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A planetary nebula around nova V458 Vul undergoing flash ionization
R. Wesson, M. J. Barlow, R. L. M. Corradi +25
Nova V458 Vul erupted on 2007 August 8th and reached a visual magnitude of 8.1 a few days later. H images obtained six weeks before the outburst as part of the IPHAS galactic pl…
Time-resolved optical photometry of the ultra-compact binary 4U0614+091
T. Shahbaz, C. A. Watson, C. Zurita +2
We present a detailed optical study of the ultra-compact X-ray binary 4U0614+091. We have used 63 hrs of time-resolved optical photometry taken with three different telescopes (IAC…
On the evolutionary status of short period cataclysmic variables
S. P. Littlefair, V. S. Dhillon, T. R. Marsh +5
(Abridged) We present high-speed, three-colour photometry of seven short period (Porb <= 95 mins) eclipsing CVs from the Sloan Digital Sky Survey. We determine the system parameter…
The first polarimetric signatures of infrared jets in X-ray binaries
T. Shahbaz, R. P. Fender, C. A. Watson +1
We present near-infrared linear spectropolarimetry of a sample of persistent X-ray binaries, Sco X-1, Cyg X-2 and GRS1915+105. The slopes of the spectra are shallower than what is…
Imaging the cool stars in the interacting binaries AE Aqr, BV Cen and V426 Oph
C. A. Watson, D. Steeghs, V. S. Dhillon +1
It is well known that magnetic activity in late-type stars increases with increasing rotation rate. Using inversion techniques akin to medical imaging, the rotationally broadened p…
On the ultra-compact nature of 4U1822-000
T. Shahbaz, C. A. Watson, H. Hernandez-Peralta
We report the discovery of a periodic modulation in the optical lightcurve of the candidate ultra-compact X-ray binary 4U1822-000. Using time-resolved optical photometry taken with…