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Hunting For Eclipses: High Speed Observations of Cataclysmic Variables
Liam K Hardy, Martin J McAllister, Vik S Dhillon +12
We present new time-resolved photometry of 74 cataclysmic variables (CVs), 47 of which are eclipsing. 13 of these eclipsing systems are newly discovered. For all 47 eclipsing syste…
The Gaia DR1 Mass-Radius Relation for White Dwarfs
P. -E. Tremblay, N. Gentile-Fusillo, R. Raddi +8
The Gaia Data Release 1 (DR1) sample of white dwarf parallaxes is presented, including 6 directly observed degenerates and 46 white dwarfs in wide binaries. This data set is combin…
Using Gaussian processes to model light curves in the presence of flickering: the eclipsing cataclysmic variable ASASSN-14ag
M. J. McAllister, S. P. Littlefair, V. S. Dhillon +10
The majority of cataclysmic variable (CV) stars contain a stochastic noise component in their light curves, commonly referred to as flickering. This can significantly affect the mo…
Long-term eclipse timing of white dwarf binaries: an observational hint of a magnetic mechanism at work
M. C. P. Bours, T. R. Marsh, S. G. Parsons +18
We present a long-term programme for timing the eclipses of white dwarfs in close binaries to measure apparent and/or real variations in their orbital periods. Our programme includ…
An irradiated brown-dwarf companion to an accreting white dwarf
Juan V. Hernández Santisteban, Christian Knigge, Stuart P. Littlefair +7
Brown dwarfs and giant planets orbiting close to a host star are subjected to significant irradiation that can modify the properties of their atmospheres. In order to test the atmo…
GW Librae: A unique laboratory for pulsations in an accreting white dwarf
O. Toloza, B. T. Gaensicke, J. J. Hermes +22
Non-radial pulsations have been identified in a number of accreting white dwarfs in cataclysmic variables. These stars offer insight into the excitation of pulsation modes in atmos…