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

F. Anders 1 C. Chiappini 1 T. S. Rodrigues 2 A. Miglio 3 J. Montalban 3 B. Mosser 4 L. Girardi 2 M. Valentini 1 A. Noels 5 T. Morel J. A. Johnson 6 M. Schultheis 7 F. Baudin 8 R. de Assis Peralta 4 S. Hekker 9 N. Themessl T. Kallinger 10 R. A. Garcia 11 S. Mathur 12 A. Baglin 4 B. X. Santiago M. Martig 13 I. Minchev 1 M. Steinmetz 14 L. N. da Costa M. A. G. Maia C. Allende Prieto K. Cunha T. C. Beers 15 C. Epstein A. E. García Pérez D. A. A García-Hernández 16 P. Harding J. Holtzman S. R. Majewski Sz. Mészáros D. Nidever K. Pan M. Pinsonneault 17 R. P. Schiavon D. P. Schneider 18 M. D. Shetrone K. Stassun O. Zamora G. Zasowski A. Johnson R. de Assis Peralta 4 A. Maia C. Allende Prieto 19 C. Beers A. García R. Majewski 
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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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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