Solar-Like Oscillations in β Hydri: Evidence for Short-Lived High-Amplitude Oscillations
Abstract
Velocity measurements of the G2 subgiant beta Hyi with both UCLES and CORALIE show a clear excess of power centred at 1.0 mHz. In the UCLES data we find evidence for a short-lived, high-amplitude oscillation event. If confirmed as a feature of subgiants, such `starquakes' would make it harder to measure accurate mode frequencies and perform asteroseismology.
- Publication:
-
IAU Colloq. 185: Radial and Nonradial Pulsationsn as Probes of Stellar Physics
- Pub Date:
- 2002
- DOI:
- 10.48550/arXiv.astro-ph/0202471
- arXiv:
- arXiv:astro-ph/0202471
- Bibcode:
- 2002ASPC..259..464B
- Keywords:
-
- Astrophysics
- E-Print:
- 4 pages, latex, eps figures, To appear in Proc. IAU Colloq. 185: "Radial and Nonradial Pulsations as Probes of Stellar Physics", edited by C. Aerts, T.R. Bedding and J. Christensen-Dalsgaard, ASP Conf. Series, Vol. 259, p. 464