Published 2014
| Version v1
Journal article
Seismic analysis of HD 43587Aa, a solar-like oscillator in a multiple system
Creators
- Boumier, P.
- Benomar, O.
- Baudin, F.
- Verner, G.
- Appourchaux, T.
- Lebreton, Y.
- Gaulme, P.
- Chaplin, W.
- Garcia, R. A.
- Hekker, S.
- Regulo, C.
- Salabert, D.
- Stahn, T.
- Elsworth, Y.
- Gizon, Laurent
- Hall, M.
- Mathur, S.
- Michel, E.
- Morel, T.
- Mosser, B.
- Poretti, E.
- Rainer, M.
- Roxburgh, I.
- Nascimento, J. -D.
- Samadi, R.
- Auvergne, M.
- Chaintreuil, S.
- Baglin, A.
- Catala, C.
Contributors
Others:
- Institut d'astrophysique spatiale (IAS) ; Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National d'Études Spatiales [Paris] (CNES)
- Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information (CEA-LETI) ; Direction de Recherche Technologique (CEA) (DRT (CEA)) ; Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)
- Galaxies, Etoiles, Physique, Instrumentation (GEPI) ; Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris ; Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)
- Institut de Physique de Rennes (IPR) ; Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS)
- Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA) ; Commissariat à l'énergie atomique et aux énergies alternatives (CEA)
- School of Physics and Astronomy ; University of Birmingham [Birmingham]
- Joseph Louis LAGRANGE (LAGRANGE) ; Université Nice Sophia Antipolis (1965 - 2019) (UNS) ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS)
- Insituto Geofísico ; Escuela Politécnica Nacional (EPN)
- Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA) ; Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris ; Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)
- Université de Liège
- INAF - Osservatorio Astronomico di Brera (OAB) ; Istituto Nazionale di Astrofisica (INAF)
Description
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. Aims. We undertake a preliminary investigation of the internal structure of HD 43587Aa. Methods. We carried out a seismic analysis of the star, using maximum likelihood estimators and Markov chain Monte Carlo methods. 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. 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.
Abstract
International audienceAdditional details
Identifiers
- URL
- https://hal.science/hal-01063262
- URN
- urn:oai:HAL:hal-01063262v1
Origin repository
- Origin repository
- UNICA