Journal
ASTRONOMY & ASTROPHYSICS
Volume 418, Issue 1, Pages 295-303Publisher
EDP SCIENCES S A
DOI: 10.1051/0004-6361:20034574
Keywords
stars : oscillations (including pulsations); stars : individual : Procyon A; techniques : radial velocities
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As a part of an on-going program to explore the signature of p-modes in solar-like stars by means of high-resolution absorption line spectroscopy, we have Studied four stars (alphaCMi, etaCas A, zetaHer A and betaVir). We present here new results front two-site observations of Procyon A acquired over twelve nights in 1999. Oscillation frequencies for l = 1 and 0 (or 2) p-modes are detected in the power spectra of these Doppler shift measurements. A frequency analysis points out the difficulties of the classical asymptotic theory in representing the p-mode spectrum of Procyon A.
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