Top: the 8 μm LFs of MIPS galaxies identified at 1.7 < z < 2.3 with the color selection techniques described in Sects. 3 and 4 (red: BzK; green: BM/BX; yellow: IRAC peakers; blue: OFIR galaxies) compared to the total 8 μm LF measured in the COSMOS field (black solid line). Previous measurements of the total 8 μm LF at z ~ 2 by Rodighiero et al. (2010, filled diamonds) and Caputi et al. (2007, filled squares) are also shown for comparison. Error bars were estimated from the Poisson noise. Bottom: fraction of galaxies identified with each of the color selections as a function of L8 μm and in the 1.5 < z < 2.8 redshift range. Color coding is similar to that used in the top panel.
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