14.6k citations · 34.4k across the 141 of their papers we have counts for
9 papers · 2 filters
Two Ultra-Faint Milky Way Stellar Systems Discovered in Early Data from the DECam Local Volume Exploration Survey
S. Mau, W. Cerny, A. B. Pace +56
We report the discovery of two ultra-faint stellar systems found in early data from the DECam Local Volume Exploration survey (DELVE). The first system, Centaurus I (DELVE J1238-40…
Uncovering the Orbit of the Hercules Dwarf Galaxy
Alexandra L. Gregory, Michelle L. M. Collins, Denis Erkal +6
We present new chemo--kinematics of the Hercules dwarf galaxy based on Keck II-- DEIMOS spectroscopy. Our 21 confirmed members have a systemic velocity of $v_{\mathrm{Herc}}=46.4\p…
A detailed study of Andromeda XIX, an extreme local analogue of ultra diffuse galaxies
Michelle L. M. Collins, Erik J. Tollerud, R. Michael Rich +5
With a central surface brightness of mag. per sq. arcsec, and half-light radius of ~kpc, Andromeda XIX (And XIX) is an extremely diffuse…
A Dwarf Disrupting -- Andromeda XXVII and the North West Stream
Janet Preston, Michelle L. M. Collins, Rodrigo A. Ibata +10
We present a kinematic and spectroscopic analysis of 38 red giant branch stars, in 7 fields, spanning the dwarf spheroidal galaxy Andromeda XXVII and the upper segment of the North…
A Correlated Search for Local Dwarf Galaxies in GALFA-HI and Pan-STARRS
Daniel DeFelippis, Mary Putman, Erik Tollerud
In recent years, ultrafaint dwarf (UFD) galaxies have been found through systematic searches of large optical surveys. However, the existence of Leo T, a nearby gas-rich dwarf, sug…
A profile in FIRE: resolving the radial distributions of satellite galaxies in the Local Group with simulations
Jenna Samuel, Andrew Wetzel, Erik Tollerud +9
While many tensions between Local Group (LG) satellite galaxies and LCDM cosmology have been alleviated through recent cosmological simulations, the spatial distribution of satelli…