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The nearby magnetic cool DZ white dwarf PM J08186-3110
Adela Kawka, Stéphane Vennes, Nicole F. Allard +2
We present an analysis of photometric, spectroscopic and spectropolarimetric data of the nearby, cool, magnetic DZ white dwarf PM J08186-3110. High dispersion spectra show the pres…
Understanding the rotational variability of K2 targets. HgMn star KIC 250152017 and blue horizontal branch star KIC 249660366
J. Krticka, A. Kawka, Z. Mikulasek +6
Ultraprecise space photometry enables us to reveal light variability even in stars that were previously deemed constant. A large group of such stars show variations that may be rot…
The closest extremely low-mass white dwarf to the Sun
Adela Kawka, Jeffrey D. Simpson, Stephane Vennes +4
We present the orbit and properties of 2MASS J050051.85-093054.9, establishing it as the closest (d ~ 71 pc) extremely low mass white dwarf to the Sun. We find that this star is hy…
Clues to the origin and properties of magnetic white dwarfs
Adela Kawka
A significant fraction of white dwarfs possess a magnetic field with strengths ranging from a few kG up to about 1000 MG. However, the incidence of magnetism varies when the white…
Magnetic fields in isolated and interacting white dwarfs
Lilia Ferrario, D. T. Wickramasinghe, Adela Kawka
The magnetic white dwarfs (MWDs) are found either isolated or in interacting binaries. They divide into two groups: a high field group (0.1-1,000MegaGauss) comprising some 13% of a…