UNSPECIFIED (2004) ULTRACAM photometry of the eclipsing cataclysmic variable OU Vir. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 347 (4). pp. 1173-1179. ISSN 0035-8711

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Abstract

We present high-speed, three-colour photometry of the faint eclipsing cataclysmic variable OU Vir. For the first time in OU Vir, separate eclipses of the white dwarf and the bright spot have been observed. We use timings of these eclipses to derive a purely photometric model of the system, obtaining a mass ratio of q=0.175+/-0.025, an inclination of i=79.degrees2+/-0.degrees7 and a disc radius of R-d/a=0.2315+/-0.0150. We separate the white dwarf eclipse from the light curve and, by fitting a blackbody spectrum to its flux in each passband, obtain a white dwarf temperature of T=13900+/-600 K and a distance of D=51+/-17 pc. Assuming that the primary obeys the Nauenberg mass-radius relation for white dwarfs and allowing for temperature effects, we also find a primary mass M-w/M-circle dot=0.89+/-0.20, a primary radius R-w/R-circle dot=0.0097+/-0.0031 and an orbital separation a/R-circle dot=0.74+/-0.05.

Item Type:	Journal Article
Subjects:	Q Science > QB Astronomy
Journal or Publication Title:	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Publisher:	BLACKWELL PUBLISHING LTD
ISSN:	0035-8711
Date:	1 February 2004
Volume:	347
Number:	4
Number of Pages:	7
Page Range:	pp. 1173-1179
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/8865

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