p-mode frequencies in solar-like stars : I. Procyon A

M. Martic; J. -C. Lebrun; T. Appourchaux; S. G. Korzennik

doi:10.1051/0004-6361:20034574

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arXiv · astro-ph/0403035

p-mode frequencies in solar-like stars : I. Procyon A

M. Martic·J. -C. Lebrun·T. Appourchaux·S. G. Korzennik

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Abstract

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 lines pectroscopy, we have studied four stars (alfaCMi, etaCas A, zetaHer A and betaVir). We present here new results from two-site observations of Procyon A acquired over twelve nights in 1999. Oscillation frequencies for l=1 and l=0 (or 2) p-modes are detected in the power spectra of these Doppler shift measurements. A frequency analysis points out the dificulties of the classical asymptotic theory in representing the p-mode spectrum of Procyon A.

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M. Martic, J. -C. Lebrun, T. Appourchaux, S. G. Korzennik. 2004-03-01. p-mode frequencies in solar-like stars : I. Procyon A. https://doi.org/10.1051/0004-6361%3A20034574

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