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Advances in Astronomy
Volume 2014, Article ID 162949, 26 pages
http://dx.doi.org/10.1155/2014/162949
Research Article

Chemical and Photometric Evolution Models for Disk, Irregular, and Low Mass Galaxies

1Departamento de Investigación Básica, CIEMAT, Avenida Complutense 40, 28040 Madrid, Spain
2IAG, University of São Paulo, 05508-900 São Paulo, SP, Brazil

Received 18 October 2013; Revised 30 December 2013; Accepted 1 January 2014; Published 20 May 2014

Academic Editor: Jorge Iglesias Páramo

Copyright © 2014 Mercedes Mollá. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We summarize the updated set of multiphase chemical evolution models performed with 44 theoretical radial mass initial distributions and 10 possible values of efficiencies to form molecular clouds and stars. We present the results about the infall rate histories, the formation of the disk, and the evolution of the radial distributions of diffuse and molecular gas surface density, stellar profile, star formation rate surface density, and elemental abundances of C, N, O, and Fe, finding that the radial gradients for these elements begin steeper and flatten with increasing time or decreasing redshift, although the outer disks always show a certain flattening for all times. With the resulting star formation and enrichment histories, we calculate the spectral energy distributions (SEDs) for each radial region by using the ones for single stellar populations resulting from the evolutive synthesis model POPSTAR. With these SEDs we may compute finally the broad band magnitudes and colors radial distributions in the Johnson and in the SLOAN/SDSS systems which are the main result of this work. We present the evolution of these brightness and color profiles with the redshift.