Color-magnitude photometry to the main sequence for the 'anomalous' globular cluster Palomar 12

Details Color-magnitude photometry to the main sequence for the 'anomalous' globular cluster Palomar 12 Color-magnitude photometry to the main sequence for the 'anomalous' globular cluster Palomar 12

Aug 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...239..815h&link_type=abstract

Astrophysical Journal, Part 1, vol. 239, Aug. 1, 1980, p. 815-817, 819, 821 (15 ff.). Research supported by the Yale University

Astronomy and Astrophysics

Astrophysics

44

Globular Clusters, Main Sequence Stars, Stellar Spectrophotometry, Age Factor, Curve Fitting, Data Reduction, Error Analysis, Galactic Nuclei, Tables (Data)

Scientific paper

New photoelectric and photographic color-magnitude photometry to V = 22 is presented for the globular cluster Palomar 12. The C-M diagram morphology most closely resembles 47 Tucanae, and all combined evidence suggests that Pal 12 is a moderately metal-rich cluster in agreement with the recent red-giant abundance studies by Cohen. A preliminary age estimate of 11 billion years for Pal 12 by fitting our main-sequence data to the Yale isochrones in the (Mv, B - V)-plane is described.

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