p-mode frequencies in solar-like stars : I. Procyon A
Astrophysics
2009-11-10 v1
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.
Keywords
Cite
@article{arxiv.astro-ph/0403035,
title = {p-mode frequencies in solar-like stars : I. Procyon A},
author = {M. Martic and J. -C. Lebrun and T. Appourchaux and S. G. Korzennik},
journal= {arXiv preprint arXiv:astro-ph/0403035},
year = {2009}
}