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Fig. 4

image

Evolution of the transition mass cross as a function of redshift. Solid red symbols indicate the stellar masses where the number densities of blue cloud (d4000 < 1.55) and red sequence (d4000 > 1.55) galaxies are equal, with circles representing the three VIPERS bins and the triangle indicating 0.02 ≤ z< 0.08 SDSS galaxies. Solid symbols are based on VIPERS/SDSS data, while open points are cross values from the literature. Blue diamonds represent the cross values from Davidzon et al. (2013) using UV colour to classify blue and red galaxies, while magenta stars represent the cross values obtained applying the NUVrK classification of Davidzon et al. (2016) to the same VIPERS-PDR1 sample. The points from Vergani et al. (2008) are based on classification by D4000 break (green squares), and those from Bundy et al. (2006) are based on a UB classification (blue octagons). Light blue horizontal lines indicate the upper mass limit of the blue cloud (as in Fig. 3), pale yellow shaded regions indicate the stellar mass ranges where the d4000 distribution appears flat-topped, the pale green shaded regions indicate the stellar mass ranges where a green valley is apparent as a central dip in the d4000 distribution, while the light blue shaded regions are dominated by the blue cloud population.

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