Astron. Astrophys. Suppl. Ser.
Volume 128, Number 1, February II 1998
|Page(s)||131 - 138|
|Published online||15 February 1998|
Observatorio Astronómico, Universidad Nacional de Córdoba, Laprida 854, 5000 Córdoba, Argentina
Send offprint request to: J.J. Clariá
Accepted: 18 June 1997
UBV photoelectric photometry for 175 stars in the field of the southern open cluster NGC 2323, supplemented by DDO photometry of 5 probable giants, is presented. The analysis of the photometric data yields 109 probable members; one of them being a red giant, and 3 possible members. The reddening across the cluster is slightly variable and the mean value . The apparent cluster distance modulus is 10.62, corresponding to a distance of 940 pc. The age, determined by fitting isochrones with core overshooting, turns out to be Myr. Other fundamental cluster parameters are also determined. NGC 2323 appears not to be physically connected to the CMa OB1 association.
Key words: open clusters: individual: NGC 2323 / open clusters: general / HR diagram
Based on observations made at Cerro Tololo Inter-American Observatory (Chile) and at Las Campanas Observatory (Chile).
Tables 1 and 2 are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (184.108.40.206) or via http://cdsweb.u-strasbg.fr/Abstract.html
© European Southern Observatory (ESO), 1998