CCD photometry of Cluster 1 of Fornax

Details CCD photometry of Cluster 1 of Fornax CCD photometry of Cluster 1 of Fornax

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990pasp..102..632d&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 102, June 1990, p. 632-638. Research supported by NSERC

Astronomy and Astrophysics

Astronomy

24

Astronomical Photometry, Charge Coupled Devices, Color-Magnitude Diagram, Dwarf Galaxies, Globular Clusters, Blue Stars, Brightness Distribution, Galactic Evolution, Metallicity

Scientific paper

A color, magnitude of Cluster 1 in Fornax is presented. From the morphology of the CMD, it is concluded that the cluster is metal-poor. Its distance, estimated from the apparent magnitude of its horizontal branch, is 20.76 or 132 kpc for E(B - V) = 0.05, comparable to previously estimated distances of Fornax. Cluster 1 belongs to the class of metal-poor systems having a red horizontal branch. If interpreted in terms of an age effect, Cluster 1 is an intermediate-age cluster, possibly formed when the numerous intermediate-age population of Fornax was formed.

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