Study of dynamical status of the globular cluster NGC 1851 using ultraviolet imaging telescope
Abstract
We present the study of dynamical status of the globular cluster NGC 1851. A combination of multi-wavelength space and ground-based data sets are used for the present analysis. In order to select the genuine cluster members, we used the astro-photometric data available from HST and GAIA-DR2 catalogs. The BSS radial distribution of the cluster is plotted from the center of the cluster to the outskirts. The radial distribution of BSS shows a central peak, followed by a dip at the intermediate radii (rmin∼90'' ) and a rising trend in the outskirts. We also estimated Arh+ parameter as 0.391 ± 0.006 to validate the findings of the radial distribution study. On the basis of the minima in the BSS radial distribution and the value of Arh+ parameter, we conclude that NGC 1851 belongs to Family II classification and is an intermediate dynamical state cluster.
- Publication:
-
Journal of Astrophysics and Astronomy
- Pub Date:
- October 2021
- DOI:
- 10.1007/s12036-021-09725-3
- arXiv:
- arXiv:2102.02814
- Bibcode:
- 2021JApA...42...53S
- Keywords:
-
- Galaxy: globular;
- clusters: individual: NGC 1851;
- stars: blue stragglers;
- stars: Hertzsprung-Russell and colour-magnitude diagrams;
- Astrophysics - Astrophysics of Galaxies;
- Astrophysics - Solar and Stellar Astrophysics
- E-Print:
- 9 pages, 8 figures, 2 tables, Accepted for publication in JOAA