NOAO >   Observing Info >   Approved Programs >   2006A-0483

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Proposal Information for 2006A-0483


PI: Peter McCullough, STSCI, pmcc@stsci.edu
Address: Instruments Division, 3700 San Martin Dr, Baltimore, MD 21218, USA

CoI: Jeff Valenti, STSCI
CoI: Jeff Stys, STSCI
CoI: Ken Janes, Boston University

Title: Mass Determination of a Jovian-sized Stellar Companion

Abstract: We propose to measure the mass of a transiting Jovian-sized companion in a 4-day orbit around an 11th magnitude G dwarf star. If our measurement proves the companion is a planet, like the transiting planets HD 209458b, Tres-1b, and HD 149026b, this new planet will be suitable for detailed studies with HST, Spitzer, etc due to the large apparent brightness of its host star. If our measurement proves the companion is more massive than a planet, it will fill an even more sparsely sampled part of the mass-radius phase diagram, either as a brown dwarf or as one of the lowest mass stars known with a direct mass and radius determination.


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 >   2006A-0483

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