Now showing items 11-14 of 14
Gauging the Helium Abundance of the Galactic Bulge RR Lyrae Stars
(Institute of Physics Publishing, 2018)
We report the first estimate of the He abundance of the population of RR Lyrae stars in the Galactic bulge. This is done by comparing the recent observational data with the latest models. We use the large samples of ab-type ...
New VVV Survey Globular Cluster Candidates in the Milky Way Bulge
(Institute of Physics Publishing, 2017-11)
It is likely that a number of Galactic globular clusters remain to be discovered, especially toward the Galactic bulge. High stellar density combined with high and differential interstellar reddening are the two major ...
Proper motions in the VVV Survey: Results for more than 15 million stars across NGC 6544
(EDP Sciences, 2017)
Context. In the last six years, the VISTA Variable in the Vía Láctea (VVV) survey mapped 562 sq. deg. across the bulge and southern disk of the Galaxy. However, a detailed study of these regions, which includes ∼36 globular ...
Chemically Dissected Rotation Curves of the Galactic Bulge from Main-sequence Proper Motions
(Institute of Physics Publishing, 2018-05)
We report results from an exploratory study implementing a new probe of Galactic evolution using archival Hubble Space Telescope imaging observations. Precise proper motions are combined with photometric relative metallicity ...