A deep V I CCD photometric study of the neglected galactic star cluster NGC 6631

dc.contributor.author	Sagar, R
dc.contributor.author	Naidu, B. N
dc.contributor.author	Mohan, V
dc.date.accessioned	2008-05-17T10:01:18Z
dc.date.available	2008-05-17T10:01:18Z
dc.date.issued	2001
dc.identifier.citation	BASI, Vol. 29, No. 4, pp. 519 - 530	en
dc.identifier.uri	http://hdl.handle.net/2248/2323
dc.description.abstract	We present the V I CCD photometric observations of about 5500 stars up to a limiting magnitude of V ~ 20 in an area of ~ 16? x 16? 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 +/- 0.05 mag, distance = 2.6 +/- 0.5 kpc, age = 400 +/- 100 Myr and metallicity, Z = 0.05. The cluster diameter determined from the radial density profile is 4.8 +/- 0.5 pc. The mass function of the cluster has a slope of 2.1 +/- 0.5.	en
dc.format.extent	944774 bytes
dc.format.mimetype	application/pdf
dc.language.iso	en	en
dc.publisher	Astronomical Society of India	en
dc.relation.uri	http://adsabs.harvard.edu/abs/2001BASI...29..519S	en
dc.subject	Photometry	en
dc.subject	Cluster NGC 6631	en
dc.subject	Colour-magnitude diagram	en
dc.title	A deep V I CCD photometric study of the neglected galactic star cluster NGC 6631	en
dc.type	Article	en