55 citations · 68 across the 2 of their papers we have counts for
4 papers · 1 filter
On the empirical evidence for the existence of ultra-massive white dwarfs
S. Vennes, A. Kawka
We re-examine the evidence for the existence of ultra-massive (M > 1.1 M_sun) white dwarfs based on gravitational redshift of white dwarfs in common proper motion binaries or in cl…
Orbital Parameters and Chemical Composition of Four White Dwarfs in Post-Common Envelope Binaries
Adela Kawka, Stephane Vennes, Jean Dupuis +2
We present FUSE observations of the hot white dwarfs in the post-common envelope binaries Feige 24, EUVE J0720-317, BPM 6502, and EUVE J2013+400. The spectra show numerous photosph…
CPD-20 1123 (Albus 1) is a bright He-B Subdwarf
Stephane Vennes, Adela Kawka, J. Allyn Smith
Based on photometric and astrometric data it has been proposed that Albus 1 (also known as CPD-20 1123) might be a hot white dwarf similar to G191-B2B or, alternatively, a hot subd…
Spectropolarimetric Survey of Hydrogen-rich White Dwarf Stars
A. Kawka, S. Vennes, G. D. Schmidt +2
We have conducted a survey of 61 southern white dwarfs searching for magnetic fields using Zeeman spectropolarimetry. Our objective is to obtain a magnetic field distribution for t…