Photometric study of five open star clusters

Abstract

$UBVRI$ photometry of the five open clusters Czernik 4, Berkeley 7, NGC 2236, NGC 7226 and King 12 has been carried out using ARIES 104 cm telescope, Nainital. Fundamental cluster parameters such as foreground reddening $E(B-V)$, distance, and age have been derived by means of the observed two colour and colour-magnitude diagrams, coupled to comparisons with theoretical models. $E(B-V)$ values range from 0.55 to 0.74 mag, while ages derived for these clusters range from $\sim$10 to $\sim$500 Myr. We have also studied the spatial structure, mass function and mass segregation effects. The present study shows that evaporation of low mass stars from the halo of the clusters increases as they evolve.

19 pages, 12 figures and 7 tables, Accepted for publication in New Astronomy

References in corpus (4)

• Wide Field CCD photometry around nine open clusters
• CCD BV survey of 42 open clusters
• Mass functions and photometric binaries in nine open clusters
• Unveiling hidden properties of young star clusters: differential reddening, star-formation spread and binary fraction

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• ASteCA - Automated Stellar Cluster Analysis
• Investigation of open clusters based on IPHAS and APASS survey data
• Investigating kinematics and dynamics of three open clusters towards Galactic anti-center
• Complex stellar system ESO65SC03: Open cluster or remnant?
• Long-term investigation of an open cluster Berkeley 65