Other
Scientific paper
Oct 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985aj.....90.1927r&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 90, Oct. 1985, p. 1927-1956.
Other
218
Elliptical Galaxies, Galactic Nuclei, Star Clusters, Stellar Evolution, Dwarf Stars, Hot Stars, Signal To Noise Ratios, Stellar Spectra
Scientific paper
Spectra of elliptical galaxies and Galactic globular clusters are presented in integrated light in the 3400-4500 A wavelength region and at a resolution of 2.5 A. A very small hot star population is detected in M32 and other elliptical galaxies whose contribution to the integrated spectra is quantitatively consistent with that expected from the metal-poor population predicted to be present by the simple picture of galactic chemical enrichment. Systematic differences found between the nuclear spectrum of M32 and those of metal-rich globular clusters are only explained if dwarfs provide a much greater contribution to the integrated light of the M32 nucleus than to the integrated blue light of metal-rich globular clusters. This dwarf enrichment relative to metal-rich globular clusters also is found to exist in the M32 extranuclear region.
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