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A dearth of small particles in the transiting material around the white dwarf WD 1145+017
S. Xu, S. Rappaport, R. van Lieshout +35
White dwarf WD 1145+017 is orbited by several clouds of dust, possibly emanating from actively disintegrating bodies. These dust clouds reveal themselves through deep, broad, and e…
Periodic optical variability and debris accretion in white dwarfs: a test for a causal connection
Na'ama Hallakoun, Dan Maoz, Eric Agol +9
Recent Kepler photometry has revealed that about half of white dwarfs (WDs) have periodic, low-level (~ 1e-4 - 1e-3), optical variations. Hubble Space Telescope (HST) ultraviolet s…
Pressure Distortion of the H-He Collision-Induced Absorption at the Photosphere of Cool White Dwarf Stars
Simon Blouin, Piotr M. Kowalski, Patrick Dufour
Collision-induced absorption (CIA) from molecular hydrogen is a dominant opacity source in the atmosphere of cool white dwarfs. It results in a significant flux depletion in the ne…