ar X iv : a st ro - p h / 05 02 01 4 v 1 1 F eb 2 00 5 Solar - like oscillations in the F 9 V β Virginis
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چکیده
This paper presents the analysis of Doppler p-modes of the F9 V star β Virginis obtained with the spectrograph Coralie in March 2003. Eleven nights of observations have made it possible to collect 1293 radial velocity measurements with a standard deviation of about 2.2 m s −1. The power spectrum of the high precision velocity time series clearly presents several identifiable peaks between 0.7 and 2.4 mHz showing regularity with a large and small spacings of ∆ν = 72.1 µHz and δν 02 = 6.3 µHz respectively. Thirty-one individual modes have been identified with amplitudes in the range 23 to 46 cm s −1 , i.e. with a signal to noise between 3 and 6.
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