49 citations · 50 across the 2 of their papers we have counts for
17 papers · 1 filter
An Halpha-selected sample of cataclysmic variables -- II. Implications for CV evolution
Magaretha L. Pretorius, Christian Knigge
We use an independent new sample of cataclysmic variables (CVs), constructed by selecting objects for Halpha emission, to constrain the properties of the intrinsic CV population. T…
An Halpha-selected sample of cataclysmic variables -- I. Observations of newly discovered systems
Magaretha L. Pretorius, Christian Knigge
Strong selection effects are present in observational samples of cataclysmic variables (CVs), complicating comparisons to theoretical predictions. The selection criteria used to de…
Dwarf nova oscillations and quasi-periodic oscillations in cataclysmic variables -- VI. Spin rates, propellering, and coherence
Brian Warner, Magaretha L. Pretorius
We examine published observations of dwarf nova oscillations (DNOs) on the rise and decline of outbursts and show that their rates of change are in reasonable agreement with those…
The space density of cataclysmic variables: constraints from the ROSAT North Ecliptic Pole Survey
M. L. Pretorius, C. Knigge, D. O'Donoghue +3
We use the ROSAT North Ecliptic Pole (NEP) survey to construct a small, but purely X-ray flux-limited sample of cataclysmic variable stars (CVs). The sample includes only 4 systems…
IGR J16194-2810: a new symbiotic X-ray binary
N. Masetti, R. Landi, M. L. Pretorius +7
We here report on the multiwavelength study which led us to the identification of X-ray source IGR J16194-2810 as a new Symbiotic X-ray Binary (SyXB), that is, a rare type of Low M…
Cool Companions to White Dwarf Stars from the Two Micron All Sky Survey All Sky Data Release
D. W. Hoard, S. Wachter, Laura K. Sturch +5
We present the culmination of our near-infrared survey of the optically spectroscopically identified white dwarf stars from the McCook & Sion catalog, conducted using photometric d…