Detection of Solar-like Oscillations in the G7 Giant Star xi Hya
Preprint
- 17 September 2002
Abstract
We report the firm discovery of solar-like oscillations in a giant star. We monitored the star xi Hya (G7III) continuously during one month with the CORALIE spectrograph attached to the 1.2m Swiss Euler telescope. The 433 high-precision radial-velocity measurements clearly reveal multiple oscillation frequencies in the range 50 - 130 uHz, corresponding to periods between 2.0 and 5.5 hours. The amplitudes of the strongest modes are slightly smaller than 2 m/s. Current model calculations are compatible with the detected modes.Keywords
All Related Versions
- Version 1, 2002-09-17, ArXiv
- Published version: Astronomy & Astrophysics, 394 (1), L5.
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