Reference : Solar-like oscillations in distant stars as seen by CoRoT : the special case of HD 42...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/160873
Solar-like oscillations in distant stars as seen by CoRoT : the special case of HD 42618, a solar sister
English
Barban, C. [LESIA, CNRS UMR 8109, Observatoire de Paris, Université Pierre et Marie Curie, Université Denis Diderot, France ;]
Deheuvels, S. [CNRS, Institut de Recherche en Astrophysique et Planétologie, Toulouse, France ; Université de Toulouse, UPS-OMP, IRAP, France]
Goupil, M. J. [LESIA, CNRS UMR 8109, Observatoire de Paris, Université Pierre et Marie Curie, Université Denis Diderot, France]
Lebreton, Y. [Observatoire de Paris, GEPI, CNRS UMR 8111, France ; Institut de Physique de Rennes, Université de Rennes 1, CNRS UMR 6251, France]
Mathur, S. [High Altitude Observatory, NCAR, PO Box 3000, Boulder, CO 80307, USA ; Laboratoire AIM, CEA/DSM-CNRS-Université Paris Diderot; IRFU/SAp, Centre de Saclay, France]
Michel, E. [> >]
Morel, Thierry mailto [Université de Liège - ULiège > > GAPHE : Astrophysique observationnelle (sol et espace) >]
Ballot, J. [CNRS, Institut de Recherche en Astrophysique et Planétologie, Toulouse, France ; Université de Toulouse, UPS-OMP, IRAP, France]
Baudin, F. [Institut d'Astrophysique Spatiale, UMR8617, CNRS, Université Paris XI, France]
Belkacem, K. [LESIA, CNRS UMR 8109, Observatoire de Paris, Université Pierre et Marie Curie, Université Denis Diderot, France]
Benomar, O. [Sydney Institute for Astronomy (SIfA), School of Physics, University of Sydney, Australia]
Boumier, P. [Institut d'Astrophysique Spatiale, UMR8617, CNRS, Université Paris XI, France]
Davies, G. R. [Laboratoire AIM, CEA/DSM-CNRS-Université Paris Diderot; IRFU/SAp, Centre de Saclay, France ; School of Physics and Astronomy, University of Birmingham, UK]
García, R. A. [Laboratoire AIM, CEA/DSM-CNRS-Université Paris Diderot; IRFU/SAp, Centre de Saclay, France]
Hall, M. P. [Jeremiah Horrocks Institute of Astrophysics, University of Central Lancashire, Preston PR1 2HE, UK]
Mosser, B. [LESIA, CNRS UMR 8109, Observatoire de Paris, Université Pierre et Marie Curie, Université Denis Diderot, France]
Poretti, E. [INAF Osservatorio Astronomico di Brera, Merate, Italy]
Régulo, C. [Instituto de Astrofísica de Canarias, Tenerife, Spain ; Departamento de Astrofísica, Universidad de La Laguna, Tenerife, Spain]
Roxburgh, I. [Queen Mary University of London, Astronomy Unit, UK]
Samadi, R. [LESIA, CNRS UMR 8109, Observatoire de Paris, Université Pierre et Marie Curie, Université Denis Diderot, France]
Verner, G. [Queen Mary University of London, Astronomy Unit, UK]
1-Jun-2013
Journal of Physics. Conference Series
440
2030
No
International
1742-6588
1742-6596
[en] We report the observations of a main-sequence star, HD 42618 (T[SUB]eff[/SUB] = 5765 K, G3V) by the space telescope CoRoT. This is the closest star to the Sun ever observed by CoRoT in term of its fundamental parameters. Using a preliminary version of CoRoT light curves of HD 42618, p modes are detected around 3.2 mHz associated to l = 0, 1 and 2 modes with a large spacing of 142 μHz. Various methods are then used to derive the mass and radius of this star (scaling relations from solar values as well as comparison between theoretical and observationnal frequencies) giving values in the range of (0.80 - 1.02)M[SUB]solar[/SUB] and (0.91 - 1.01)R[SUB]solar[/SUB]. A preliminary analysis of l = 0 and 1 modes allows us also to study the amount of penetrative convection at the base of the convective envelope.
http://hdl.handle.net/2268/160873
10.1088/1742-6596/440/1/012030
http://adsabs.harvard.edu/abs/2013JPhCS.440a2030B

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Open access
JPhCS_440_012030.pdfPublisher postprint768.7 kBView/Open

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.