CCD photometry of the globular cluster NGC 288

Details CCD photometry of the globular cluster NGC 288 CCD photometry of the globular cluster NGC 288

Nov 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987aj.....94.1185p&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 94, Nov. 1987, p. 1185-1201.

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27

Astronomical Photometry, Color-Magnitude Diagram, Globular Clusters, Main Sequence Stars, Interstellar Extinction, Metallicity, Tables (Data)

Scientific paper

Observations obtained in 1983 with a CCD at the University of Hawaii 2.2-m Mauna Kea telescope are used to produce a BV color-magnitude diagram for main-sequence stars in NGC 288. Results indicate an Fe/H abundance ratio of -1.30 + or - 0.10 dex. If NGC 288 has a reddening of E(B-V) = 0.03, a true distance modulus of 14.46 + or - 0.2 is obtained. It is found from a comparison of the present color-magnitude diagram to theoretical isochrones that the data are not in agreement with the models for the assumed parameters. Abundance variations other than the Fe/H abundance ratio may explain the discrepancy between the main-sequence turnoff of NCD 288 and that of NGC 362.

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