PI: Mukremin Kilic, U. of Oklahoma, email@example.com
Address: Department of Physics and Astronomy, Room 131 Nielsen Hall, Norman, OK, 73019-0225 USA
CoI: Warren Brown, Harvard-Smithsonian Center for Astrophysics
Title: A Detached, Eclipsing 40 Min Period Double White Dwarf Binary
Abstract: We have recently discovered a 40 min period eclipsing double white dwarf binary. Our discovery data are relatively poor for this relatively faint object, resulting in 10% and 100% uncertainties in the mass and radius of the secondary white dwarf. Here we request GMOS g and r band observations to constrain the physical parameters of both stars in the system, including their masses, radii, temperatures, and luminosities. General Relativity predicts a merger time of 20 Myr and a change in eclipse times of 7 s after 5 years and 30 s after 10 years. The proposed Gemini observations will provide the first precise measurement of the time-of-eclipse for this system.
Program Type: Standard/Galactic
Run 1 (2018A): GEM-NQ/GMOSN -- 8.3hrs band 3 (GN-2018A-Q-317 )
National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360