Photometric binary content in intermediate/old open clusters
State Observatory, Manora Peak, Naini Tal, 263 129 Uttaranchal, India
Corresponding author: A. K. Pandey, pandey@upso.ernet.in
Received:
13
September
2002
Accepted:
4
June
2003
The stellar evolutionary models by Bertelli et al. ([CITE]) have been used to generate synthetic colour–magnitude diagrams (CMDs) of open clusters. A comparison of the synthetic integrated luminosity function (ILF) and synthetic colour distribution with the corresponding observed distributions is used to estimate the photometric binary content in three intermediate age open clusters, which is found to be about 30% in these clusters.
Key words: open clusters and associations: general / stars: Hertzsprung Russell (HR) and C-M diagrams
© ESO, 2003