AAS 196th Meeting, June 2000
Session 35. High Resolution Spectroscopy at Visible and Ultraviolet Wavelengths
Topical Session Oral, Wednesday, June 7, 2000, 8:30-10:00am, 10:45am-12:30pm, 2:30-4:00pm, 4:15-6:00pm, Highland A/K

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[35.14] Extrasolar Planets by Precise Velocities

G. W. Marcy (UC Berkeley), S. Vogt (UCO/Lick), D. Fischer (UC Berkeley), R. P. Butler (Carnegie Inst. of Washington, DTM)

Doppler shifts of FGKM-type main sequence stars are routinely measured with a precision of 3 m/s, enabling detection of orbiting planets. To date, 36 extrasolar planets have been identified, including the first system of multiple planets and the first transiting planet (Henry et al. 2000; Charbonneau et al. 2000). The distribution of planet masses rises steeply from 8 Mjup toward sub-Jupiter masses, and two planets have Msini less than the mass of Saturn. All 24 planets beyond 0.2 AU from their star reside in eccentric orbits with e>0.1, with no circular orbits yet found among them. Future Doppler measurements must maintain precision of 2 m/s to detect true analogs of Jupiter at 5 AU.

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