM, CEA/DSM-CNRS, Université Paris 7 Diderot, IRFU/SAp-SEDI, Centre de Saclay, 91191, Gif-sur-Yvette, France
Ventura, R.; INAF Osservatorio Astrofisico di Catania, Via S. Sofia 78, 95123, Catania, Italy
