activity
19942023
most citedThe Quadruple Gravitational Lens PG1115+080: Time Delays and Models

244 citations · 1.3k across the 24 of their papers we have counts for

collaborators

25 papers

astro-ph.GA2023★ 18 cited

Magellan/M2FS and MMT/Hectochelle Spectroscopy of Dwarf Galaxies and Faint Star Clusters within the Galactic Halo

Matthew G. Walker, Nelson Caldwell, Mario Mateo +5

We present spectroscopic data for 16369 stellar targets within and/or toward 38 dwarf spheroidal galaxies and faint star clusters within the Milky Way halo environment. All spectra…

astro-ph.GA2023★ 1 cited

Abundance Analysis of Stars at Large Radius in the Sextans Dwarf Spheroidal Galaxy

Ian U. Roederer, Andrew B. Pace, Vinicius M. Placco +5

We present stellar parameters and chemical abundances of 30 elements for five stars located at large radii (3.5-10.7 times the half-light radius) in the Sextans dwarf spheroidal ga…

astro-ph.GA2023★ 7 cited

Investigating the Dark Matter Halo of NGC 5128 using a Discrete Dynamical Model

Antoine Dumont, Anil C. Seth, Jay Strader +7

As the nearest accessible massive early-type galaxy, NGC 5128 presents an exceptional opportunity to measure dark matter halo parameters for a representative elliptical galaxy. Her…

astro-ph.GA2023★ 34 cited

Metallicity Distribution Functions of 13 Ultra-Faint Dwarf Galaxy Candidates from Hubble Space Telescope Narrowband Imaging

Sal Wanying Fu, Daniel R. Weisz, Else Starkenburg +10

We present uniformly measured stellar metallicities for 463 stars in 13 Milky Way (MW) ultra-faint dwarf galaxies (UFDs; to ) using narrowband CaHK (F395N) imagi…

astro-ph.SR2023★ 31 cited

Fast rotating Blue Stragglers prefer loose clusters

Francesco R. Ferraro, Alessio Mucciarelli, Barbara Lanzoni +9

Blue stragglers are anomalously luminous core hydrogen-burning stars formed through mass-transfer in binary/triple systems and stellar collisions. Their physical and evolutionary p…

astro-ph.GA2023★ 1 cited

The Kinematics, Metallicities, and Orbits of Six Recently Discovered Galactic Star Clusters with Magellan/M2FS Spectroscopy

Andrew B. Pace, Sergey E. Koposov, Matthew G. Walker +9

We present Magellan/M2FS spectroscopy of four recently discovered Milky Way star clusters (Gran 3/Patchick~125, Gran 4, Garro 01, LP 866) and two newly discovered open clusters (Ga…