Extraction of the convective zone extension from solar-like stars
Abstract
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.
- Publication:
-
Stellar Structure and Habitable Planet Finding
- Pub Date:
- January 2004
- Bibcode:
- 2004ESASP.538..265B
- Keywords:
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- Stars: Convection;
- Oscillations