UOCS. V. UV study of the old open cluster NGC 188 using AstroSat
Abstract
We present the UV photometry of the old open cluster NGC188 obtained using images acquired with Ultraviolet Imaging Telescope (UVIT) on board the AstroSat satellite, in two far-UV (FUV) and one near-UV (NUV) filters. UVIT data is utilised in combination with optical photometric data to construct the optical and UV colour-magnitude diagrams (CMDs). In the FUV images, we detect only hot and bright blue straggler stars (BSSs), one hot subdwarf, and one white dwarf (WD) candidate. In the NUV images, we detect members up to a faintness limit of
- Publication:
-
Journal of Astrophysics and Astronomy
- Pub Date:
- October 2021
- DOI:
- 10.1007/s12036-020-09683-2
- arXiv:
- arXiv:2012.00510
- Bibcode:
- 2021JApA...42...47R
- Keywords:
-
- Galaxy: open clusters: individual: NGC 188;
- stars: horizontal-branch;
- stars: blue stragglers;
- stars: Hertzsprung-Russell and colour-magnitude diagrams;
- stars: Hertzsprung–Russell and colour-magnitude diagrams;
- Astrophysics - Solar and Stellar Astrophysics;
- Astrophysics - Astrophysics of Galaxies
- E-Print:
- 11 pages, 7 figures, 3 tables, Accepted for publication in Journal of Astrophysics and Astronomy