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Velocity-imaging the rapidly precessing planetary disc around the white dwarf HE 1349-2305 using Doppler tomography
Christopher J. Manser, Erik Dennihy, Boris T. Gänsicke +11
The presence of planetary material in white dwarf atmospheres, thought to be accreted from a dusty debris disc produced via the tidal disruption of a planetesimal, is common. Appro…
Formation of eccentric gas discs from sublimating or partially disrupted asteroids orbiting white dwarfs
David Trevascus, Daniel J. Price, Rebecca Nealon +3
Of the 21 known gaseous debris discs around white dwarfs, a large fraction of them display observational features that are well described by an eccentric distribution of gas. In th…
A test of the planet-star unipolar inductor for magnetic white dwarfs
N. Walters, J. Farihi, T. R. Marsh +7
Despite thousands of spectroscopic detections, only four isolated white dwarfs exhibit Balmer emission lines. The temperature inversion mechanism is a puzzle over 30 years old that…