Chemical and Photometric Evolution Models for Disk, Irregular, and Low Mass Galaxies
The ratio as a function of the mass in the disk . Our models results are the solid red dots. The cyan and black lines are the results obtained by Mateo  and Shankar et al.  from observations of the local group of galaxies and from halo data, respectively. Magenta, blue, and green dashed lines are results from Leauthaud et al.  for different ranges of redshift as labeled. The MWG point is represented by a blue full triangle and the dotted black line marks the limit between disk and spheroidal galaxies from González Delgado et al. .
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