Color distributions in early type galaxies. III - Radial gradients in spectral features

Details Color distributions in early type galaxies. III - Radial gradients in spectral features Color distributions in early type galaxies. III - Radial gradients in spectral features

Jan 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aj....101..111b&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 101, Jan. 1991, p. 111-126.

Astronomy and Astrophysics

Astronomy

32

Astronomical Spectroscopy, Color, Elliptical Galaxies, Galactic Evolution, Virgo Galactic Cluster, Abundance, Charge Coupled Devices, Emission Spectra, Galactic Nuclei, Metallicity, Spectral Line Width

Scientific paper

Long-slit spectra covering the wavelength range 5000-9500 A have been obtained for three Virgo cluster ellipticals. Measurements of features in the spectra are presented, and their implications are discussed with particular reference to (1) anomalous r-i gradients; (2) ionized gas in the nucleus of NGC 4472; (3) nuclear emission line spectrum of M87; and (4) radial absorption line gradients in NGC 4472 with emphasis on the Na I 8190 A feature.

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