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Detectable close-in planets around white dwarfs through late unpacking
Dimitri Veras, Boris T. Gaensicke
Although 25%-50% of white dwarfs (WDs) display evidence for remnant planetary systems, their orbital architectures and overall sizes remain unknown. Vibrant close-in (~1 Solar radi…
Discovery of ZZ Cetis in detached white dwarf plus main-sequence binaries
S. Pyrzas, B. T. Gaensicke, J. J. Hermes +12
We present the first results of a dedicated search for pulsating white dwarfs (WDs) in detached white dwarf plus main-sequence binaries. Candidate systems were selected from a cata…
Orbital periods of cataclysmic variables identified by the SDSS. IX. NTT photometry of eight eclipsing and three magnetic systems
John Southworth, C. Tappert, B. T. Gaensicke +1
We report the discovery of eclipses and the first orbital period measurements for four cataclysmic variables, plus the first orbital period measurements for one known eclipsing and…
Analysis of cool DO-type white dwarfs from the Sloan Digital Sky Survey Data Release 10
N. Reindl, T. Rauch, K. Werner +3
We report on the identification of 22 new cool DO-type white dwarfs (WD) detected in Data Release 10 (DR10) of the Sloan Digital Sky Survey (SDSS). Among them, we found one more me…
The frequency and infrared brightness of circumstellar discs at white dwarfs
M. Rocchetto, J. Farihi, B. T. Gaensicke +1
White dwarfs whose atmospheres are polluted by terrestrial-like planetary debris have become a powerful and unique tool to study evolved planetary systems. This paper presents resu…
Hydrogen delivery onto white dwarfs from remnant exo-Oort cloud comets
Dimitri Veras, Andrew Shannon, Boris T. Gaensicke
The origin of trace hydrogen in white dwarfs (WDs) with He-dominated atmospheres is a long-standing problem, one that cannot satisfactorily be explained by the historically-favoure…