Multiaperture JHK photometry of the globular clusters in the Fornax dwarf spheroidal galaxy

Details Multiaperture JHK photometry of the globular clusters in the Fornax dwarf spheroidal galaxy Multiaperture JHK photometry of the globular clusters in the Fornax dwarf spheroidal galaxy

Aug 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982mnras.200..509j&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 200, Aug. 1982, p. 509-520.

Astronomy and Astrophysics

Astronomy

33

Astronomical Photometry, Dwarf Galaxies, Globular Clusters, Infrared Astronomy, Milky Way Galaxy, Spheroids

Scientific paper

The JHK colours for the Fornax globular clusters 3, 4 and 5 through 12, 18 and 30 arcsec apertures and cluster 2 through an 18 arcsec aperture are presented. The infrared colours through these apertures are consistent with published optical photometry and metal abundance determinations. Cluster 4, and to a lesser extent clusters 3 and 5, become redder in J-H with increasing aperture size. This is best explained by an excess of one or more late K giants to the outer portions of the clusters. A systematic difference in the H-K colour between our photometry and the photometry of others for extended objects through large apertures is discussed.

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