178 citations · 1.2k across the 42 of their papers we have counts for
7 papers · 1 filter
A Universal Transition in Atmospheric Diffusion for Hot Subdwarfs Near 18,000 K
T. M. Brown, J. M. Taylor, S. Cassisi +6
In the color-magnitude diagrams (CMDs) of globular clusters, when the locus of stars on the horizontal branch (HB) extends to hot temperatures, discontinuities are observed at colo…
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…
Hubble Space Telescope Proper Motion (HSTPROMO) Catalogs of Galactic Globular Clusters. V. The rapid rotation of 47 Tuc traced and modeled in three dimensions
A. Bellini, P. Bianchini, A. L. Varri +5
High-precision proper motions of the globular cluster 47 Tuc have allowed us to measure for the first time the cluster rotation in the plane of the sky and the velocity anisotropy…
The State-of-the-Art HST Astro-Photometric Analysis of the core of ωCentauri. III. The Main Sequence's Multiple Populations Galore
A. Bellini, A. P. Milone, J. Anderson +5
We take advantage of the exquisite quality of the Hubble Space Telescope 26-filter astro-photometric catalog of the core of Omega Cen presented in the first paper of this series an…
Relativistic deflection of background starlight measures the mass of a nearby white dwarf star
Kailash C. Sahu, Jay Anderson, Stefano Casertano +12
Gravitational deflection of starlight around the Sun during the 1919 total solar eclipse provided measurements that confirmed Einstein's general theory of relativity. We have used…
The State-of-the-Art HST Astro-Photometric Analysis of the core of Centauri. II. Differential-Reddening Map
A. Bellini, J. Anderson, R. P. van der Marel +3
We take advantage of the exquisite quality of the Hubble Space Telescope astro-photometric catalog of the core of wCen presented in the first paper of this series to derive a high-…