Detection of p-mode oscillations in β Hydri from photometric observations with WIRE

Details Detection of p-mode oscillations in β Hydri from photometric observations with WIRE Detection of p-mode oscillations in β Hydri from photometric observations with WIRE

Jun 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007coast.150..147k&link_type=abstract

Communications in Astroseismology, Vol. 150, p.147

Astronomy and Astrophysics

Astronomy

3

Scientific paper

β Hydri was observed with the star tracker on the WIRE satellite for 34 days in August and September 2005. After correcting the data for stray light and satellite jitter, a clear excess is seen around 1 mHz in the power spectrum. The photometric observations with WIRE were performed simultaneously with a ground-based campaign on β Hydri, where ultra-precise radial velocity data were obtained with HARPS at the ESO 3.6-m telescope and with UCLES at the 3.9-m AAT. Using the frequencies from the velocity data, we have obtained estimates of mode lifetime, rotation period and inclination by fitting a model to the power spectrum of the photometric data.

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