112 citations · 693 across the 13 of their papers we have counts for
13 papers
An extremely metal-deficient globular cluster in the Andromeda Galaxy
S. S. Larsen, A. J. Romanowsky, J. P. Brodie +1
Globular clusters (GCs) are dense, gravitationally bound systems of thousands to millions of stars. They are preferentially associated with the oldest components of galaxies, and m…
How Accurately Can We Detect the Splashback Radius of Dark Matter Halos and its Correlation With Accretion Rate?
Enia Xhakaj, Benedikt Diemer, Alexie Leauthaud +5
The splashback radius () of dark matter halos has recently been detected using weak gravitational lensing and cross-correlations with galaxies. However, different metho…
Spatially Resolved Stellar Kinematics of the Ultra-Diffuse Galaxy Dragonfly 44: II. Constraints on Fuzzy Dark Matter
Asher Wasserman, Pieter van Dokkum, Aaron J. Romanowsky +9
Given the absence of directly detected dark matter (DM) as weakly interacting massive particles, there is strong interest in the possibility that DM is an ultra-light scalar field,…
Spatially-resolved stellar kinematics of the ultra diffuse galaxy Dragonfly 44. I. Observations, kinematics, and cold dark matter halo fits
Pieter van Dokkum, Asher Wasserman, Shany Danieli +8
We present spatially-resolved stellar kinematics of the well-studied ultra diffuse galaxy (UDG) Dragonfly 44, as determined from 25.3 hrs of observations with the Keck Cosmic Web I…
A Deficit of Dark Matter from Jeans Modeling of the Ultra-diffuse Galaxy NGC 1052-DF2
Asher Wasserman, Aaron J. Romanowsky, Jean Brodie +5
The discovery of the ultra-diffuse galaxy NGC 1052-DF2 and its peculiar population of star clusters has raised new questions about the connections between galaxies and dark matter…
The Dragonfly Nearby Galaxies Survey. V. HST/ACS Observations of 23 Low Surface Brightness Objects in the Fields of NGC1052, NGC1084, M96, and NGC4258
Yotam Cohen, Pieter van Dokkum, Shany Danieli +8
We present HST/ACS imaging of twenty-three very low surface brightness (=25-27.5) galaxies detected in the fields of four nearby galaxy groups. These objects were selected…
The SLUGGS Survey: A comparison of total-mass profiles of early-type galaxies from observations and cosmological simulations, to 4 effective radii
Sabine Bellstedt, Duncan A. Forbes, Aaron J. Romanowsky +11
We apply the Jeans Anisotropic MGE (JAM) dynamical modelling method to SAGES Legacy Unifying Globulars and GalaxieS (SLUGGS) survey data of early-type galaxies in the stellar mass…
Origins of ultra-diffuse galaxies in the Coma cluster - I. Constraints from velocity phase-space
Adebusola Alabi, Anna Ferré-Mateu, Aaron J. Romanowsky +8
We use Keck/DEIMOS spectroscopy to confirm the cluster membership of 16 ultra-diffuse galaxies (UDGs) in the Coma cluster, bringing the total number of spectroscopically con- firme…
Detailed abundance analysis of globular clusters in the Local Group: NGC 147, NGC 6822, and Messier 33
S. S. Larsen, J. P. Brodie, A. Wasserman +1
We present new abundance measurements for eleven GCs in the Local Group galaxies NGC 147, NGC 6822, and Messier 33. These are combined with previously published observations of fou…
Origins of ultra-diffuse galaxies in the Coma cluster II. Constraints from their stellar populations
Anna Ferre-Mateu, Adebusola Alabi, Duncan A. Forbes +8
In this second paper of the series, we study with new Keck/DEIMOS spectra the stellar populations of seven spectroscopically confirmed ultra-diffuse galaxies (UDGs) in the Coma clu…
The SLUGGS Survey: The Inner Dark Matter Density Slope of the Massive Elliptical Galaxy NGC 1407
Asher Wasserman, Aaron J. Romanowsky, Jean Brodie +7
We investigate the dark matter density profile of the massive elliptical galaxy, NGC 1407, by constructing spherically symmetric Jeans models of its field star and globular cluster…
2FGL J0846.0+2820: A new neutron star binary with a giant secondary and variable -ray emission
Samuel J. Swihart, Jay Strader, Tyrel J. Johnson +11
We present optical photometric and spectroscopic observations of the likely stellar counterpart to the unassociated \emph{Fermi}-Large Area Telescope (LAT) -ray source 2FGL J084…
The SLUGGS Survey: a catalog of over 4000 globular cluster radial velocities in 27 nearby early-type galaxies
Duncan A. Forbes, Adebusola Alabi, Jean P. Brodie +10
Here we present positions and radial velocities for over 4000 globular clusters (GCs) in 27 nearby early-type galaxies from the SLUGGS survey. The SLUGGS survey is designed to be r…