29 citations · 70 across the 6 of their papers we have counts for
5 papers
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…
On the /Fe bimodality of the M31 disks
Chiaki Kobayashi, Souradeep Bhattacharya, Magda Arnaboldi +1
An outstanding question is whether the /Fe bimodality exists in disk galaxies other than in the Milky Way. Here we present a bimodality using our state-of-the-art galactic chemi…
The survey of planetary nebulae in Andromeda (M31) VI. Kinematics of M31 inner-halo substructures and comparison with major-merger simulation predictions
Souradeep Bhattacharya, Magda Arnaboldi, Francois Hammer +4
M31 has experienced a recent tumultuous merger history as evidenced from the many substructures that are still present in its inner halo, particularly the G1-Clump, NE- and W- shel…
The survey of planetary nebulae in Andromeda (M 31) V. Chemical enrichment of the thin and thicker discs of Andromeda. Oxygen to argon abundance ratios for planetary nebulae and H II regions
Magda Arnaboldi, Souradeep Bhattacharya, Ortwin Gerhard +6
We use oxygen and argon abundances for planetary nebulae (PNe) with low internal extinction (progenitor ages of (>4.5 Gyr) and high extinction (progenitor ages <2.5 Gyr), as well a…
Morphology of Open Clusters NGC 1857 and Czernik 20 using Clustering Algorithms
Souradeep Bhattacharya, Vedant Mahulkar, Samay Pandaokar +1
The morphology and cluster membership of the Galactic open clusters - Czernik 20 and NGC 1857 were analyzed using two different clustering algorithms. We present the maiden use of…