3.9k citations · 18.7k across the 302 of their papers we have counts for
11 papers · 1 filter
Geometrical constraints upon the unipolar model of V407 Vul and RXJ0806.3+1527
S. C. C. Barros, T. R. Marsh, P. Groot +5
V407 Vul and RX J0806.3+1527 are X-ray emitting stars with X-ray light curves that are 100% modulated on periods of 569 and 321 seconds respectively. These periods and no others ar…
Rotational period of WD1953-011 - a magnetic white dwarf with a star spot
C. S. Brinkworth, T. R. Marsh, L. Morales-Rueda +3
WD1953-011 is an isolated, cool (7920 +/- 200K, Bergeron, Legget & Ruiz, 2001) magnetic white dwarf (MWD) with a low average field strength (~70kG, Maxted et al. 2000) and a higher…
Multi-epoch Spectroscopy of IY UMa: Quiescence, Rise, Normal Outburst & Superoutburst
Daniel J. Rolfe, Carole A. Haswell, Timothy M. C. Abbott +3
We exploit rare observations covering the time before and during a normal outburst in the deeply-eclipsing SU UMa system IY UMa to study the dramatic changes in the accretion flow…
Subdwarf B Binaries from the Edinburgh--Cape Survey
L. Morales-Rueda, P. F. L. Maxted, T. R. Marsh +2
We present the first results of a campaign to obtain orbital solutions of subdwarf B (sdB) stars from the Edinburgh-Cape survey. We have obtained blue spectra of 35 sdBs, 20 of whi…
HS2331+3905: The cataclysmic variable that has it all
S. Araujo-Betancor, B. T. Gaensicke, H. -J. Hagen +6
We report detailed follow-up observations of the cataclysmic variable HS2331+3905, identified as an emission-line object in the Hamburg Quasar Survey. An orbital period of 81.08min…
Detection of the white dwarf and the secondary star in the new SU UMa dwarf nova HS 2219+1824
P. Rodriguez-Gil, B. T. Gaensicke, H. -J. Hagen +4
We report the discovery of a new, non-eclipsing SU UMa-type dwarf nova, HS 2219+1824. Photometry obtained in quiescence (V ~ 17.5) reveals a double-humped light curve from which we…
RX J2130.6+4710 - an eclipsing white dwarf - M-dwarf binary star
P. F. L. Maxted, T. R. Marsh, L. Morales-Rueda +5
(Abridged) We report the detection of eclipses in the close white-dwarf - M-dwarf binary star RXJ2130.6+4710. We estimate that the spectral type of the M-dwarf is M3.5Ve or M4Ve. W…
ULTRACAM photometry of the eclipsing cataclysmic variables XZ Eri and DV UMa
W. J. Feline, V. S. Dhillon, T. R. Marsh +1
We present high-speed, three-colour photometry of the faint eclipsing cataclysmic variables XZ Eri and DV UMa. We determine the system parameters through two techniques: first, tim…
A 150MG magnetic white dwarf in the cataclysmic variable RX J1554.2+2721
B. T. Gaensicke, S. Jordan, K. Beuermann +4
We report the detection of Zeeman-split Lalpha absorption pi and sigma+ lines in the far-ultraviolet Hubble Space Telescope/Space Telescope Imaging Spectrograph spectrum of the mag…
Photometric Observations of the Type Ia SN 2002er in UGC 10743
G. Pignata, F. Patat, S. Benetti +20
Extensive light and colour curves for the Type Ia supernova SN 2002er are presented as part of the European Supernova Collaboration. We have collected UBVRI photometry from ten dif…
Double degenerates and progenitors of supernovae type Ia
R. Napiwotzki, L. Yungelson, G. Nelemans +12
We report on systematic radial velocity surveys for white dwarf - white dwarf binaries (double degenerates - DDs) including SPY (ESO Supernovae Ia progenitor survey) recently carri…