90 citations · 231 across the 7 of their papers we have counts for
7 papers
Eclipse mapping the flickering sources in the dwarf nova HT Cassiopeia
R. Baptista, B. Borges, V. Kolokotronis +2
We report results of the eclipse mapping analysis of an ensemble of light curves of HT Cas. The fast response of the white dwarf to the increase in mass transfer rate, the expansio…
Cyclical period changes in HT Cas: a clear difference between systems above and below the period gap
B. W. Borges, R. Baptista, C. Papadimitriou +1
We report the identification of cyclical changes in the orbital period of the eclipsing cataclysmic variable HT Cas. We measured new white dwarf mid-eclipse timings and combined wi…
HS1857+5144: A hot and young pre-cataclysmic variable
A. Aungwerojwit, B. T. Gaensicke, P. Rodriguez-Gil +5
We report the discovery of a new white dwarf/M dwarf binary, HS1857+5144, identified in the Hamburg Quasar Survey (HQS). Time-resolved optical spectroscopy and photometry were carr…
SW Sextantis stars: the dominant population of CVs with orbital periods between 3-4 hours
P. Rodriguez-Gil, B. T. Gaensicke, H. -J. Hagen +15
[Abridged] We present time-series optical photometry of five new CVs identified by the Hamburg Quasar Survey. The eclipses observed in HS 0129+2933, HS 0220+0603, and HS 0455+8315…
Cataclysmic variables from a ROSAT/2MASS selection I: Four new intermediate polars
B. T. Gaensicke, T. R. Marsh, A. Edge +8
We report the first results from a new search for cataclysmic variables (CVs) using a combined X-ray (ROSAT) / infrared (2MASS) target selection that discriminates against backgrou…
The XMM-Newton/2dF survey IV. The X-ray spectral properties of the hard sources
I. Georgantopoulos, A. Georgakakis, A. Akylas +4
We present an analysis of the X-ray spectral properties of 61 hard X-ray selected (2-8 keV) sources from the bright ( \funits) {\it XMM-Newton}/2dF survey. Th…