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Proposal Information for 2010B-0130


PI: Gaspar Bakos, Harvard-Smithsonian Center for Astrophysics, gbakos@cfa.harvard.edu
Address: Solar, Stellar and Planetary Sciences (SSP) Division, 60 Garden street, Cambridge, MA 02138, USA

CoI: Guillermo Torres, Harvard-Smithsonian Center for Astrophysics
CoI: David W. Latham, Harvard-Smithsonian Center for Astrophysics
CoI: Robert W. Noyes, Harvard-Smithsonian Center for Astrophysics
CoI: Joel D. Hartman, Harvard-Smithsonian Center for Astrophysics

Title: Confirmation spectroscopy of HATNet transiting exoplanet candidates using Keck-I/HIRES

Abstract: The HATNet project has produced dozens of transiting exoplanet (TEP) candidates around bright (V<13.0) stars. In order to confirm their planetary nature, and perform accurate initial characterization, they require high-precision radial velocity (RV) observations and spectral line bisector analysis. \bf Fifteen HATNet TEPs have been published or submitted so far based almost entirely on Keck/HIRES observations; another 10 have been verified and are in the process of being analyzed, some of these may require additional observations if detailed analysis suggests the presence of additional planets in the system or a non-zero eccentricity, ~15 more need further Keck/HIRES spectra for better characterization leading to final confirmation, and ~15 more are ready for initial HIRES observations. We expect dozens of additional candidates per semester. These are high quality candidates: based on statistics to date, \bf 75% of the HIRES time is spent on candidates that are eventually identified as hosting transiting planets- representing a very efficient use of Keck. We propose for 4 nights on Keck-I/HIRES for 2010B to finish pending candidates and also to perform a similar analysis on new targets. We are confident that \bf this effort will lead to the announcement of several new TEPs.


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