302 citations · 561 across the 6 of their papers we have counts for
8 papers
Streaming motion in Leo I
Bodhisattva Sen, Moulinath Banerjee, Michael Woodroofe +2
Whether a dwarf spheroidal galaxy is in equilibrium or being tidally disrupted by the Milky Way is an important question for the study of its dark matter content and distribution.…
Clean Kinematic Samples in Dwarf Spheroidals: An Algorithm for Evaluating Membership and Estimating Distribution Parameters When Contamination is Present
Matthew G. Walker, Mario Mateo, Edward W. Olszewski +2
(abridged) We develop an algorithm for estimating parameters of a distribution sampled with contamination, employing a statistical technique known as ``expectation maximization'' (…
Velocity Dispersion Profiles of Seven Dwarf Spheroidal Galaxies
Matthew G. Walker, Mario Mateo, Edward W. Olszewski +4
We present stellar velocity dispersion profiles for seven Milky Way dwarf spheroidal (dSph) satellite galaxies. We have measured 8394 line-of-sight velocities (+/- 2.5 km/s) for 68…
The Michigan/MIKE Fiber System Survey of Stellar Radial Velocities in Dwarf Spheroidal Galaxies: Acquisition and Reduction of Data
Matthew G. Walker, Mario Mateo, Edward W. Olszewski +3
We introduce a stellar velocity survey of dwarf spheroidal galaxies, undertaken using the Michigan/MIKE Fiber System (MMFS) at the Magellan/Clay 6.5 m telescope at Las Campanas Obs…
A Kiefer--Wolfowitz comparison theorem for Wicksell's problem
Xiao Wang, Michael Woodroofe
We extend the isotonic analysis for Wicksell's problem to estimate a regression function, which is motivated by the problem of estimating dark matter distribution in astronomy. The…
On Kinematic Substructure in the Sextans Dwarf Spheroidal Galaxy
Matthew G. Walker, Mario Mateo, Edward W. Olszewski +3
We present multifiber echelle radial velocity results for 551 stars in the Sextans dwarf spheroidal galaxy and identify 294 stars as probable Sextans members. The projected velocit…