2012A&A...543A..96E


Query : 2012A&A...543A..96E

2012A&A...543A..96E - Astronomy and Astrophysics, volume 543A, 96-96 (2012/7-1)

Precise modeling of the exoplanet host star and CoRoT main target HD 52265.

ESCOBAR M.E., THEADO S., VAUCLAIR S., BALLOT J., CHARPINET S., DOLEZ N., HUI-BON-HOA A., VAUCLAIR G., GIZON L., MATHUR S., QUIRION P.O. and STAHN T.

Abstract (from CDS):

This paper presents a detailed and precise study of the characteristics of the exoplanet host star and CoRoT main target HD 52265, derived from asteroseismic studies. We compare our results with previous estimates, and provide a comprehensive summary and discussion. Our basic method is similar to that previously used by the Toulouse group for solar-type stars. Models are computed with various initial chemical compositions and the computed p-mode frequencies are compared with the observed ones. All models include atomic diffusion and we discuss the importance of radiative accelerations. Several tests are used, including the usual frequency combinations and the fits to the echelle diagrams. Possible surface effects are introduced and discussed. Automatic codes are also used to identify the best-fit model for this star (SEEK and AMP) and their results are compared with those obtained with the detailed method. We find precise results for the mass, radius, and age of this star, as well as its effective temperature and luminosity. We also estimate the initial helium abundance. These results are important for the characterization of the star-planet system.

Abstract Copyright:

Journal keyword(s): planet-star interactions - stars: interiors - stars: evolution - stars: late-type - stars: fundamental parameters - asteroseismology

Simbad objects: 6

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Number of rows : 6
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 * iot Hor PM* 02 42 33.4666679022 -50 48 01.055138166   5.97 5.40     F8V 377 1
2 HD 52265 PM* 07 00 18.0357115416 -05 22 01.780929120   6.845 6.282     G0V 315 1
3 * mu. Ara PM* 17 44 08.7031414872 -51 50 02.591603160   5.85 5.15     G3IV-V 507 2
4 Kepler-1b Pl 19 07 14.0379171930 +49 18 59.090895318           ~ 313 2
5 BD+47 2846 Er* 19 28 59.3538826128 +47 58 10.217007804   10.97 10.48     F6V 289 2
6 BD+47 2936 EB* 19 50 50.2472976936 +48 04 51.101390496       8.8   K4V 269 2

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2023.02.01-19:49:50

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