365 citations · 2k across the 34 of their papers we have counts for
10 papers · 1 filter
The globular clusters and star formation history of the isolated, quiescent ultra-diffuse galaxy DGSAT I
Steven R. Janssens, Aaron J. Romanowsky, Roberto Abraham +6
We investigate the isolated, quiescent ultra-diffuse galaxy (UDG) DGSAT I and its globular cluster (GC) system using two orbits of Hubble Space Telescope Advanced Camera for Survey…
The Dragonfly Spectral Line Mapper: Design and First Light
Seery Chen, Deborah M. Lokhorst, Jeff Shen +4
The Dragonfly Spectral Line Mapper (DSLM) is the latest evolution of the Dragonfly Telephoto Array, which turns it into the world's most powerful wide-field spectral line imager. T…
Distributed Aperture Telescopes and the Dragonfly Telephoto Array
Roberto G. Abraham, Pieter G. van Dokkum, Deborah M. Lokhorst +4
Telescope arrays allow high-performance wide-field imaging systems to be built more quickly and at lower cost than conventional telescopes. Distributed aperture telescopes (the pre…
The pathfinder Dragonfly Spectral Line Mapper: Pushing the limits for ultra-low surface brightness spectroscopy
Deborah M. Lokhorst, Seery Chen, Imad Pasha +4
The pathfinder Dragonfly Spectral Line Mapper is a distributed aperture telescope based off of the Dragonfly Telephoto Array with additional instrumentation (the Dragonfly "Filter-…
A trail of dark matter-free galaxies from a bullet dwarf collision
Pieter van Dokkum, Zili Shen, Michael A. Keim +8
The ultra-diffuse galaxies DF2 and DF4 in the NGC1052 group share several unusual properties: they both have large sizes, rich populations of overluminous and large globular cluste…
Across the Green Valley with HST grisms: colour evolution, crossing time-scales and the growth of the red sequence at
Gaël Noirot, Marcin Sawicki, Roberto Abraham +6
We measure the colour evolution and quenching time-scales of galaxies across the green valley. We derive rest-frame colours and select blue-cloud, green-valley…