E-viri
PDF
Recenzirano
Odprti dostop
-
BOUCHY, F; BAZOT, M; SANTOS, N. C; VAUCLAIR, S; SOSNOWSKA, D
Astronomy and astrophysics (Berlin), 09/2005, Letnik: 440, Številka: 2Journal Article
We present HARPS spectroscopy of mu Arae (HD 160691) performed for studying the origin of the metallicity excess in this planet-hosting stars. The asteroseismologic campaign led to the previously reported discovery of a 14 earth mass planetary companion (Santos et al. 2004b, A&A, 426, L19). The present analysis reinforces this interpretation by excluding other possible processes for explaining the observed Doppler variation and leads to the identification of up to 43 p-mode oscillations with l = 0-3, frequencies in the range 1.3-2.5 mHz and amplitudes in the range 10-40 cm s super(-1).
