101 citations · 891 across the 56 of their papers we have counts for
6 papers · 1 filter
Systematic determination of dust properties for a sample of 133 spatially resolved debris discs
J. P. Marshall, S. Hengst, R. Young +6
Determination of the composition and size distribution of dust grains in debris discs is strongly dependent on constraining the underlying spatial distribution of that dust through…
Sudden extreme obscuration of a Sun-like main-sequence star: evolution of the circumstellar dust around ASASSN-21qj
Jonathan P. Marshall, Steve Ertel, Francisca Kemper +6
ASASSN-21qj is a distant Sun-like star that recently began an episode of deep dimming events after no prior recorded variability. Here we examine archival and newly obtained optica…
Evidence for the disruption of a planetary system during the formation of the Helix Nebula
Jonathan P. Marshall, Steve Ertel, Eric Birtcil +5
The persistence of planetary systems after their host stars evolve into their post-main sequence phase is poorly constrained by observations. Many young white dwarf systems exhibit…
Polarimetric and radiative transfer modelling of HD 172555
Jonathan P. Marshall, Daniel V. Cotton, Peter Scicluna +3
The debris disc around HD 172555 was recently imaged in near-infrared polarised scattered light by the Very Large Telescope's Spectro-Polarimetric High-contrast Exoplanet REsearch…
Understanding discs in binary YSOs: detailed modelling of VV CrA
P. Scicluna, S. Wolf, T. Ratzka +6
Given that a majority of stars form in multiple systems, in order to fully understand the star- and planet-formation processes we must seek to understand them in multiple stellar s…
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…