Search for p-mode Frequencies on Procyon A
Abstract
Following the recent evidence for the presence of an excess of power around 1 mHz in the frequency spectrum of the Doppler shift measurements for Procyon (Martic et al., 1999), we searched for individual frequencies of p-modes from three independent observing runs (5, 10 and 15 nights). All observations (Decembre 1997, Novembre 1998, January 1999) were made with the ELODIE fibre-fed cross-dispersed echelle spectrograph on the 1.93 m telescope at Observatoire de Haute Provence. The individual peaks in clean spectra of each time series in the interval of excess power are compared with the predicted p-mode frequencies from stellar models (Chaboyer et al., 1999) for Procyon A.
- Publication:
-
Recent Insights into the Physics of the Sun and Heliosphere: Highlights from SOHO and Other Space Missions
- Pub Date:
- 2001
- Bibcode:
- 2001IAUS..203..121M