Open AccessIntermediate‐age open clusters: Collinder 110
Author(s) -
Bragaglia Angela,
Tosi Monica
Publication year - 2003
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.2003.06668.x
Subject(s) - physics , distance modulus , metallicity , open cluster , astrophysics , photometry (optics) , hertzsprung–russell diagram , astronomy , stars , stellar evolution
We present CCD BV photometry of the intermediate‐age open cluster Collinder 110, a nearby, scarcely populated and poorly studied system. There is no literature information about the metallicity, so we tested several possibilities and found slight evidence of subsolar abundances. Using the synthetic colour–magnitude diagrams (CMDs) technique, we estimate the following parameters: age between 1.1 and 1.5 Gyr, reddening 0.38 ≤ E ( B − V ) ≤ 0.45 and distance modulus ( m − M ) 0 between 11.8 and 11.9, if the cluster metallicity is solar; or age between 1.2 and 1.7 Gyr, reddening 0.52 ≤ E ( B − V ) ≤ 0.57 and distance modulus ( m − M ) 0 between 11.45 and 11.7, if the cluster metallicity is subsolar.