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Program Information for 2015B-0053


PI: Ji Wang, Yale U., ji.wang@yale.edu
Address: Astronomy Department, RM 170 JWG, 260 Whitney Ave, New Haven, CT 06511 USA

CoI: Debra Fischer, Yale U.
CoI: Bo Ma, U. of Florida
CoI: Tabetha S Boyajian, Yale U.
CoI: John M Brewer, Yale U.

Title: Confirming the Planet-Metallicity Correlation For Small Planets

Abstract: Gas giant planets are preferentially found around metal-rich stars. This planet-metallicity correlation provides important evidence for the core-accretion scenario for large planet formation. For small terrestrial planets, a planet-metallicity correlation has recently been suggested by Wang \& Fischer (2015). The correlation has significant implications to the theory of planet formation as well as strategic planning for future missions in search of terrestrial planets. For example, if a correlation is firmly established, metal-rich stars should be prioritized to increase the likelihood of finding terrestrial planets. We propose to use WIYN's Hydra Bench spectrograph to confirm the planet-metallicity correlation for small planets. We will take spectra of \sci transiting exoplanet host stars from the Kepler mission (science sample) and \con stars with no planet detections in the Kepler field (control sample). By comparing the metallicity distribution of two samples, we will confirm the planet-metallicity correlation for small planets. The spectra of all Kepler stars in this study, regardless of hosting transiting planets or not, will improve our understanding of stellar population in the Kepler field.

Program Type: Standard/NASA WIYN

Scheduled Nights:
Run 1 (2015B):  WIYN/HYDR -- 3.5n on Aug 28 - Aug 31 2015, Sep 02 - Sep 04 2015


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 >   2015B-0053

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