Reference : Seismic analysis of HD 43587Aa, a solar-like oscillator in a multiple system
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/175805
Seismic analysis of HD 43587Aa, a solar-like oscillator in a multiple system
English
Boumier, P. [Institut d'Astrophysique Spatiale, CNRS, Université Paris Sud, UMR 8617, 91405, Orsay Cedex, France]
Benomar, O. [Sydney Institute for Astronomy (SIfA), School of Physics, University of Sydney, NSW, 2006, Sydney, Australia]
Baudin, F. [Institut d'Astrophysique Spatiale, CNRS, Université Paris Sud, UMR 8617, 91405, Orsay Cedex, France]
Verner, G. [Astronomy Unit, Queen Mary, University of London, Mile End Road, London, E1 4NS, UK]
Appourchaux, T. [Institut d'Astrophysique Spatiale, CNRS, Université Paris Sud, UMR 8617, 91405, Orsay Cedex, France]
Lebreton, Y. [GEPI, Observatoire de Paris, CNRS UMR 8111, 92195, Meudon, France; Institut de Physique de Rennes, Université de Rennes 1, CNRS UMR 6251, 35042, Rennes, France]
Gaulme, P. [New Mexico State University, Department of Astronomy, PO Box 30001, MSC 4500, Las Cruces, NM, USA]
Chaplin, W. [School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK]
García, R. A. [Laboratoire AIM, CEA/DSM-CNRS, Université Paris 7 Diderot, IRFU/Sap, Centre de Saclay, 91191, Gif-sur-Yvette, France]
Hekker, S. [Astronomical Institute "Anton Pannekoek", University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, the Netherlands; Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg 3, 37077, Göttingen, Germany]
Regulo, C. [Instituto de Astrofísica de Canarias, 38205 La Laguna, Tenerife, Spain; Universidad de La Laguna, Dpto de Astrofísica, 38206 La Laguna, Tenerife, Spain]
Salabert, D. [Université de Nice Sophia-Antipolis, CNRS, Observatoire de la Côte d'Azur, BP 4229, 06304, Nice Cedex 4, France]
Stahn, T. [Institut für Astrophysik, Georg-August-Universität Göttingen, 37077, Göttingen, Germany]
Elsworth, Y. [School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK]
Gizon, L. [Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg 3, 37077, Göttingen, Germany; Institut für Astrophysik, Georg-August-Universität Göttingen, 37077, Göttingen, Germany]
Hall, M. [Astronomy Unit, Queen Mary, University of London, Mile End Road, London, E1 4NS, UK]
Mathur, S. [High Altitude Observatory, NCAR, PO Box 3000, Boulder, CO, 80307, USA; Space Science Institute, 4750 Walnut Street Suite 205, Boulder, CO, 80301, USA]
Michel, Eric [> >]
Morel, Thierry mailto [Université de Liège - ULiège > > Groupe d'astrophysique des hautes énergies (GAPHE) >]
Mosser, B. [LESIA, Observatoire de Paris, CNRS, Université Paris 6, Université Paris 7, UMR 8109, 92195, Meudon Cedex, France]
Poretti, E. [INAF - Osservatorio Astronomico di Brera, via E. Bianchi 46, 23807, Merate, Italy]
Rainer, M. [INAF - Osservatorio Astronomico di Brera, via E. Bianchi 46, 23807, Merate, Italy]
Roxburgh, I. [Astronomy Unit, Queen Mary, University of London, Mile End Road, London, E1 4NS, UK]
do Nascimento, J.-D. [Institut d'Astrophysique Spatiale, CNRS, Université Paris Sud, UMR 8617, 91405, Orsay Cedex, France; Depart. de Física Teórica e Experimental, Univ. Federal do Rio Grande do Norte, CEP 59072-970, Natal, RN, Brazil]
Samadi, R. [LESIA, Observatoire de Paris, CNRS, Université Paris 6, Université Paris 7, UMR 8109, 92195, Meudon Cedex, France]
Auvergne, M. [LESIA, Observatoire de Paris, CNRS, Université Paris 6, Université Paris 7, UMR 8109, 92195, Meudon Cedex, France]
Chaintreuil, S. [LESIA, Observatoire de Paris, CNRS, Université Paris 6, Université Paris 7, UMR 8109, 92195, Meudon Cedex, France]
Baglin, A. [LESIA, Observatoire de Paris, CNRS, Université Paris 6, Université Paris 7, UMR 8109, 92195, Meudon Cedex, France]
Catala, C. [LESIA, Observatoire de Paris, CNRS, Université Paris 6, Université Paris 7, UMR 8109, 92195, Meudon Cedex, France)]
1-Apr-2014
Astronomy and Astrophysics
564
34
Yes
International
[en] asteroseismology ; stars: individual: HD 43587Aa ; binaries: general ; stars: solar-type ; methods: data analysis
[en] Context. The object HD 43587Aa is a G0V star observed during the 145-day LRa03 run of the COnvection, ROtation and planetary Transits space mission (CoRoT), for which complementary High Accuracy Radial velocity Planet Searcher (HARPS) spectra with S/N > 300 were also obtained. Its visual magnitude is 5.71, and its effective temperature is close to 5950 K. It has a known companion in a highly eccentric orbit and is also coupled with two more distant companions. <BR /> Aims: We undertake a preliminary investigation of the internal structure of HD 43587Aa. <BR /> Methods: We carried out a seismic analysis of the star, using maximum likelihood estimators and Markov chain Monte Carlo methods. <BR /> Results: We established the first table of the eigenmode frequencies, widths, and heights for HD 43587Aa. The star appears to have a mass and a radius slightly larger than the Sun, and is slightly older (5.6 Gyr). Two scenarios are suggested for the geometry of the star: either its inclination angle is very low, or the rotation velocity of the star is very low. <BR /> Conclusions: A more detailed study of the rotation and of the magnetic and chromospheric activity for this star is needed, and will be the subject of a further study. New high resolution spectrometric observations should be performed for at least several months in duration.
http://hdl.handle.net/2268/175805
10.1051/0004-6361/201322478
http://adsabs.harvard.edu/abs/2014A%26A...564A..34B

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