High-redshift massive quiescent galaxies are as flat as star-forming galaxies : the flattening of galaxies and the correlation with structural properties in CANDELS/3D-HST Ghent University
We investigate the median flattening of galaxies at 0.2 < z < 4.0 in all five CANDELS/3D-HST fields via the apparent axis ratio, q. We separate the sample into bins of the redshift, stellar mass, Sersic index, size, and UVJ-determined star-forming state to discover the most important drivers of the median q (q(med)). Quiescent galaxies at z < 1 and M-* > 10(11) M-circle dot are rounder than those at lower masses, consistent with the ...