Observations of the extreme-ultraviolet transient RE J1255+266: a short outburst of a WZ Sge system?
Article first published online: 4 APR 2002
Monthly Notices of the Royal Astronomical Society
Volume 317, Issue 2, pages 343–347, September 2000
How to Cite
Wheatley, P. J., Burleigh, M. R. and Watson, M. G. (2000), Observations of the extreme-ultraviolet transient RE J1255+266: a short outburst of a WZ Sge system?. Monthly Notices of the Royal Astronomical Society, 317: 343–347. doi: 10.1046/j.1365-8711.2000.03569.x
- Issue published online: 4 APR 2002
- Article first published online: 4 APR 2002
- Accepted 2000 March 20. Received 1999 November 4; in original form 1999 July 16.
- accretion, accretion discs;
- binaries: close;
- stars: individual: RE J1255+266;
- stars: low-mass, brown dwarfs;
- novae, cataclysmic variables;
- X-rays: stars
We present a previously unpublished ROSAT Wide Field Camera observation of the transient source RE J1255+266 made just 4 d before the discovery observations. The source is not detected, limiting the duration of the outburst to be less than expected for a superoutburst of a WZ Sge system.
We also present a marginal detection of X-ray emission from RE J1255+266 using ASCA. The most probable luminosity is 6×1029 erg s−1, which is very similar to WZ Sge itself.
We discuss the nature of the source in the light of these observations, and conclude that it is most probably a WZ Sge system, but that the observed outburst must have been a normal dwarf nova outburst.