p-mode frequencies in solar-like stars. I. Procyon A
p-mode frequencies in solar-like stars. I. Procyon A
复制标题
类太阳恒星中的 p 模频率。
DOI:
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发表时间:
2004
期刊:
影响因子:
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通讯作者:
S. Korzennik
中科院分区:
文献类型:
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作者:
M. Martić;J. Lebrun;T. Appourchaux;S. Korzennik
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 ( α CMi, η Cas A, ζ Her A and β Vir). We present here new results from 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.