1k citations · 4.3k across the 89 of their papers we have counts for
15 papers · 1 filter
Obscured clusters. II. GLIMPSE-C02 - A new metal rich globular cluster in the Milky Way
R. Kurtev, V. D. Ivanov, J. Borissova +1
The estimated total number of Milky Way globulars is 160+-20. The question of whether there are any more undiscovered globular clusters in the Milky Way is particularly relevant wi…
The young Galactic star cluster [DBS2003]179
J. Borissova, V. D. Ivanov, M. M. Hanson +4
Recent near- and mid-infrared surveys have brought evidence that the Milky Way continues to form massive clusters. We carry out a program to determine the basic physical properties…
The Globular Cluster M15. I. Identification, Discovery, and Period Determination of Variable Stars
T. M. Corwin, J. Borissova, P. B. Stetson +4
We present new CCD photometry for variables in the globular cluster M15. Our photometry was obtained using both the image subtraction package ISIS and DAOPHOT/ALLFRAME. The d…
Obscured clusters.I. GLIMPSE30 - Young Milky Way Star Cluster Hosting Wolf-Rayet Stars
R. Kurtev, J. Borissova, L. Georgiev +2
Young massive clusters are perfect astrophysical laboratories for study of massive stars. Clusters with Wolf-Rayet (WR) stars are of special importance, since this enables us to st…
Infrared Spectroscopy of the Ultra Low Mass Binary Oph 162225-240515
Alexis Brandeker, Ray Jayawardhana, Valentin D. Ivanov +1
Binary properties are an important diagnostic of the star and brown dwarf formation processes. While wide binaries appear to be rare in the sub-stellar regime, recent observations…
Red giant branch stars as probes of stellar populations. II. Properties of the newly discovered globular cluster GLIMPSE-C01
Valentin D. Ivanov, Radostin Kurtev, Jordanka Borissova
Deep near infrared photometry of the newly discovered Galactic globular Cluster GLIMPSE-C01 is reported. We derived for the first time the metal abundance of this object from the s…