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Stellar Proper Motions in the Orion Nebula Cluster
Dongwon Kim, Jessica R. Lu, Quinn Konopacky +5
The Orion Nebula Cluster (ONC) is the nearest site of ongoing massive star formation, which allows us to study the kinematics and dynamics of the region in detail and constrain sta…
The Proper Motion Field Along the Magellanic Bridge: a New Probe of the LMC-SMC Interaction
Paul Zivick, Nitya Kallivayalil, Gurtina Besla +6
We present the first detailed kinematic analysis of the proper motions (PMs) of stars in the Magellanic Bridge, from both the \textit{Gaia} Data Release 2 catalog and from \textit{…
HALO7D II: The Halo Velocity Ellipsoid and Velocity Anisotropy with Distant Main Sequence Stars
Emily C. Cunningham, Alis J. Deason, Robyn E. Sanderson +7
The Halo Assembly in Lambda-CDM: Observations in 7 Dimensions (HALO7D) dataset consists of Keck II/DEIMOS spectroscopy and Hubble Space Telescope-measured proper motions of Milky W…
The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters - XVII. Public Catalogue Release
D. Nardiello, M. Libralato, G. Piotto +13
In this paper we present the astro-photometric catalogues of 56 globular clusters and one open cluster. Astrometry and photometry are mainly based on images collected within the "H…
The Unusual Initial Mass Function of the Arches Cluster
M. W. Hosek, J. R. Lu, J. Anderson +5
As a young massive cluster in the Central Molecular Zone, the Arches cluster is a valuable probe of the stellar Initial Mass Function (IMF) in the extreme Galactic Center environme…
A Multi-Mass Velocity Dispersion Model of 47 Tucanae Indicates No Evidence for an Intermediate Mass Black Hole
Christopher Mann, Harvey Richer, Jeremy Heyl +6
In this paper, we analyze stellar proper motions in the core of the globular cluster 47 Tucanae to explore the possibility of an intermediate-mass black hole (IMBH) influence on th…