Poster abstract details

Red giant populations analyzed with CoRoT
B. Mosser, C. Barban, F. Baudin, K. Belkacem, M.-J. Goupil, S. Hekker, A. Miglio, T. Morel, R. Samadi, J. De Ridder

Abstract

We have performed a massive analysis of about 2000 red giants observed with CoRoT in the direction of the Galactic center and in the opposite direction. With the Envelope AutoCorrelation Function, we have determined the parameters describing the solar-like oscillation spectra of these giants. This allows us to examine in detail the scaling laws between the frequencies characterizing the spectra (large separation, maximum amplitude frequency, mode envelope) in an unbiased data set with large separations as low as 0.7 $\mu$Hz. We also measure the fundamental parameters of the stars in the red clump, test the influence of metallicity and compare the results with synthetic populations.