728 citations · 15.3k across the 178 of their papers we have counts for
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Reconstructing the orbits of Milky Way dwarf galaxies: A Large Magellanic Cloud perspective
Alberto Manuel Martínez-García, Andrés del Pino, Roeland P. van der Marel +14
The orbital histories of the dwarf satellites of the Milky Way (MW) are key to understanding their evolution and placing their present-day properties in a dynamical context. We pre…
Encounters Between M33 and Present-Day M31 Satellites Hint at a Previous Group Accretion
Ekta Patel, Paul Bennet, Sangmo Tony Sohn +2
This work investigates whether two known Andromeda (M31) satellites, Pisces (LGS 3) and Andromeda XVI, have interacted with M33, M31's most massive satellite. CDM predictions im…
A Galactic Transformation -- Understanding the SMC's Structural and Kinematic Disequilibrium
Himansh Rathore, Gurtina Besla, Roeland P. van der Marel +1
The SMC is in disequilibrium. Gas line-of-sight (LoS) velocity maps show a gradient of km s, generally interpreted as a rotating gas disk consistent with the Tully-…
HSTPROMO Internal Proper Motion Kinematics of Dwarf Spheroidal Galaxies: I. Velocity Anisotropy and Dark Matter Cusp Slope of Draco
Eduardo Vitral, Roeland P. van der Marel, Sangmo Tony Sohn +8
We analyze four epochs of HST imaging over 18 years for the Draco dwarf spheroidal galaxy. We measure precise proper motions (PMs) for hundreds of stars and combine these with exis…
Satellite group infall into the Milky Way: exploring the Crater-Leo case with new HST proper motions
Mariana P. Júlio, Marcel S. Pawlowski, Sangmo Tony Sohn +3
Context. Within Cold Dark Matter (CDM) simulations, Milky Way-like galaxies accrete some of their satellite galaxies in groups of 3-5 members rather than individually. It wa…
The Low-Mass Stellar Initial Mass Function in Nearby Ultrafaint Dwarf Galaxies
Carrie Filion, Rosemary F. G. Wyse, Hannah Richstein +3
The stellar initial mass function (IMF) describes the distribution of stellar masses that form in a given star formation event. The long main-sequence lifetimes of low-mass stars m…