A radial velocity search for p-modes in betaVir

Details A radial velocity search for p-modes in betaVir A radial velocity search for p-modes in betaVir

2004-09-06

arxiv.org/abs/astro-ph/0409126v1

Astronomy and Astrophysics

Astrophysics

Conference SOHO 14/ GONG 2004 Helio- and Asteroseismology: Towards a Golden Future

Scientific paper

Spectroscopic high-resolution observations were performed with fiber-fed cross-dispersed echelle spectrographs in order to measure the fluctuations in radial velocities of a sample of bright stars that are likely to undergo solar-like oscillations. Here we report the results for beta Vir (HR4540) from two observing runs carried out in February 2002 with FEROS at the ESO 1.52 m telescope in La Silla (Chile) and ELODIE spectrograph at 1.93 OHP telescope (Observatoire de Haute Provence, France). The analysis of the time series of Doppler shifts from both sites has revealed the presence of an excess power around 1.7 mHz. We discuss the interpretation of this data set in terms of possible p-mode oscillations.

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