UVIT observations of UV-Bright stars in four Galactic Globular Clusters. Issue Volume 14:Issue S351(2019) (May 2019)

• Record Type: Journal Article
• Authors: Kumar, Ranjan; Pradhan, Ananta C.; Parthasarathy, M.; Ojha, Devendra K.; Mohapatra, Abhisek; Murthy, Jayant
• Editors: Bragaglia, Angela; Davies, Melvyn; Sills, Alison; Vesperini, Enrico
• Is Part Of: Proceedings of the International Astronomical Union. Volume 14:Issue S351(2019)
• Page Start: 464
• Page End: 467
• Publication Date: 2019-05
• Subjects: globular clusters: individual (NGC 4147, -- NGC 4590, -- NGC 5053 and NGC 7492), -- stars: horizontal-branch, -- techniques: photometric; Astronomy -- Congresses; Astronomy -- Periodicals; 520
• DOI: 10.1017/S1743921319007373
• Languages: English
• ISSNs: 1743-9213

Abstract

Abstract: We have performed photometric analysis of four Galactic globular clusters (GGCs): NGC 4147, NGC 4590, NGC 5053 and NGC 7492 using far-UV and near-UV filters of the Ultraviolet Imaging Telescope (UVIT) on-board AstroSat. With the help of color-magnitude diagrams (CMDs), we have identified ~150 blue horizontal branch stars (BHBs), and ~40 blue straggler stars (BSS) in the four GGCs. We study the temperature and radial distribution of BHBs and BSS for the four GGCs.