CCD photometry of distant open clusters. IV. Trumpler 5

Details CCD photometry of distant open clusters. IV. Trumpler 5 CCD photometry of distant open clusters. IV. Trumpler 5

Nov 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998a%26as..133...25k&link_type=abstract

Astronomy and Astrophysics Supplement, v.133, p.25-28

Astronomy and Astrophysics

Astrophysics

12

Open Clusters And Associations: Individual: Trumpler 5, Hr Diagram

Scientific paper

We present BVI photometry for Trumpler 5, a rich open cluster located in the Galactic anticenter. The cluster age is slightly lower than the age of M 67. Its distance modulus (m-M)0 and reddening E(B-V) are estimated at 12.4 and 0.58, respectively. These values were obtained for the assumed solar metallicity of the cluster. Our data indicate that Tr 5 is one of the richest objects among the sample of known old open clusters. The total mass included only in upper-main sequence stars exceeds 3000 msun. The angular diameter of the cluster is estimated at 11.6 arcmin, which corresponds to a linear size of about 20 pc for an estimated distance d~ 3.0 kpc. The data presented in Fig. \ref{fig1} are available in electronic form at the CDS, via ftp 130.79.128.5. Visiting Astronomer, Kitt Peak National Observatory. KPNO is operated by AURA, Inc., under contract with the National Science Foundation.

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