Deep Extragalactic VIsible Legacy Survey (DEVILS): The emergence of
  bulges and decline of disk growth since $z = 1$
  We present a complete structural analysis of the ellipticals (E), diffuse
bulges (dB), compact bulges (cB), and disks (D) within a redshift range $0 < z
< 1$, and stellar mass $\log_{10}(\mathrm{M}_*/\mathrm{M}_\odot) \geq 9.5$
volume-limited sample drawn from the combined DEVILS and HST-COSMOS region. We
use the {\sc ProFit} code to profile over $\sim35,000$ galaxies for which
visual classification into single or double-component was predefined in
Paper-I. Over this redshift range, we see a growth in the total stellar mass
density (SMD) of a factor of 1.5. At all epochs we find that the dominant
structure, contributing to the total SMD, is the disk, and holds a fairly
constant share of $\sim60\%$ of the total SMD from $z = 0.8$ to $z = 0.2$,
dropping to $\sim30\%$ at $z = 0.0$ (representing $\sim33\%$ decline in the
total disk SMD). Other classes (E, dB, and cB) show steady growth in their
numbers and integrated stellar mass densities. By number, the most dramatic
change across the full mass range is in the growth of diffuse bulges. In terms
of total SMD, the biggest gain is an increase in massive elliptical systems,
rising from 20\% at $z = 0.8$ to equal that of disks at $z = 0.0$ (30\%)
representing an absolute mass growth of a factor of 2.5. Overall we see a clear
picture of the emergence and growth of all three classes of spheroids over the
past 8 Gyrs, and infer that in the later half of the Universe's timeline
spheroid forming-processes and pathways (secular evolution, mass-accretion, and
mergers) appear to dominate mass transformation over quiescent disk growth.
