97 citations · 287 across the 16 of their papers we have counts for
16 papers
Stellar collisions in globular clusters: the origin of multiple stellar populations
Valery Kravtsov, Sami Dib, Francisco A. Calderon +1
Two generations of stars, G1 and G2, typically populate Galactic globular clusters (GCs). The origin of G2 stars is unclear. We uncover two empirical dependencies between GC charac…
The structure and characteristic scales of the HI gas in galactic disks
Sami Dib, Jonathan Braine, Maheswar Gopinathan +9
The spatial distribution of the HI gas in galaxies holds important clues on the physical processes that shape the structure and dynamics of the interstellar medium (ISM). In this w…
Spectrophotometry of asteroids 32 Pomona, 145 Adeona, 704 Interamnia, 779 Nina, 330825, and 2012 QG42 and laboratory study of possible analog samples
Vladimir V. Busarev, Sergey I. Barabanov, Vyacheslav S. Rusakov +2
Six asteroids including two NEAs, one of which is PHA, accessible for observation in September 2012 were investigated using a low-resolution spectrophotometry in the range 0.35-0.9…
Classical Cepheids and the spiral structure of the Milky Way
A. K. Dambis, L. N. Berdnikov, Yu. N. Efremov +7
We use the currently most complete collection of reliable Cepheid positions (565 stars) out to ~5 kpc based mostly on our photometric data to outline the spiral pattern of our Gala…
RR Lyrae variables: visual and infrared luminosities, intrinsic colours, and kinematics
A. K. Dambis, L. N. Berdnikov, A. Y. Kniazev +4
We use UCAC4 proper motions and WISE W1-band apparent magnitudes intensity-mean for almost 400 field RR Lyrae variables to determine the parameters of the velocity distribution of…
Strong radial segregation between sub-populations of evolutionary homogeneous stars in the Galactic globular cluster NGC 6752
V. Kravtsov, G. Alcaino, G. Marconi +1
We investigate the new and still poorly studied matter of so-called multiple stellar populations (MSPs) in Galactic globular clusters (GGCs). Studying MSPs and their accumulated da…