Issue |
Astron. Astrophys. Suppl. Ser.
Volume 121, Number 3, March 1997
|
|
---|---|---|
Page(s) | 451 - 454 | |
DOI | https://doi.org/10.1051/aas:1997125 | |
Published online | 15 March 1997 |
VI photometry of the galactic cluster Berkeley 66'*,**
1
Department of Mathematical Physics, Torino University, Torino, Italy
2
Torino Astronomical Observatory, Strada Osservatorio 20, I-10025 Pino Torinese, Torino, Italy
3
Department of Astronomy, Padova University, vicolo dell'Osservatorio 5, I-35122 Padova, Italy
Send offprint request to: G. Carraro
Received:
16
April
1996
Accepted:
11
June
1996
A colour magnitude diagram (CMD) extending to mag is given for 444
stars in the region of the galactic cluster Berkeley 66. The
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
and the colour excess
EV-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.
Key words: open clusters: Berkeley 66 / HR diagram
© European Southern Observatory (ESO), 1997