69 citations · 377 across the 23 of their papers we have counts for
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Star Clusters in the Ultraviolet
Annapurni Subramaniam, Samyaday Choudhury, Richard de Grijs +5
Ultraviolet (UV) observations provide a powerful window into the hot and evolved stellar populations that shape the structure, evolution and integrated light of star clusters. Beca…
Dynamical Evolution of Four Old Galactic Open Clusters traced by their constituent stars with \textit{Gaia} DR3
Shanmugha Balan, Khushboo K Rao, Kaushar Vaidya +2
We investigate the evolutionary stages of four open clusters, Berkeley 39, Collinder 261, NGC 6819, and NGC 7789, of ages ranging from 1.6 -- 6 Gyr. These clusters have previously…
UOCS-XII. A study of open cluster NGC 6940 using UVIT/AstroSat: cluster properties and exotic populations
Anju Panthi, Kaushar Vaidya
We study an open cluster NGC 6940 using \textit{AstroSat}/UVIT data and other archival data. This is an intermediate age cluster ( 1 Gyr), located at about 770 pc distance, h…
Determination of dynamical ages of open clusters through the A parameter -- II
Khushboo K. Rao, Kaushar Vaidya, Manan Agarwal +2
Blue straggler stars (BSS), one of the most massive members of star clusters, have been used for over a decade to investigate mass segregation and estimate the dynamical ages of gl…
Hot Stellar Populations of Berkeley 39 using Swift/UVOT
Komal Chand, Khushboo Kunwar Rao, Kaushar Vaidya +1
Open clusters are excellent tools to probe the history of the Galactic disk and properties of star formation. In this work, we present a study of an old age open cluster Berkley 39…
Discovery of double BSS sequences in the old Galactic open cluster Berkeley 17
Khushboo K Rao, Souradeep Bhattacharya, Kaushar Vaidya +1
Blue straggler stars (BSS) are peculiar objects which normally appear as a single broad sequence along the extension of the main sequence. Only four globular clusters (GCs) have be…
A EDR3 search for tidal tails in disintegrating open clusters
Souradeep Bhattacharya, Khushboo K. Rao, Manan Agarwal +2
We carry out a search for tidal tails in a sample of open clusters with known relatively elongated morphology. We identify the member stars of these clusters from the precise astro…
UOCS-VIII. UV Study of the open cluster NGC 2506 using ASTROSAT
Anju Panthi, Kaushar Vaidya, Vikrant Jadhav +4
We study an intermediate-age open cluster NGC 2506 using the \textit{ASTROSAT}/UVIT data and other archival data. We identified 2175 cluster members using a machine learning-based…
Characterization of hot populations of Melotte 66 open cluster using Swift/UVOT
K. K. Rao, K. Vaidya, M. Agarwal +3
Ultraviolet (UV) wavelength observations have made a significant contribution to our understanding of hot stellar populations of star clusters. Multi-wavelength spectral energy dis…
Tidal tails in the disintegrating open cluster NGC 752
Souradeep Bhattacharya, Manan Agarwal, Khushboo K. Rao +1
We utilize the robust membership determination algorithm, ML-MOC, on the precise astrometric and deep photometric data from Gaia Early Data Release 3 within a region of radius 5$^{…
Determination of dynamical ages of open clusters through the A parameter -- I
Khushboo K. Rao, Kaushar Vaidya, Manan Agarwal +1
The sedimentation level of blue straggler stars (BSS) has been shown to be a great tool to investigate the dynamical states of globular clusters (GCs). The area enclosed between th…
Blue Straggler Populations of Seven Open Clusters with Gaia DR2
Kaushar Vaidya, Khushboo K. Rao, Manan Agarwal +1
Blue straggler stars (BSS) are well studied in globular clusters but their systematic study with secure membership determination is lacking in open clusters. We use Gaia DR2 data t…
The blue straggler population of the old open cluster Berkeley 17
Souradeep Bhattacharya, Kaushar Vaidya, W. P. Chen +1
Blue Straggler Stars (BSSs) are observed in Galactic globular clusters and old open clusters. The radial distribution of BSSs has been used to diagnose the dynamical evolution of g…
Star formation toward the H~II region IRAS 10427-6032
Kaushar Vaidya, Souradeep Bhattacharya, Vatsal Panwar +3
The formation and properties of star clusters formed at the edges of H II regions are poorly known. We study stellar content, physical conditions, and star formation processes arou…
A Smoking Gun in the Carina Nebula
Kenji Hamaguchi, Michael F. Corcoran, Yuichiro Ezoe +8
The Carina Nebula is one of the youngest, most active sites of massive star formation in our Galaxy. In this nebula, we have discovered a bright X-ray source that has persisted for…