IC 361:- Near infrared and UBVRI photometric Analysis

Abstract

The detailed optical and infra-red photometric analysis of the open star cluster IC 361 have shown in the present manuscript. On studying the radial density profile, radial extent of the cluster is found to be 8.0 ± 0.5 arcmin. The basic physical parameters of the cluster such as E(B − V ) = 0.56 ± 0.10 mag, E(V − K) = 1.72±0.12 mag, log(Age)=9.10±0.05, and (m−M) 0 = 12.54±0.05 mag are obtained using the colour-colour and colourmagnitude diagrams. IC 361 is found to be located at a distance of 3.22±0.07 kpc. Using the archival proper motion catalogues, we are estimated the mean proper motions of IC 361 as 4.97±0.17 mas yr −1 and -5.80±0.18 mas yr −1 in the direction of RA and DEC, respectively. We have not found steeper slop of stellar mass functions of cluster's main sequence. However, the mass function slope of coronal region is found to be −1.06 ± 0.09 which is too low compare than Salpeter value. Our study is further showing dynamically relax behaviour of the cluster IC 361.