activity
20092023
most citedThe GALAH Survey: Observational Overview and Gaia DR1 companion

214 citations · 2.5k across the 76 of their papers we have counts for

collaborators

74 papers

astro-ph.EP2023★ 7 cited

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…

astro-ph.EP2023★ 6 cited

Multi-wavelength aperture polarimetry of debris disc host stars

Jonathan P. Marshall, Daniel V. Cotton, Kimberly Bott +3

Debris discs around main sequence stars have been extensively characterised from infrared to millimetre wavelengths through imaging, spectroscopic, and total intensity (scattered l…

astro-ph.EP2023★ 19 cited

Stirred but not shaken: a multi-wavelength view of HD 16743's debris disc

Jonathan P. Marshall, Julien Milli, Elodie Choquet +6

Planetesimals -- asteroids and comets -- are the building blocks of planets in protoplanetary discs and the source of dust, ice and gas in debris discs. Along with planets they com…

astro-ph.EP2023★ 8 cited

A Mixed Stirring Mechanism for Debris Discs with Giant and Dwarf Planetary Perturbations

Marco A. Muñoz-Gutiérrez, Jonathan P. Marshall, Antonio Peimbert

Debris discs consist of belts of bodies ranging in size from dust grains to planetesimals; these belts are visible markers of planetary systems around other stars that can reveal t…

astro-ph.EP2022★ 8 cited

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…

astro-ph.EP2022★ 14 cited

The high-albedo, low polarization disk around HD 114082 harbouring a Jupiter-sized transiting planet

N. Engler, J. Milli, R. Gratton +36

We present new optical and near-IR images of debris disk around the F-type star HD 114082. We obtained direct imaging observations and analysed the TESS photometric time series dat…