CCD BV photometry of the intermediate age open cluster GC 1245

Details CCD BV photometry of the intermediate age open cluster GC 1245 CCD BV photometry of the intermediate age open cluster GC 1245

Sep 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...289..397c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 289, no. 2, p. 397-403

Astronomy and Astrophysics

Astrophysics

14

Astronomical Photometry, Color-Magnitude Diagram, Galactic Structure, Open Clusters, Chronology, Color, Distance, Populations, Stellar Luminosity

Scientific paper

A new CCD color magnitude diagram (CMD) for the intermediate age open cluster NGC 1245 is presented. The cluster appears to be rich, but loose, irregular and very broad. Adopting the metallicity value of (Fe/H) = +0.14 from Lynga (1987) we obtain a color excess EB-V = 0.26, an apparent distance modulus (m - M) = 13.20, and an age of 8.0 x 108 yr. This puts NGC 1245 at a distance of about 3.0 Kpc from the Sun. The analysis of the CMD shows the presence of various field populations, and some evidences of differential absorption.

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