The SARG search for planets: first results

Details The SARG search for planets: first results The SARG search for planets: first results

Jan 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.538..297c&link_type=abstract

In: Second Eddington Workshop: Stellar structure and habitable planet finding, 9 - 11 April 2003, Palermo, Italy. Edited by F. F

Other

Planets: Exoplanets, Stars: Binaries, Stars: Activity

Scientific paper

We present the results of 2 years of high precision radial velocity monitoring of a sample of visual binaries performed at Telescopio Nazionale Galileo (TNG) using the high resolution spectrograph SARG. In particular we describe the results obtained for the HD 219542 system. The A component of this binary system was found to have a 0.1 dex higher metallicity than the B component (Gratton et al. 2001) but no velocity variations above the measurement errors (5 m/s) were detected. On the other hand the B component of HD 219542 shows a low amplitude variation with a period of 112 days suggesting a Saturn-mass planet. The results of stellar activity tests made are inconclusive and alternative interpretation can not be excluded.

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