CCD photometry of the galactic star clusters Be 15, Be 71 and King 1.

Details CCD photometry of the galactic star clusters Be 15, Be 71 and King 1. CCD photometry of the galactic star clusters Be 15, Be 71 and King 1.

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004basi...32..371l&link_type=abstract

Bulletin of the Astronomical Society of India, vol. 32, p. 371-383 (2004)

Astronomy and Astrophysics

Astronomy

5

Open Clusters: Be 15, Be 71 And King 1, Colour-Magnitude Diagram, Be 71 And King 1-Colour-Magnitude Diagram

Scientific paper

We present UBV RI CCD photometry of three open star clusters Be 15, Be 71 and King 1 for the fist time. Base on these data, optical colour magnitude diagrams (CMDs) for the stars in the clusters down to V = 22 mag are studied. There are 1408, 1887 and 2485 stars located in the regions of Be 15, Be 71 and King 1 respectively. We also provide estimates of their fundamental parameters such as radius, reddening, distance and age. The radius values for the clusters Be 15, Be 71 and King 1 are 4.5, 3.0 and 4.0 arcmin respectively. The corresponding distances are 3.0+/-0.3, 3.9+/-0.4 and 1.9+/- 0.2 kpc respectively while the ages are log (age)=8.5+/-0.1, 8.8 +/-0.1 and 9.2+/-0.1 respectively. The red giant clump is clearly visible in the CMDs of cluster King 1.

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