NOAO >   Observing Info >   Approved Programs >   2013A-0430

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Proposal Information for 2013A-0430


PI: Paula Szkody, University of Washington, szkody@astro.washington.edu
Address: Department of Astronomy, Physics-Astronomy Bldg, Box 351580, University of Washington, Seattle, WA, 98195-1580, , Telephone:, 206.543.2888, United States

CoI: Boris Gaensicke, University of Warwick
CoI: Elme Breedt, University of Warwick
CoI: Pablo Rodriguez-Gil, Instituto de Astrofisica de Canarias
CoI: Andrew Drake, Caltech (Physics, Maths and Astronomy)
CoI: Matthias Schreiber, Universidad de Valparaiso

Title: Uncovering the faintest cataclysmic variables in the SDSS footprint

Abstract: Cataclysmic variables are an excellent benchmark population to test, calibrate, and develop binary population synthesis models. The Sloan Digital Sky Survey (SDSS) produced the deepest and most homogenous CV sample to date, highlighting the importance of the faintest systems to confirm and calibrate models. The spectroscopic completeness of SDSS plummets below i=19.1 however, and it is exactly in this range that the composition of the Galactic CV population undergoes a major change. Towards fainter magnitudes the fraction of low-luminosity systems increase and probably dominate the space density of CVs. We propose here to extend the depth of the SDSS CV sample by obtaining GMOS spectra of faint CV candidates in the SDSS footprint, to complement previous Gemini and GTC observations.


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 >   2013A-0430

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