The late-type stellar content of the Fornax and Sculptor dwarf galaxies

Details The late-type stellar content of the Fornax and Sculptor dwarf galaxies The late-type stellar content of the Fornax and Sculptor dwarf galaxies

Jan 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...252..133f&link_type=abstract

Astrophysical Journal, Part 1, vol. 252, Jan. 1, 1982, p. 133-146.

Astronomy and Astrophysics

Astronomy

78

Carbon Stars, Elliptical Galaxies, Late Stars, Magellanic Clouds, Stellar Evolution, Stellar Luminosity, Abundance, Bolometers, Globular Clusters, Infrared Astronomy, M Stars, Milky Way Galaxy, Stellar Spectrophotometry

Scientific paper

JHK photometric data have been obtained for most of the late-type stars identified in a survey of the Fornax and Sculptor dwarf elliptical galaxies over a field of 0/13 sq deg. The colors of the 25 C stars found in Fornax overlap those of the C stars in the Magellanic Clouds, but are bluer in the mean. The two relatively blue stars found in Sculptor are similar in color and luminosity to those in the globular cluster Omega Centauri, and are at the faint end of the luminosity distribution of C stars found in the Magellanic Clouds and Fornax. Identical survey techniques show the ratio of cool C stars to M stars to increase along the sequence Milky Way, LMC, SMC, and Fornax. This increase, along with systematic changes in the colors of the C and M stars, may be seen as arising from a systematic mean metallicity decrease of the galaxies on this sequence. A stellar population qualitatively similar to that of Omega Centauri is implied by the new, and previously published, data for Sculptor.

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