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Asteroseismology for “à la carte” stellar age-dating and weighing: Age and mass of the CoRoT exoplanet host HD 52265

Astronomy and astrophysics (Berlin), 2014-09, Vol.569, p.1-24 [Peer Reviewed Journal]

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Title:
Asteroseismology for “à la carte” stellar age-dating and weighing: Age and mass of the CoRoT exoplanet host HD 52265
Author: Lebreton, Y ; Goupil, M J
Subjects: Accuracy ; Age ; Astronomy ; Oscillations ; Stellar age ; Stellar oscillations ; Weighing
Is Part Of: Astronomy and astrophysics (Berlin), 2014-09, Vol.569, p.1-24
Description: In the context of the space missions CoRoT, Kepler, Gaia, TESS, and PLATO, precise and accurate stellar ages, masses, and radii are of paramount importance. We aim at quantifying how detailed stellar modelling can improve the accuracy and precision on age and mass of individual stars. To that end, we adopt a multifaceted approach where we carefully examine how the number of observational constraints as well as the uncertainties on observations and on model input physics affect the results of age-dating and weighing. We demonstrate that asteroseismology allows us to substantially improve the age accuracy that can be achieved with other methods. We emphasize that the knowledge of the mean properties of stellar oscillations -- such as the large frequency separation -- is not enough to derive accurate ages. Our results emphasize the importance of precise classical stellar parameters and oscillation frequencies such as will be obtained by the Gaia and PLATO missions.
Language: English
Identifier: ISSN: 0004-6361
EISSN: 1432-0746
DOI: 10.1051/0004-6361/201423797
Source: Alma/SFX Local Collection

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