51 citations · 232 across the 10 of their papers we have counts for
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Seven white dwarfs with circumstellar gas discs II: Tracing the composition of exoplanetary building blocks
L. K. Rogers, A. Bonsor, S. Xu +8
This second paper presents an in-depth analysis of the composition of the planetary material that has been accreted onto seven white dwarfs with circumstellar dust and gas emission…
Seven white dwarfs with circumstellar gas discs I: white dwarf parameters and accreted planetary abundances
L. K. Rogers, A. Bonsor, S. Xu +9
Observations of planetary material polluting the atmospheres of white dwarfs are an important probe of the bulk composition of exoplanetary material. Medium- and high-resolution op…
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…
WD 1145+017: Optical Activity During 2016-2017 and Limits on the X-Ray Flux
S. Rappaport, B. L. Gary, A. Vanderburg +3
WD 1145+017 was observed from 2016 November through 2017 June for the purpose of further characterizing the transit behavior of the dusty debris clouds orbiting this white dwarf. T…
Once in a blue moon: detection of 'bluing' during debris transits in the white dwarf WD1145+017
N. Hallakoun, S. Xu, D. Maoz +16
The first transiting planetesimal orbiting a white dwarf was recently detected in K2 data of WD1145+017 and has been followed up intensively. The multiple, long, and variable trans…
An Extreme-AO Search for Giant Planets around a White Dwarf --VLT/SPHERE performance on a faint target GD 50
S. Xu, S. Ertel, Z. Wahhaj +3
CONTEXT. Little is known about the planetary systems around single white dwarfs although there is strong evidence that they do exist. AIMS. We performed a pilot study with the extr…