Solar-like oscillations in Procyon A
Astrophysics
2009-11-10 v1
Abstract
The F5 subgiant Procyon A (alpha CMi, HR 2943) was observed with the Coralie fiber-fed echelle spectrograph on the 1.2-m Swiss telescope at La Silla in February 1999. The resulting 908 high-accuracy radial velocities exhibit a mean noise level in the amplitude spectrum of 0.11 m s^-1 at high frequency. These measurements show significant excess in the power spectrum between 0.6-1.6 mHz with 0.60 m s^-1 peak amplitude. An average large spacing of 55.5 uHz has been determined and twenty-three individual frequencies have been identified.
Cite
@article{arxiv.astro-ph/0501271,
title = {Solar-like oscillations in Procyon A},
author = {P. Eggenberger and F. Carrier and F. Bouchy and A. Blecha},
journal= {arXiv preprint arXiv:astro-ph/0501271},
year = {2009}
}
Comments
A&A accepted