A CCD BVI COLOR-MAGNITUDE STUDY OF THE METAL-RICH GLOBULAR-CLUSTER NGC-5927

Authors
SAMUS N KRAVTSOV V IPATOV A SMIRNOV O ALCAINO G LILLER W ALVARADO F
Citation
N. Samus et al., A CCD BVI COLOR-MAGNITUDE STUDY OF THE METAL-RICH GLOBULAR-CLUSTER NGC-5927, Astronomy & Astrophysics. Supplement series, 119(2), 1996, pp. 191-197
Citations number
17
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Astronomy & Astrophysics. Supplement series → ACNP
ISSN journal
03650138
Volume
119
Issue
2
Year of publication
1996
Pages
191 - 197
Database
ISI
SICI code
0365-0138(1996)119:2<191:ACBCSO>2.0.ZU;2-P
Abstract
We present for the globular cluster NGC 5927 the first multicolor CCD photometry that reaches below the cluster's main sequence turnoff. The turnoff is located approximately at V-TO = 20.(m)1, (B - V)(TO) = 1.( m)18, (V - I)(TO) = l.(m)30. There is a hint of horizontal branch morp hology variations with distance from the cluster center. Using the iso chrones of VandenBerg & Bell (1985), we derive the cluster age to be a bout 15 Gyr.