asteroseismology; stars: individual: HD 43587Aa; binaries: general; stars: solar-type; methods: data analysis
Abstract :
[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.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
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 ; 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)
Chen, Y. Q., Nissen, P. E., Zhao, G., Zhang, H. W., & Benoni, T. 2000, A&AS, 141, 491
da Silva, L., Girardi, L., Pasquini, L. et al., 2006, A&A, 458, 609
Deheuvels, S., Bruntt, H., Michel, E. et al., 2010, A&A, 515, A87
Feltzing, S., & Gonzalez, G. 2001, A&A, 367, 253
Ferguson, J. W., Alexander, D. R., Allard, F. et al., 2005, ApJ, 623, 585
Formicola, A., Imbriani, G., Costantini, H. et al., 2004, Phys. Lett. B, 591, 61
Frandsen, S., Lehmann, H., Hekker, S. et al., 2013, A&A, 556, A138
Fuhrmann, K. 2011, MNRAS, 414, 2893
Gai, N., Basu, S., Chaplin, W. J., & Elsworth, Y. 2011, ApJ, 730, 63
García, R. A., Régulo, C., Samadi, R. et al., 2009, A&A, 506, 41
Gaulme, P., Deheuvels, S., Weiss, W. W. et al., 2010, A&A, 524, A47
Gaulme, P., McKeever, J., Rawls, M. L. et al., 2013, ApJ, 767, 82
Girardi, L., Bressan, A., Bertelli, G., & Chiosi, C. 2000, A&AS, 141, 371
Grevesse, N., & Noels, A. 1993, in Origin and Evolution of the Elements, eds. N. Prantzos, E. Vangioni-Flam, & M. Casse, 15
Gruberbauer, M., Kallinger, T., Weiss, W. W., & Guenther, D. B. 2009, A&A, 506, 1043
Hall, J. C., Henry, G. W., Lockwood, G. W., Skiff, B. A., & Saar, S. H. 2009, AJ, 138, 312
Handberg, R., & Campante, T. L. 2011, A&A, 527, A56
Hartkopf, W. I., Tokovinin, A., & Mason, B. D. 2012, AJ, 143, 42
Hekker, S., Debosscher, J., Huber, D. et al., 2010, ApJ, 713, L187
Hekker, S., Elsworth, Y., Mosser, B. et al., 2013, A&A, 556, A59
Iglesias, C. A., & Rogers, F. J. 1996, ApJ, 464, 943
Katoh, N., Itoh, Y., Toyota, E., & Sato, B. 2013, AJ, 145, 41
Kjeldsen, H., & Bedding, T. R. 1995, A&A, 293, 87
Kjeldsen, H., Bedding, T. R., & Christensen-Dalsgaard, J. 2008, ApJ, 683, L175
Lebreton, Y. 2012, in Progress in Solar/Stellar Physics with Helio-and Asteroseismology, eds. H. Shibahashi, M. Takata, & A. E. Lynas-Gray, ASP Conf. Ser., 462, 469
Lepine, S., & Shara, M. M. 2005, VizieR Online Data Catalog: I/298
Lubin, D., Tytler, D., & Kirkman, D. 2010, ApJ, 716, 766
Marques, J. P. & Goupil, M. J. 2013, in Lect. Notes Phys., eds. M. Goupil, K. Belkacem, C. Neiner, F. Lignières, & J. J. Green (Berlin: Springer Verlag), 865, 75
Mathur, S., García, R. A., Catala, C. et al., 2010, A&A, 518, A53
Mathur, S., Handberg, R., Campante, T. L. et al., 2011, ApJ, 733, 95
Mathur, S., Bruntt, H., Catala, C. et al., 2013, A&A, 549, A12
Mazeh, T. 2008, in EAS Publ. Ser. 29, eds. M.-J. Goupil, & J.-P. Zahn, 1
Meléndez, J., Ramírez, I., Casagrande, L. et al., 2010, Ap&SS, 328, 193
Meléndez, J., Bergemann, M., Cohen, J. G. et al., 2012, A&A, 543, A29
Mészáros, S., Holtzman, J., García Pérez, A. E. et al., 2013, AJ, 146, 133
Metcalfe, T. S., Chaplin, W. J., Appourchaux, T. et al., 2012 a, ApJ, 748, L10
Metcalfe, T. S., Mathur, S., Doǧan, G., & Woitaszek, M. 2012b, in Progress in Solar/Stellar Physics with Helio-and Asteroseismology, eds. H. Shibahashi, M. Takata, & A. E. Lynas-Gray, ASP Conf. Ser., 462, 213
Michaud, G., & Proffitt, C. R. 1993, in IAU Colloq. 137, Inside the Stars, eds. W. W. Weiss, & A. Baglin, ASP Conf. Ser., 40, 246
Michel, E., Baglin, A., Auvergne, M. et al., 2008, Science, 322, 558
Miglio, A., & Montalbán, J. 2005, A&A, 441, 615
Monroe, T. R., Meléndez, J., Ramírez, I. et al., 2013, ApJ, 774, L32
Morel, P., & Lebreton, Y. 2008, Ap&SS, 316, 61
Morel, T., Rainer, M., Poretti, E., Barban, C., & Boumier, P. 2013, A&A, 552, A42
Mosser, B., Baudin, F., Lanza, A. F. et al., 2009 a, A&A, 506, 245
Mosser, B., Michel, E., Appourchaux, T. et al., 2009 b, A&A, 506, 33
Mosser, B., Michel, E., Belkacem, K. et al., 2013, A&A, 550, A126
Pravdo, S. H., Shaklan, S. B., Wiktorowicz, S. J. et al., 2006, ApJ, 649, 389
Reddy, B. E., Tomkin, J., Lambert, D. L., & Allen de Prieto, C. 2003, MNRAS, 340, 304
Rogers, F. J., & Nayfonov, A. 2002, ApJ, 576, 1064
Roxburgh, I. W. 2009, A&A, 493, 185
Samadi, R., Fialho, F., Costa, J. E. S., et al. 2007 [arXiv:astro-ph/ 0703354]
Schröder, K.-P., Mittag, M., Pérez Martínez, M. I., Cuntz, M., & Schmitt, J. H. M. M. 2012, A&A, 540, A130
Scuflaire, R., Montalbán, J., Théado, S. et al., 2008, Ap&SS, 316, 149
Steffen, J. H., Fabrycky, D. C., Agol, E. et al., 2013, MNRAS, 428, 1077
Thévenin, F., Bigot, L., Kervella, P. et al., 2006, Mem. Soc. Astron. Ital., 77, 411
Valenti, J. A., & Fischer, D. A. 2005, ApJS, 159, 141
VandenBerg, D. A., & Clem, J. L. 2003, AJ, 126, 778
van Leeuwen, F. 2007, A&A, 474, 653
Vogt, S. S., Butler, R. P., Marcy, G. W. et al., 2002, ApJ, 568, 352
