Differential population studies using asteroseismology: solar-like oscillating giants in CoRoT fields LRc01 and LRa01

Abstract. Solar-like oscillating giants observed by the space-borne satellites CoRoT and Kepler can be used as key tracers of stellar populations in the Milky Way. When combined with additional photometric/spectroscopic constraints, the pulsation spectra of solar-like oscillating giant stars not only reveal their radii, and hence distances, but also provide well-constrained estimates of their masses, which can be used as proxies for the ages of these evolved stars. In this contribution we provide supplementary material to the comparison we presented in Miglio et al. (2013) between populations of giants observed by CoRoT in the fields designated LRc01 and LRa01. This contribution is organised as follows. In §1, we briefly recall how global stellar properties (mass, radius, distance) are determined using average seismic constraints, while we refer to [1] for a general motivation behind this study, the methods adopted, and main results obtained. In §2 we present the data used in this study, along with independent verifications of the asteroseismic radius and mass determination available in the literature (§2.1). Comparisons between the properties of the population observed in LRa01 and LRc01 are presented in §3. Finally, a comparison of observed and syntheti