Asteroseismology Results from the MUSICOS Network
Abstract
MUSICOS is a project for a multisite network of high resolution spectrometers around the world for MUlti SIte COntinuous Spectroscopy. A major scientific goal of MUSICOS is to measure stellar non radial pulsations, on OB, Be, delta Scuti, fast rotating stars, and ultimately solar type star s.We highlight asteroseismology results from the MUSICOS network obtained during different worlwide campaigns. In 1989, a record spectroscopic monitoring (3 days, 258 spectra) of the Be star 48 Per allowed the detection of NRP modes. In the 1992 campaign on the delta Scuti type theta^2 Tauri, we measured the oscillation frequencies of low degree (0-3) from velocity variations. Higher degree modes (3-10) were measured from line-profile variations, using a two-dimensional Fourier analysis resolving frequencies and azimuthal order. In the 1994 campaign, non radial pulsations were confirmed and sectorial retrogrades modes were identified on the F-star variable gamma Doradus. The next large MUSICOS campaign in November 1996 included NRP studies in delta Scuti and hotter stars.
- Publication:
-
IAU Joint Discussion
- Pub Date:
- 1997
- Bibcode:
- 1997IAUJD..24E...3F