Advances in Astronomy / 2014 / Article / Fig 1

Research Article

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

Figure 1

(a) Dependence of the collapse time scale, , in natural logarithmic scale, (in Gyr) on the galactocentric radius, , in kpc. Each line represents a given maximum rotation velocity, , or radial mass distribution as labeled. The dashed (gray) and dotted (black) lines show the time corresponding to 2 and 5 times, respectively, the age of the Universe,  Gyr. (b) Comparison of the radial dependence of the collapse time scale, , in natural logarithmic scale, for our MWG model, corresponding to , shown by the solid red line, with the radial functions used by Chang et al. [73], Boissier and Prantzos [32], Chiappini et al. [74], Renda et al. [75], Carigi and Peimbert [76], and Marcon-Uchida et al. [35] labeled CHA99, BP99, CHIA01, REN05, CAR08, and MAR10, respectively.
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162949.fig.001b
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