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10 papers · 2 filters
Constraining the Evolution of Cataclysmic Variables via the Masses and Accretion Rates of their Underlying White Dwarfs
A. F. Pala, B. T. Gänsicke, D. Belloni +28
We report on the masses (), effective temperatures () and secular mean accretion rates () of 43 cataclysmic variable (CV) wh…
Three dimensional Doppler tomography
T. R. Marsh
Doppler tomography is a method to compute the emissivity distribution within the co-rotating frames of binary stars from observations of their emission line profiles at multiple or…
The SNIa Runaway LP 398-9: Detection of Circumstellar Material and Surface Rotation
Vedant Chandra, Hsiang-Chih Hwang, Nadia L. Zakamska +12
A promising progenitor scenario for Type Ia supernovae (SNeIa) is the thermonuclear detonation of a white dwarf in a close binary system with another white dwarf. After the primary…
Optical detection of the rapidly spinning white dwarf in V1460 Her
Ingrid Pelisoli, T. R. Marsh, R. P. Ashley +15
Accreting magnetic white dwarfs offer an opportunity to understand the interplay between spin-up and spin-down torques in binary systems. Monitoring of the white dwarf spin may rev…
Discovery and characterization of five new eclipsing AM CVn systems
J. van Roestel, T. Kupfer, M. J. Green +19
AM CVn systems are ultra-compact, helium-rich, accreting binaries with degenerate or semi-degenerate donors. We report the discovery of five new eclipsing AM CVn systems with orbit…
Found: a rapidly spinning white dwarf in LAMOST J024048.51+195226.9
Ingrid Pelisoli, T. R. Marsh, V. S. Dhillon +9
We present optical photometry of the cataclysmic variable LAMOST J024048.51+195226.9 taken with the high-speed, five-band CCD camera HiPERCAM on the 10.4 m Gran Telescopio Canarias…