AAS Meeting #193 - Austin, Texas, January 1999
Session 97. Extra-Solar Planets and the Search for Life
Display, Saturday, January 9, 1999, 9:20am-4:00pm, Exhibit Hall 1

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[97.02] The Lick Observatory Planet Search

D. A. Fischer (SFSU), R. P. Butler (AAO), G. W. Marcy (SFSU, UCB), S. S. Vogt (UCO Lick, UCSC)

The 11 year Lick survey of 107 stars has revealed 7 planet candidates to date, all orbiting their host stars within 2 AU. The highest Msini is 6.8 MJup. We have recently enlarged the sample of stars at Lick Observatory. Doppler measurements of 82 new stars observed at Lick with additional velocities from Keck, have revealed two new planet candidates.

The G3 V/IV star, HD195019, exhibits Keplerian velocity variations with a period of 18.27 d, orbital eccentricity of 0.03 and Msini = 3.5 MJup. This star is chromospherically inactive with approximately solar metallicity.

The second planet candidate was detected around HD 217107, a G7V star. This companion exhibits a 7.12 day Keplerian period with eccentricity of 0.14 and Msini = 1.27 MJup. The star is chromospherically inactive with a metallicity estimate of +0.29 from uvby photometry.

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