NOAO >   Observing Info >   Approved Programs >   2011A-0590

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Proposal Information for 2011A-0590


PI: Verne V. Smith, NOAO, vsmith@noao.edu
Address: NSSC, 950 N. Cherry Ave, Tucson, AZ 85719, USA

CoI: Katia Cunha, NOAO
CoI: Luan Ghezzi, Observatorio Nacional, Rio de Janeiro, Brazil
CoI: Simon C. Schuler, NOAO

Title: Characterizing the Stellar-Metallicity versus Planet-Size Relation for Planet-Hosting Stars in the Kepler Data Release

Abstract: Chemical abundances in exoplanet-hosting stars, in comparison to stars which do not harbor known planets, have been found to exhibit intriguing differences in their respective abundance distributions. These chemical differences provide clues to how planets form, as well as how the parent star properties, most importantly the mass and total metallicity, affect the type of planetary system that forms. The program proposed here will carry out a detailed stellar parameter and chemical abundance analysis of a sample of planet-hosting stars uncovered by the Kepler spacecraft as transiting systems. As only a relatively small number of detailed abundance analyses have been undertaken on stars which host planetary systems having their most massive planets being of roughly Neptunian-mass or smaller, this study will focus on Neptunian-sized planets in order to test the possibility that stellar metallicity may play an important role in setting the sizes of planets in different planetary systems.


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-0590

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