# Identification of Stellar Sequences in various Stellar Systems : ESO65-SC03, TEUTSCH 106, TURNER 6

## TL;DR

This study analyzes stellar sequences in various clusters using photometric and proper motion data, identifying member stars, estimating cluster parameters, and examining stellar properties with new multi-catalogue methods.

## Contribution

It introduces a combined approach using CMRD, TCR, and TCMR diagrams with multi-catalogue data to analyze stellar sequences and cluster parameters.

## Key findings

- Identified probable cluster members through statistical cleaning.
- Estimated age, distance, and reddening via isochrone fitting.
- Observed abnormal TCR and TCMR values for TEUTSCH 106.

## Abstract

The spatial morphological study of studied clusters is carried out through the identified probable members within them. The field stars decontamination is performed by the statistical cleaning approach (depends on the magnitude and colour of stars within the field and cluster regions). The CMRD (colour magnitude ratio diagram) approach is used to separate stellar sequences of the cluster systems. The age, distance and reddening of each cluster are estimated through the visual inspection of best fitted isochrone in colour magnitude diagrams(CMDs). The mean proper motion values of clusters are obtained through the extracted data from PPMXL and UCAC4 catalogs. Moreover, these values are varying according to the extracted data-set from these catalogues. This variation is occurred due to their different estimation efficiency of proper motions. The TCR (two colour ratio) and TCMR (two colour magnitude ratio) values of each cluster are determined by utilizing the WISE and PPMXL catalogues, these values are found abnormal for TEUTSCH 106. In addition, the TCMR values are similar to TCR values at longer wavelength, whereas both values are far away to each other at shorter wavelength. The fraction of young stellar objects (YSOs) is also computed for each cluster.