# Galactic archaeology with asteroseismology and spectroscopy: Red giants observed by CoRoT and APOGEE

Abstract : With the advent of the space missions CoRoT and Kepler, it has become feasible to determine precise asteroseismic masses and ages for large samples of red-giant stars. In this paper, we present the CoRoGEE dataset -- obtained from CoRoT lightcurves for 606 red giant stars in two fields of the Galactic disc which have been co-observed for an ancillary project of APOGEE. We have used the Bayesian parameter estimation code PARAM to calculate distances, extinctions, masses, and ages for these stars in a homogeneous analysis, resulting in relative statistical uncertainties of $\sim2\%$ in distance, $\sim4\%$ in radius, $\sim9\%$ in mass and $\sim25\%$ in age. We also assess systematic age uncertainties due to different input physics and mass loss. We discuss the correlation between ages and chemical abundance patterns of field stars over a large radial range of the Milky Way's disc (5 kpc \$
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https://hal-obspm.ccsd.cnrs.fr/obspm-02268073
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Submitted on : Tuesday, August 20, 2019 - 11:58:34 AM
Last modification on : Saturday, September 19, 2020 - 4:49:14 AM

### Citation

F. Anders, C. Chiappini, T. S. Rodrigues, A. Miglio, J. Montalban, et al.. Galactic archaeology with asteroseismology and spectroscopy: Red giants observed by CoRoT and APOGEE. Astronomy and Astrophysics - A&A, EDP Sciences, 2017, 597, pp.A30. ⟨10.1051/0004-6361/201527204⟩. ⟨obspm-02268073⟩

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