129 citations · 1.8k across the 47 of their papers we have counts for
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The AIMSS Project III: The Stellar Populations of Compact Stellar Systems
Joachim Janz, Mark A. Norris, Duncan A. Forbes +11
In recent years, a growing zoo of compact stellar systems (CSSs) have been found whose physical properties (mass, size, velocity dispersion) place them between classical globular c…
Galactic archaeology of a thick disc: Excavating ESO 533-4 with VIMOS
S. Comerón, H. Salo, J. Janz +2
The formation mechanisms of thick discs are under discussion. Thick discs might have formed either at high redshift on a short time-scale or might have been built slowly over time.…
NGC 3628-UCD1: A possible Cen Analog Embedded in a Stellar Stream
Zachary G. Jennings, Aaron J. Romanowsky, Jean P. Brodie +6
Using Subaru/Suprime-Cam wide-field imaging and both Keck/ESI and LBT/MODS spectroscopy, we identify and characterize a compact star cluster, which we term NGC 3628-UCD1, embedded…
The Sensitivity of Harassment to Orbit: Mass Loss from Early-Type Dwarfs in Galaxy Clusters
Rory Smith, Ruben Sanchez-Janssen, Michael A. Beasley +11
We conduct a comprehensive numerical study of the orbital dependence of harassment on early-type dwarfs consisting of 168 different orbits within a realistic, Virgo-like cluster, v…
The scaling relations of early-type dwarf galaxies across a range of environments
Samantha J. Penny, Joachim Janz, Duncan A. Forbes +2
We present the results of a Keck-ESI study of dwarf galaxies across a range of environment: the Perseus Cluster, the Virgo Cluster, the NGC 1407 group, and the NGC 1023 group. Eigh…
Hiding in plain sight: record-breaking compact stellar systems in the Sloan Digital Sky Survey
Michael A. Sandoval, Richard P. Vo, Aaron J. Romanowsky +10
Motivated by the recent, serendipitous discovery of the densest known galaxy, M60-UCD1, we present two initial findings from a follow-up search, using the Sloan Digital Sky Survey,…
How elevated is the dynamical-to-stellar mass ratio of the ultra-compact dwarf S999?
Joachim Janz, Duncan A. Forbes, Mark A. Norris +4
Here we present new Keck ESI high-resolution spectroscopy and deep archival HST/ACS imaging for S999, an ultra-compact dwarf in the vicinity of M87, which was claimed to have an ex…