Extraction of the convective zone extension from solar-like stars

Details Extraction of the convective zone extension from solar-like stars Extraction of the convective zone extension from solar-like stars

Jan 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.538..265b&link_type=abstract

In: Second Eddington Workshop: Stellar structure and habitable planet finding, 9 - 11 April 2003, Palermo, Italy. Edited by F. F

Physics

1

Stars: Convection, Oscillations

Scientific paper

The aim of this study is to estimate the quality of the asteroseismic observations for 150 days of photometric measurements. We have used simulated data and VIRGO time series as a good example of a one-solar-mass Eddington target. From the extracted-mode frequencies we have tried to measure the position of the base of the convective zone (BCZ). We have studied the two following cases: in the first one, the observation is done during five consecutive months; in the second, we use five non-consecutive one-month observations. The effects of the stochastic excitation and the stellar activity on the frequency determination are studied and discussed. In this framework we are also developing a new semi-automatic algorithm to extract low-degree mode parameters without any a priori.

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