Abstract
Broadband VRI and narrowband CCD frames were obtained at CFHT of the central region of NGC 205, the dwarf elliptical companion of the Andromeda Galaxy. The narrowband images isolate TiO and CN and colors formed from the photometry of these images allow carbon and M stars to be unambiguously separated. Among the stars with reliable photometry, 7 carbon stars were found together with 21 late M stars with spectral types as cool as ~M5. Up to 4 of these latter objects may lie in the foreground. If the relative number of carbon and M giants is solely correlated with metallicity, then the metal abundance of NGC 205 lies in the range of that of the Magellanic Clouds. The presence of carbon stars in NGC 205 implies that star formation has been an ongoing process in this dwarf elliptical galaxy.
Visiting astronomers at the Canada-Hawaii Telescope,National Research Council of Canada, the Centre National de Recherche Scientifique of France, the University of Hawaii
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© 1985 D. Reidel Publishing Company
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Richerf, H.B., Crabtreef, D.R., Pritehet, C.J. (1985). Carbon and M Stars in Ngc 205. In: Jaschek, M., Keenan, P.C. (eds) Cool Stars with Excesses of Heavy Elements. Astrophysics and Space Science Library, vol 114. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-5325-3_23
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DOI: https://doi.org/10.1007/978-94-009-5325-3_23
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