VI CCD photometry in NGC 6631 Virtual Observatory Resource

Authors

1. Sagar R.
2. Naidu B.N.
3. Mohan V.

Published by

CDS

Abstract

We present VI CCD photometric observations of about 5500 stars up to a limiting magnitude of V~20 in an area of ~16'x16' around the cluster NGC 6631. The cluster parameters determined for the first time by fitting the theoretical isochrones in the V, (V-I) diagram of the cluster stars are E(V-I)=0.60+/-0.05mag, distance=2.6+/-0.5kpc, age=400+/-100Myr and metallicity, Z=0.05. The cluster diameter determined from the radial density profile is 4.8+-0.5pc. The mass function of the cluster has a slope of 2.1+/-05.

Keywords

1. stellar-associations
2. ccd-photometry

Bibliographic source Bibcode

2001BASI...29..519S

See also HTML

https://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/BASI/29.519

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ivo://CDS.VizieR/J/other/BASI/29.519

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http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/other/BASI/29.519
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/other/BASI/29.519
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/other/BASI/29.519

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http://vizier.cds.unistra.fr/viz-bin/conesearch/J/other/BASI/29.519/table?
https://vizier.iucaa.in/viz-bin/conesearch/J/other/BASI/29.519/table?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/other/BASI/29.519/table?