BVI CCD photometry of 47 Tucanae
Journal Article
·
· Astrophys. J.; (United States)
CCD BVI main-sequence photometry of 47 Tuc is presented, matched to the recent BVI isochrones of VandenBerg and Bell (1985). The main-sequence turnoffs are found to be at V = 17.60 + or - 0.1, B-V = 0.56 + or - 0.02; V-I = 0.68 + or - 0.02, and B-I = 1.24 + or - 0.02. The magnitude difference between the main-sequence turnoff and the horizontal branch is 3.55 + or - 0.15 for all three color indices. A consistent age for 47 Tuc of 17 Gyr and a consistent distance modulus of (m-M)v = 13.2 are obtained for all three indices, and an absolute magnitude of Mv = 0.85 is determined for the horizontal branch stars. The results also favor the adoption of (Fe/H) near -0.5 as the best abundance value for 47 Tuc. 38 references.
- Research Organization:
- Instituto Isaac Newton, Santiago, Chile
- OSTI ID:
- 5931393
- Journal Information:
- Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 319; ISSN ASJOA
- Country of Publication:
- United States
- Language:
- English
Similar Records
BVI CCD photometry of the globular cluster M4
BVI CCD photometry of the broad main-sequence globular cluster NGC 1851
A NEW COLOR-MAGNITUDE DIAGRAM FOR 47 TUCANAE: A STATISTICAL ANALYSIS
Journal Article
·
Fri Jul 01 00:00:00 EDT 1988
· Astrophys. J.; (United States)
·
OSTI ID:7089133
BVI CCD photometry of the broad main-sequence globular cluster NGC 1851
Journal Article
·
Wed Feb 28 23:00:00 EST 1990
· Astronomical Journal; (USA)
·
OSTI ID:6917732
A NEW COLOR-MAGNITUDE DIAGRAM FOR 47 TUCANAE: A STATISTICAL ANALYSIS
Journal Article
·
Sat Nov 14 23:00:00 EST 2009
· Astronomical Journal (New York, N.Y. Online)
·
OSTI ID:21301546