EDP Sciences
Free Access
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

A&A 418, 295-303 (2004)
DOI: 10.1051/0004-6361:20034574

p-mode frequencies in solar-like stars

I. Procyon A
M. Martic1, J.-C. Lebrun1, T. Appourchaux2 and S. G. Korzennik3

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

(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 ( $\alpha$ CMi, $\eta$ Cas A, $\zeta$ Her A and $\beta$ 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.

Key words: stars: oscillations (including pulsations) -- stars: individual: Procyon A -- techniques: radial velocities

Offprint request: M. Martic, milena@aerov.jussieu.fr

SIMBAD Objects

© ESO 2004

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.