activity
20052023
most citedA Method for Measuring (Slopes of) the Mass Profiles of Dwarf Spheroidal Galaxies

655 citations · 7.9k across the 89 of their papers we have counts for

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Showing 2017 · astro-ph.GAShow all

6 papers · 2 filters

astro-ph.GA2017★ 28 cited

A Magellan M2FS Spectroscopic Survey of Galaxies at 5.5<z<6.8: Program Overview and a Sample of the Brightest Lyman-alpha Emitters

Linhua Jiang, Yue Shen, Fuyan Bian +16

We present a spectroscopic survey of high-redshift, luminous galaxies over four square degrees on the sky, aiming to build a large and homogeneous sample of Ly emitters (LAEs) a…

astro-ph.GA2017★ 3 cited

Magellan/M2FS Spectroscopy of Galaxy Clusters: Stellar Population Model and Application to Abell 267

Evan Tucker, Matthew G. Walker, Mario Mateo +4

We report the results of a pilot program to use the Magellan/M2FS spectrograph to survey the galactic populations and internal kinematics of galaxy clusters. For this initial study…

astro-ph.GA2017★ 50 cited

Space Motions of the Dwarf Spheroidal Galaxies Draco and Sculptor based on HST Proper Motions with ~10-year Time Baseline

Sangmo Tony Sohn, Ekta Patel, Gurtina Besla +5

We present new proper motion (PM) measurements of the dwarf spheroidal galaxies (dSphs) Draco and Sculptor using multi-epoch images obtained with the Hubble Space Telescope ACS/WFC…

astro-ph.GA2017★ 50 cited

The binary fraction of stars in dwarf galaxies: the case of Leo II

Meghin Spencer, Mario Mateo, Matthew Walker +4

We combine precision radial velocity data from four different published works of the stars in the Leo II dwarf spheroidal galaxy. This yields a dataset that spans 19 years, has 14…

astro-ph.GA2017★ 7 cited

An Expanded Chemo-dynamical Sample of Red Giants in the Bar of the Large Magellanic Cloud

Ying-Yi Song, Mario Mateo, Matthew G. Walker +1

We report new spectroscopic observations obtained with the Michigan/Magellan Fiber System of 308 red giants (RGs) located in two fields near the photometric center of the bar of th…

astro-ph.GA2017★ 44 cited

A multi-epoch kinematic study of the remote dwarf spheroidal galaxy Leo II

Meghin Spencer, Mario Mateo, Matthew Walker +1

We conducted a large spectroscopic survey of 336 red giants in the direction of the Leo II dwarf galaxy using Hectochelle on the MMT, and conclude that 175 of them are members base…