Precision Radial Velocities with CSHELL

Creators: Crockett, Christopher J.; Mahmud, Naved I.; Prato, L.; Johns-Krull, Christopher M.; Jaffe, Daniel T.; Beichman, Charles A.

Abstract

Radial velocity (RV) 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 RV techniques. We present our methodology for achieving 58 m s^(–1) precision in the K band on the M0 dwarf GJ 281 using the CSHELL spectrograph at the 3 m NASA Infrared Telescope Facility. We also demonstrate our ability to recover the known 4 M_(JUP) exoplanet Gl 86 b and discuss the implications for success in detecting planets around 1-3 Myr old T Tauri stars.

Additional Information

© 2011 The American Astronomical Society. Received 2010 December 22; accepted 2011 April 19; published 2011 June 20. The authors thank R. White and J. Bailey for productive discussions on data reduction and our anonymous referee for offering many useful suggestions that improved the manuscript. We acknowledge the SIM Young Planets Key Project for research support; funding was also provided by NASA Origins Grants 05-SSO05-86 and 07-SSO07-86. This work made use of the SIMBAD database, the NASA Astrophysics Data System, and the Two Micron All Sky Survey, a joint project of the University of Massachusetts and IPAC/Caltech, funded by NASA and the NSF. We recognize the significant cultural role that Mauna Kea plays in the indigenous Hawaiian community and are grateful for the opportunity to observe there. Facilities: IRTF (CSHELL)

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