| Name: | Ananta Charan Pradhan |
| Affiliation: | National Institute of Technology Rourkela |
| Conference ID : | ASI2024_910 |
| Title : | Study of integrated UV light from the Galactic globular clusters (GCs) using UVIT/Astrosat observation |
| Authors : | Ananta C. Pradhan1, Ranjan Kumar1,2, Sonika Piridi1, Surath Chandra Ghosh1,3, Divya Pandey3 |
| Authors Affiliation: | 1. Department of Physics and Astronomy, National Institute of Technology Rourkela - 769008, Odisha, India.
2. Astronomy and Astrophysics Division, Physical Research Laboratory, Navrangpura, Ahmedabad - 380009, Gujarat, India.
3. Aryabhatta Research Institute of Observational Sciences (ARIES), Manora peak - 263002 Nainital, India. |
| Mode of Presentation: | Poster |
| Abstract Category : | Stars, Interstellar Medium, and Astrochemistry in Milky Way |
| Abstract : | Globular clusters (GCs) consist of old stellar populations and the major contribution of ultraviolet (UV) radiation in GCs comes from the
old evolved stars such as BHBs and EHBs. The UV flux distribution in GCs is useful in tracing back their formation history. The integrated UV flux of GCs plays a crucial role in understanding the UV upturn phenomena in the quiescent galaxies. We have studied UV flux distribution of 20 Galactic GCs using AstroSat/UVIT observations. We have compared and analysed the integrated UV fluxes within the core, half-light, and tidal radii of the selected GCs. We have discussed the fractional contribution to the UV fluxes from various hot-evolved stellar populations present in each of the above regions. Finally, we study the global parameters of the selected GCs using their integrated UV and UV-optical colors. |
