Deep CCD photometry of the globular cluster NGC 7099
Journal Article
·
· Astrophys. J.; (United States)
The CTIO 4 m CCD prime-focus camera was used to obtain B and V photometry to V of about 24 mag of stars in the globular cluster NGC 7099. The color-magnitude diagram exhibits very well defined narrow cluster sequences with no blue straggler candidates and no indication of a binary star sequence lying above and to the right of the main sequence. A subdwarf-based distance modulus to the cluster of 14.65 is derived. It is found that the best fit to model isochrones is for models with enhanced oxygen abundance and an age near 17 Gyr. 38 references.
- Research Organization:
- Washington Univ., Seattle
- OSTI ID:
- 5839297
- Journal Information:
- Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 319; ISSN ASJOA
- Country of Publication:
- United States
- Language:
- English
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