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Title:
Spectral evolution of galaxies. I - Early-type systems
Authors:
Bruzual A., G.
Affiliation:
AA(Centro de Investigaciones de Astronomia, Merida, Venezuela)
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 273, Oct. 1, 1983, p. 105-127. Research supported by the University of California, Consejo Nacional de Investigaciones Cientificas y Tecnologicas, and Centro de Investigaciones de Astronomia. (ApJ Homepage)
Publication Date:
10/1983
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Astronomical Photometry, Galactic Evolution, Iue, Stellar Evolution, Ultraviolet Spectra, Astronomical Models, Late Stars, Light Curve, Luminosity, Spectral Energy Distribution, Star Formation Rate
DOI:
10.1086/161352
Bibliographic Code:
1983ApJ...273..105B

Abstract

This work develops models for the spectral evolution of early-type galaxies using population synthesis techniques. Different choices of the initial mass function and the star formation rate allow the construction of models which at the present epoch cover the range of observed galaxy spectra. Special emphasis is given to the ultraviolet region of the spectrum. Ultraviolet spectra of late-type stars and early-type galaxies obtained with the International Ultraviolet Explorer satellite are used in this work. The evolving spectral energy distributions are used to compute galaxy colors, magnitudes, K-corrections, and evolutionary corrections as functions of redshift for different photometric systems.

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