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The First HET Planet: A Companion to HD 37605

By SpaceRef Editor
August 31, 2004
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Astrophysics, abstract
astro-ph/0407146

From: William Cochran [view email]
Date: Wed, 7 Jul 2004 16:17:59 GMT (18kb)

The First HET Planet: A Companion to HD 37605

Authors:
W. D. Cochran,
M. Endl,
B. McArthur,
D. B. Paulson,
V. V. Smith,
P. J. MacQueen,
R. G. Tull,
J. Good,
J. Booth,
M. Shetrone,
B. Roman,
S. Odewahn,
F. Deglman,
M. Graver,
M. Soukup,
M. L. Villarreal Jr

Comments: 4 Pages, 2 figures. Accepted in Astrophysical Journal Letters,
this http URL


We report the first detection of a planetary-mass companion to a star using
the High Resolution Spectrograph (HRS) of the Hobby-Eberly Telescope (HET). The
HET-HRS now gives routine radial velocity precision of 2-3 m/s for high SNR
observations of quiescent stars. The planetary-mass companion to the metal-rich
K0V star HD37605 has an orbital period of 54.23 days, an orbital eccentricity
of 0.737, and a minimum mass of 2.84 Jupiter masses. The queue-scheduled
operation of the Hobby-Eberly Telescope enabled us to discovery of this
relatively short-period planet with a total observation time span of just two
orbital periods. The ability of queue-scheduled large-aperture telescopes to
respond quickly to interesting and important results demonstrates the power of
this new approach in searching for extra-solar planets as well as in other ares
of research requiring rapid response time critical observations.

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