| Issue |
A&A
Volume 418, Number 1, April IV 2004
|
|
|---|---|---|
| Page(s) | 295 - 303 | |
| Section | Stellar structure and evolution | |
| DOI | https://doi.org/10.1051/0004-6361:20034574 | |
| Published online | 02 April 2004 | |
p-mode frequencies in solar-like stars*
I. Procyon A
1
Service d'Aéronomie du CNRS, BP 3, 91371 Verrières le Buisson, France
2
Science Payload and Advanced Concept Office of ESA, ESTEC, AG Noordwijk, 2200, The Netherlands
3
Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA-02138, USA
Corresponding author: M. Martić, milena@aerov.jussieu.fr
Received:
24
October
2003
Accepted:
27
January
2004
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 
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.
Key words: stars: oscillations (including pulsations) / stars: individual: Procyon A / techniques: radial velocities
© ESO, 2004
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