Observations of the 4000 A break strength in the spectra of elliptical and S0 galaxies

Details Observations of the 4000 A break strength in the spectra of elliptical and S0 galaxies Observations of the 4000 A break strength in the spectra of elliptical and S0 galaxies

Jul 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989ap%26ss.157..237k&link_type=abstract

(Instituto de Astrofisica de Canarias and Comision Interministerial de Ciencia y Tecnologia, Summer School on Evolutionary Pheno

Astronomy and Astrophysics

Astrophysics

16

Elliptical Galaxies, Visible Spectrum, Color-Magnitude Diagram, Galactic Evolution, Red Shift

Scientific paper

Spectrophotometric observations of the 4000 A break strength in a large sample of nearby E and S0 galaxies are described. A tight relationship between luminosity and break strength is found, though it is too shallow at the bright end to serve as a useful distance indicator. Correlations are found between the break strength and various metal lines, Balmer lines, and the Greenwich gradient, which demonstrate the sensitivity of the break to both metallicity and composite temperature effects.

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