NOAO >   Observing Info >   Approved Programs >   2009B-0098

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Proposal Information for 2009B-0098


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: Over the past years, 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. Based on Keck/HIRES observations, \bf 11 HATNet TEPs have been announced (including HAT-P- 11b, a transiting super-Neptune around a 9th magnitude star in the Kepler field), 7 more have been verified and are being readied for publication, ~10 more need further Keck/HIRES spectra for better characterization leading to final confirmation, ~17 more are ready for initial HIRES observations. We expect an additional ~25 candidates per semester. These are high quality candidates: based on statistics to date, \bf 50% of those subjected to HIRES observations have been identified as hosting TEPs, meaning a very efficient use of Keck. We propose for 4 nights on Keck-I/HIRES for 2009B, and for long- term status, 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 per semester.


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