Theoretical isochrones for globular clusters with predicted BVRI and Stroemgren photometry

Journal Article · Thu Aug 01 04:00:00 EDT 1985 · Astrophys. J., Suppl. Ser.; (United States)

DOI:https://doi.org/10.1086/191052· OSTI ID:5267002

VandenBerg, D A; Bell, R A

New stellar evolutionary sequences and isochrones, calculated for metallicities and ages appropriate to the Galactic globular clusters, are presented on the Johnson UBV, Cousins RI, and Stroemgren uvby photometric systems. Based on improved integrations of appropriate dwarf model atmospheres, the color-temperature relations used to transpose the models from the theoretical to the observational plane are (also) fully tabulated. The isochrones have been extended down to M/sub v/roughly-equal8 in order that they may be compared over the full range in main-sequence luminosity presently being achieved in CCD studies of globular clusters. Comparisons with recent such V, B-V data for M4, M15, and 47 Tuc indicate that the observations are faithfully reproduced by the present models. The potential importance of carrying out infrared and Stroemgren photometry of the globulars is also discussed.

• Research Organization: University of Victoria
• OSTI ID: 5267002
• Journal Information: Astrophys. J., Suppl. Ser.; (United States), Journal Name: Astrophys. J., Suppl. Ser.; (United States) Vol. 58:4; ISSN APJSA
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AGE ESTIMATION
COLOR
DATA ANALYSIS
OPTICAL PROPERTIES
ORGANOLEPTIC PROPERTIES
PHOTOMETRY
PHYSICAL PROPERTIES
STAR CLUSTERS
STAR EVOLUTION
TABLES