NOAO >   Observing Info >   Approved Programs >   2009A-0115

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Proposal Information for 2009A-0115


PI: Kenneth Hinkle, NOAO, hinkle@noao.edu
Address: NGSC, P.O. Box 26732, Tucson, AZ 85726, USA

CoI: Frank Fekel, Tenn. State Univ.
CoI: Richard Joyce, NOAO

Title: Orbital Survey of Red Giant - White Dwarf SNe Ia Progenitors

Abstract: Binary systems consisting of a red giant and white dwarf are possible progenitors of type Ia supernovae. The small class of recurrent novae containing red giants and white dwarfs of mass \ge1.3 M_\odot are premier examples. We propose a continuation of a survey of the spectroscopic orbits of this family of objects to determine the mass distribution of the white dwarfs. This will provide insight into the initial masses of the system and the efficiency of the mass transfer process. Ultimately we seek to understand if a significant number of objects of this type can evolve into single degenerate supernovae.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



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