NOAO >   Observing Info >   Approved Programs >   2012B-0355

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Proposal Information for 2012B-0355


PI: Terry D. Oswalt, Florida Institute of Technology, toswalt@fit.edu
Address: Physics Department, 150 West University Boulevard, Melbourne, FL 32940, USA

CoI: Jingkun Zhao, Florida Institute of Technology
CoI: Jay Holberg, University of Arizona
CoI: Martin Barstow, University of Leicester (UK)

Title: Observational Constraints on the White Dwarf Mass-Radius Relation

Abstract: We propose to measure gravitational redshifts for white dwarf stars that have distant non-interacting main sequence companions. With independent radius constraints obtained from parallaxes and surface gravity determinations obtained from our spectra, we will make improved estimates of white dwarf masses and radii that can be critically compared with theoretical mass-radius relations specific to each star. These observations will greatly extend the range of masses over which the white dwarf mass-radius relation has been tested, spanning 0.5 to 1.2 solar masses.


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 >   2012B-0355

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