NOAO >   Observing Info >   Approved Programs >   2011A-0472

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Proposal Information for 2011A-0472


PI: Jian Ge, University of Florida, jge@astro.ufl.edu
Address: Astronomy Department, PO Box 112055, Gainesville, FL 32611, USA

CoI: Brian Lee, University of Florida
CoI: Nathan De Lee, University of Florida
CoI: Scott W. Fleming, University of Florida
CoI: Ji Wang, University of Florida
CoI: Bo Ma, University of Florida
CoI: Duy Cuong Nguyen, University of Florida

Title: SDSS-III MARVELS Brown Dwarf and Planet Candidate RV Follow-up

Abstract: The SDSS-III MARVELS planet search aims to provide: (a) the largest homogeneous single radial velocity (RV) survey dataset with moderate- high Doppler precision (5-30 m/s for 11,000 V=7.6-12 FGK stars); (b), over 150 new giant planets orbiting FGK dwarfs, subgiants, and giants over a wide range of masses (~0.8-5M_\odot); and (c) a sample of rare planets and brown dwarfs. This proposal requests KPNO 2.1m telescope time with the EXPERT instrument, to follow up 30 short and intermediate period planet and brown dwarf candidates identified from MARVELS data in order to confirm and characterize the orbits. The well- characterized giant planets from these and future follow-ups will yield the largest statistically homogeneous sample of massive exoplanets, which will be used to measure demographics of giant planet populations among host stars with a range of masses and chemical compositions. These demographics will in turn provide important constraints on theories of planet formation and migration. In addition, we will characterize rare systems such as brown dwarfs and look for additional planets around confirmed MARVELS planetary systems to study the architecture and dynamical evolution of planetary systems. Characterized brown dwarfs will be used to address the dryness of the well-known brown dwarf desert.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2011A-0472

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