Chemical and Photometric Evolution Models for Disk, Irregular, and Low Mass Galaxies
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 e...
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| Format: | Article |
| Language: | English |
| Published: |
Hindawi Limited
2014-01-01
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| Series: | Advances in Astronomy |
| Online Access: | http://dx.doi.org/10.1155/2014/162949 |
| Summary: | 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. |
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| ISSN: | 1687-7969 1687-7977 |