The First HET Planet: A Companion to HD 37605

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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