3.9k citations · 18.7k across the 302 of their papers we have counts for
10 papers · 2 filters
ULTRACAM Photometry of the ultracompact binaries V407 Vul and HM Cnc
S. C. C. Barros, T. R. Marsh, V. S. Dhillon +6
V407 Vul (RXJ1914.4+2456) and HM Cnc (RXJ0806.3+1527) are X-ray emitting stars with X-ray light curves that are 100% modulated on periods of 569 and 321 seconds respectively. These…
SDSS J0926+3624, the first eclipsing AM CVn star, as seen by ULTRACAM
T. R. Marsh, V. S. Dhillon, S. Littlefair +6
We present light curves of SDSS J0926+3624, the first eclipsing AM CVn star, observed with the high-speed CCD camera ULTRACAM on the WHT. We find unusually that the accreting white…
Recent observational progress in AM CVn binaries
G. Ramsay, C. Brocksopp, P. Groot +9
We present the results of some recent research on AM CVn systems. We present: X-ray/UV observations made using XMM-Newton; the X-ray grating spectrum of RX J1914+24; preliminary re…
VLT/FORS spectroscopy of faint cataclysmic variables discovered by the Sloan Digital Sky Survey
John Southworth, B. T. Gaensicke, T. R. Marsh +5
We present medium-resolution VLT/FORS2 spectroscopy of six cataclysmic variables discovered by the Sloan Digital Sky Survey. We determine orbital periods for SDSS J023322.61+005059…
A search for optical bursts from the rotating radio transient J1819-1458 with ULTRACAM
V. S. Dhillon, T. R. Marsh, S. P. Littlefair
We report on the search for optical bursts from J1819-1458, a member of the recently discovered Rotating Radio Transients (RRATs). J1819-1458 exhibits 3 millisecond bursts with a p…
ULTRACAM observations of SDSS J170213.26+322954.1 - an eclipsing cataclysmic variable in the period gap
S. P. Littlefair, V. S. Dhillon, T. R. Marsh +1
We present high-speed, three-colour photometry of the eclipsing cataclysmic variable SDSS J170213.26+322954.1 (hereafter SDSS J1702+3229). This system has an orbital period of 2.4…
The nature of the close magnetic white dwarf + probable brown dwarf binary SDSS J121209.31+013627.7
M. R. Burleigh, T. R. Marsh, B. T. Gansicke +16
Optical time series photometry of the short period magnetic white dwarf + probable brown dwarf binary SDSS 121209.31+013627.7 reveals pulse-like variability in all bands from i' to…
Kinematics of the ultra-compact helium accretor AM Canum Venaticorum
G. H. A. Roelofs, P. J. Groot, G. Nelemans +2
We report on the results from a five-night campaign of high-speed spectroscopy of the 17-minute binary AM Canum Venaticorum, obtained with the 4.2-m William Herschel Telescope on L…
GEMINI spectroscopy of the ultra-compact binary candidate V407 Vul
D. Steeghs, T. R. Marsh, S. C. C. Barros +5
We present time-resolved spectroscopy of the optical counterpart to the proposed ultra-compact binary system V407 Vul (=RX J1914.4+2456). Our Gemini spectra resolve the 9.48 minute…
Optical spectroscopy of the dwarf nova U Geminorum
E. Unda-Sanzana, T. R. Marsh, L. Morales-Rueda
U Gem is unique in having a direct measurement of K1 = 107 +- 2 km/s, Long et al. 1999). We present high-resolution optical spectra of the dwarf nova U Gem in quiescence taken to t…