UNSPECIFIED (2005) Three new long-period CVs from the Hamburg Quasar Survey. In: Conference on Astrophysics of Cataclysmic Variables and Related Objects, JUL 11-16, 2004, Strasbourg, FRANCE.

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Abstract

We present time-resolved optical spectroscopy and photometry of three new relatively bright (V similar to 14.0 - 15.5) long-period cataclysmic variables discovered in the Hamburg Quasar Survey: HS 0139+0559, HS 0229+8016 and HS 0506+7725. The orbital periods, 243.2 +/- 0.4 min, 233 +/- 1 min and 212.6 +/- 0.1 min, are determined from radial velocity studies. The light curve of HS 0506+7725 is characterised by flickering. HS 0229+8016 and HS 0139+0559 display practically no photometric variability. Whereas HS 0506+7725 is a weak X-ray emitter in the ROSAT All Sky Survey, HS 0229+8016 and HS 0139+0559 were not detected. The identification of these three systems underlines that the currently known sample of CVs is likely incomplete even for bright systems.

Item Type:	Conference Item (UNSPECIFIED)
Subjects:	Q Science > QB Astronomy
Series Name:	ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES
Journal or Publication Title:	Astrophysics of Cataclysmic Variables and Related Objects
Publisher:	ASTRONOMICAL SOC PACIFIC
ISBN:	1-58381-193-1
Editor:	Hameury, JM and Lasota, JP
Date:	2005
Volume:	330
Number of Pages:	2
Page Range:	pp. 469-470
Publication Status:	Published
Title of Event:	Conference on Astrophysics of Cataclysmic Variables and Related Objects
Location of Event:	Strasbourg, FRANCE
Date(s) of Event:	JUL 11-16, 2004
URI:	http://wrap.warwick.ac.uk/id/eprint/34189

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