Poster abstract details

CoRoT observations of solar-like oscillations in the overmetallic cool dwarf HD52265

J. Ballot, L. Gizon, R. Samadi, G. Vauclair, T. Appourchaux, M. Auvergne, A. Baglin, F. Baudin, O. Benomar, H. Bruntt, T.L. Campante, C. Catala, W.J. Chaplin, S. Deheuvels, N. Dolez, R.A. Garc�a, P. Gaulme, S. Mathur, E. Michel, B. Mosser, C. R�gulo, I.W. Roxburgh, D. Salabert, T. Stahn, G.A. Verner, and the rest of CoRoT data analysis team

Abstract

The G0V star HD52265 is one of the coolest main-sequence star observed
by CoRoT. We present the analysis of its light curve measured by CoRoT
for 117 days from 11/13/2008 to 3/11/2009. The power spectrum exhibits a
very clear comb pattern that we doubtlessly identify as p modes of
degrees l=0,1 and 2 for around ten consecutive radial orders. We also
find a signature of the surface rotation at very low frequencies. We
discuss in this poster the p-mode characteristics (frequency, power,
lifetime, rotational splitting...) we have extracted using different
fitting techniques.