Hostname: page-component-586b7cd67f-dlnhk Total loading time: 0 Render date: 2024-11-30T12:44:26.241Z Has data issue: false hasContentIssue false
  • English
  • Français

Non-Magnetic Cataclysmic Variables in the ROSAT WFC Survey

Published online by Cambridge University Press:  12 April 2016

Peter J. Wheatley
Peter J. Wheatley*
Affiliation:
Astronomical Institute, Utrecht University, Postbus 80 000, 3508 TA Utrecht, NL

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Six non-magnetic cataclysmic variables were detected during the ROSAT WFC survey; four dwarf novae and two nova-like variables. In two dwarf novae (VW Hyi & SS Cyg) the flux evolution through outburst was followed across a broad wavelength range. The two other detections (Z Cam & RX J0640−24) also suggest the presence of distinct luminous EUV emission components; supporting the view that such components are a ubiquitous feature of dwarf nova outbursts. Two bright nova-like variables were detected, but these detections are found to be consistent with the soft tail of the X-ray emission.

Type
VI. Cataclysmic Variable Stars
Information
International Astronomical Union Colloquium , Volume 152: Astrophysics in the Extreme Ultraviolet , 1996 , pp. 337 - 341
Copyright
Copyright © Kluwer 1996

References

Beuermann, K. & Thomas, H.-C. 1993, The ROSAT view of the cataclysmic variable sky, Adv. Sp. Sci., 13(12), 115 Google Scholar
Mason, K.O., Cordova, F.A., Watson, M.G., & King, A.R. 1992, The discovery of orbital dips in the soft X-ray emission of U Gem during an outburst., MNRAS, 232, 779 Google Scholar
Jones, M.H. & Watson, M.G. 1992, The EXOSAT observations of SS Cygni, MNRAS, 257, 633 Google Scholar
Ponman, T.J., Belloni, T., Duck, S.R., Verbunt, F., Watson, M.G. & Wheatley, P.J. 1995, The EUV/X-ray spectrum of SS Cygni in outburst, MNRAS, in pressGoogle Scholar
Pounds, K.A. et al. 1993, The ROSAT Wide Field Camera all-sky survey of extreme-ultraviolet sources. I - The Bright Source Catalogue, MNRAS, 260, 77 Google Scholar
Pringle, J.E., Bateson, F.M., Hassall, B.J.M., Heise, J. & Van Der Woerd, H. 1987, Multiwavelength monitoring of the dwarf nova VW Hydri. I - Overview., MNRAS, 225, 73 Google Scholar
Pringle, J.E. & Savonije, G.J. 1979, X-ray emission from dwarf novae, MNRAS, 212, 519 Google Scholar
Sims, M.R. et al. 1990, XUV Wide Field Camera for ROSAT, Optical Engineering, 26(9), 649 Google Scholar
Van Teeseling, A. & Verbunt, F. 1994, ROSAT observations of ten cataclysmic variables, A&A, 292, 519 Google Scholar
Van Teeseling, A., Verbunt, F. & Heise, J. 1993, The nature of the X-ray spectrum of VW Hydri, A&A, 270, 159 Google Scholar
Wheatley, P.J. 1995a, Cataclysmic variables in the extreme ultraviolet, Ph.D. Thesis, Leicester Univ. Google Scholar
Wheatley, P.J. 1995b, Magnetic cataclysmic variables in the ROSAT WFC survey, Proc. of the Cape workshop on Magnetic Cataclysmic Variables, ASP Conf. Series, ed. Buckley, D.A.H. & Warner, B. Google Scholar
Wheatley, P.J., Verbunt, F., Belloni, T., Watson, M.G., Naylor, T.,; Ishida, M., Duck, S.R. & Pfeffermann, E. 1995, The X-ray and EUV spectrum of the dwarf nova VW Hyi in outburst and quiescence, AfeA, in press, http://stkwww.fys.ruu.nl:8000/cgi-bin/preprints/preprints Google Scholar