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Optical measurement of superluminal motion in the neutron-star merger GW170817
Kunal P. Mooley, Jay Anderson, Wenbin Lu
The afterglow of the binary neutron star merger GW170817 gave evidence for a structured relativistic jet and a link between such mergers and short gamma-ray bursts. Superluminal mo…
The JWST Resolved Stellar Populations Early Release Science Program I.: NIRCam Flux Calibration
Martha L. Boyer, Jay Anderson, Mario Gennaro +16
We use globular cluster data from the Resolved Stellar Populations Early Release Science (ERS) program to validate the flux calibration for the Near Infrared Camera (NIRCam) on the…
Measuring the Orbits of the Arches and Quintuplet Clusters using HST and Gaia: Exploring Scenarios for Star Formation Near the Galactic Center
Matthew W. Hosek, Tuan Do, Jessica R. Lu +4
We present new absolute proper motion measurements for the Arches and Quintuplet clusters, two young massive star clusters near the Galactic center. Using multi-epoch HST observati…
The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters. XXIII. Proper-motion catalogs and internal kinematics
M. Libralato, A. Bellini, E. Vesperini +17
A number of studies based on data collected by the () GO-13297 program "HST Legacy Survey of Galactic Globular Clusters: Shedding UV…
Hubble Space Telescope Proper Motion (HSTPROMO) Catalogs of Galactic Globular Clusters. VII. Energy Equipartition
Laura L. Watkins, Roeland P. van der Marel, Mattia Libralato +3
We examine the degree of energy equipartition in 9 Galactic globular clusters using proper motions measured with the Hubble Space Telescope. For most clusters in the sample, this i…
The Hubble Space Telescope Survey of M31 Satellite Galaxies I. RR Lyrae-based Distances and Refined 3D Geometric Structure
Alessandro Savino, Daniel R. Weisz, Evan D. Skillman +33
We measure homogeneous distances to M31 and 38 associated stellar systems (16.8 6.0), using time-series observations of RR Lyrae stars taken as part of the Hubbl…