VI photometry of the galactic cluster Berkeley 66

Details VI photometry of the galactic cluster Berkeley 66 VI photometry of the galactic cluster Berkeley 66

Mar 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997a%26as..121..451g&link_type=abstract

A & A Supplement series, Vol. 121, March 1997, 451-464.

Astronomy and Astrophysics

Astronomy

3

Open Clusters: Berkeley 66, Hr Diagram

Scientific paper

A colour magnitude diagram (CMD) extending to V ~= 19 mag is given for 444 stars in the region of the galactic cluster Berkeley 66. The V and I photometry of a nearby field is also reported. This object appears very faint, highly contaminated by foreground stars and very reddened. The apparent distance modulus (m-M) and the colour excess E_{V-I} are guessed to be 17.5 and 1.1, respectively, with an uncertainty of at least 30%. Adopting these values the comparison of the CMD with theoretical isochrones from the Padova group provides an age around 1.0 Gyr. Based on observations carried out at Pino Torinese Observatory, Torino, Italy. Table 2 is available only in electronic form at the CDS via anonymous ftp 130.79.128.5.

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