Photometric study of IC 2156

TL;DR

This study uses optical UBVRI photometry from SDSS to analyze the poorly studied open cluster IC 2156, estimating its astrophysical parameters and comparing results with previous infrared-based analysis.

Contribution

It provides a comprehensive optical photometric analysis of IC 2156, including structural and astrophysical parameters, complementing earlier infrared studies.

Findings

Determined the cluster's radius, core, and tidal radii.

Estimated the cluster's age, distance, and mass functions.

Compared optical and infrared photometric results for IC 2156.

Abstract

The optical UBVRI photometric analysis has been established using SLOAN DIGITAL SKY SURVEY (SDSS database) in order to estimate the astrophysical parameters of poorly studied open star cluster IC 2156. The results of the present study are compared with a previous one of ours, which relied on the 2MASS JHK infrared photometry. The stellar density distributions and color-magnitude diagrams of the cluster are used to determine the geometrical structure; limited radius, core and tidal radii, the distances from the Sun, from the Galactic plane and from the Galactic center. Also, the main photometric parameters; age, distance modulus, color excesses, membership, total mass, luminosity, mass functions and relaxation time; have been estimated.