NOAO >   Observing Info >   Approved Programs >   2011B-0074

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Proposal Information for 2011B-0074


PI: Steve B. Howell, NASA Ames Research Center, howell@noao.edu
Address: Astrophysics, P.O. Box 1 M/S 244-30, Moffett Field, CA 94035, US

CoI: Mark Everett, NOAO
CoI: David Silva, NOAO
CoI: Jason Rowe, NASA Ames Research Center
CoI: Paula Szkody, University of Washington
CoI: Ken Mighell, NOAO
CoI: Jay Holberg, University of Arizona

Title: Spectroscopy of Kepler Exo-planet Transit Candidate Stars

Abstract: We propose a long term spectroscopic follow-up program in support of the NASA Kepler exo-planet mission. The Kepler project is now focusing on exo-planet candidates which are smaller in radius (down to Earth- size), have longer period orbits, and exo-planet candidates in fainter stars and eclipsing binary stars. Our five scientific goals for our 4m program are to provide: 1) reconnaissance spectra of newly discovered exo-planet stars yielding model fits to T_eff and log g, 2) radial velocity solutions for eclipsing binary star systems in which a third body exo-planet candidate has been detected, 3) velocity or line asymmetry (bisector) measurements in order to provide a line of defense against unseen stellar mass companions, 4) good S/N spectroscopic observations of newly discovered white dwarfs to use as photometric calibrators for the Kepler focal plane, and 5) spectra of odd/interesting variable stars discovered by Kepler. All of these tasks can be accomplished using the Kitt Peak 4-m telescope and RCspec as shown by our previous time allocations.


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