Color-magnitude photometry for the globular cluster NGC 288

Details Color-magnitude photometry for the globular cluster NGC 288 Color-magnitude photometry for the globular cluster NGC 288

Jun 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...281..158o&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 281, June 1, 1984, p. 158-171. Research supported by the University of Wash

Other

31

Globular Clusters, Stellar Color, Stellar Magnitude, Stellar Spectrophotometry, Abundance, Astronomical Catalogs, Electrophotometry, Interstellar Extinction, Main Sequence Stars, Red Giant Stars, Stellar Evolution, Stellar Luminosity, Ubv Spectra

Scientific paper

New photographic BV color-magnitude photometry for the globular cluster NGC 288 is described, covering the magnitude range V = 13-21 (from the red-giant tip to about 2 mag below the main-sequence turnoff). The turnoff (bluest point on the observed main sequence) is found to lie at V = 19.1, (B-V) = 0.44, about 0.3 mag fainter than previously estimated by Alcaino and Liller but in close agreement with two other more recent studies. Within the internal scatter of measurement, the present C-M diagram can be successfully matched by VandenBerg isochrones with relatively 'normal' abundance and age parameters (Z = 0.001, Y = 0.2, age = 15 x 10 to the 9th yr).

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