Abstract Details

Name: Jayanand Maurya
Affiliation: ARIES, Nainital
Conference ID: ASI2020_278
Title : Photometric and Kinematic study of the Galactic open cluster NGC 2360 using ground based and Gaia DR2 data
Authors and Co-Authors : Jayanand Maurya
Abstract Type : Poster
Abstract Category : Stars, ISM and Galaxy
Abstract : We present UBVRcIc photometric study of the Galactic open cluster NGC 2360. The photometric study of the cluster NGC 2360 is very important in the sense that it exhibit extended main sequence turnoff (eMSTO). The presence of eMSTO in NGC 2360 is interesting because eMSTO has been thought to be a peculiarity of Globular and Magellanic Cloud clusters. The presence of eMSTO is dependent on factors like the presence multiple population and different stellar rotation rates in the cluster. We found evidence of multiple population in the open cluster. In this study, we examined the cluster membership of stars using recently released Gaia DR2 proper motions and obtained a total of 311 member stars in the cluster. The mean reddening of E(B − V ) = 0.14±0.03 mag is found in the direction of the cluster. We fitted the solar metallicity isochrones to determine age and distance of the cluster which are found to be 8.90±0.05 yr and 1086±146 pc, respectively. A two-stage power law in the mass function slope is observed in the cluster. To study a possible spatial variation in the slope of MF we estimate slopes separately in the core and the outer regions of the moderately richer cluster NGC 2360 and notice a stepper slope in the outer region. Thus, we found spatial variation of the mass function slope within the cluster. The dynamic study of the cluster reveals deficiency of low-mass stars in the core suggesting the mass segregation process in the cluster. The relaxation time of 46.1 Myr is obtained for the cluster NGC 2360 which is well below to their respective ages. This suggests that the cluster is dynamically relaxed. The detailed analysis of the study shall be presented in the talk.