摘要：With the advent of the space missions CoRoT and Kepler, it has recently
become feasible to determine precise asteroseismic masses and relative ages for large
samples of red giant stars. We present the CoRoGEE dataset, obtained from CoRoT light
curves for 606 red giants in two fields of the Galactic disc that have been co-observed by
the Apache Point Observatory Galactic Evolution Experiment (APOGEE). We 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
≲2% in distance,
~4% in radius,
~9% in mass and
~25% in age. We also
assessed systematic age uncertainties stemming from different input physics and mass loss.
We discuss the correlation between ages and chemical abundance patterns of field stars
over a broad radial range of the Milky Way disc (5 kpc
关键词：asteroseismology;stars: fundamental parameters;Galaxy: abundances;Galaxy: disk;Galaxy: evolution
