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Precision radial velocities with CSHELL

By Christopher J. Crockett, Naved I. Mahmud, Lisa Prato, Christopher M. Johns-Krull, Daniel T. Jaffe and Charles A. Beichman

Abstract

Radial velocity identification of extrasolar planets has historically been dominated by optical surveys. Interest in expanding exoplanet searches to M dwarfs and young stars, however, has motivated a push to improve the precision of near infrared radial velocity techniques. We present our methodology for achieving 58 m/s precision in the K band on the M0 dwarf GJ 281 using the CSHELL spectrograph at the 3-meter NASA IRTF. We also demonstrate our ability to recover the known 4 Mjup exoplanet Gl 86 b and discuss the implications for success in detecting planets around 1-3 Myr old T Tauri stars.Comment: 31 pages, 3 figures, 2 tables, accepted for publication in Ap

Topics: Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Solar and Stellar Astrophysics
Year: 2011
DOI identifier: 10.1088/0004-637X/735/2/78
OAI identifier: oai:arXiv.org:1104.3804
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