The Sloan Digital Sky Survey Reverberation Mapping Project: Quasar Host
  Galaxies at $z < 0.8$ from Image Decomposition
  We present the rest-frame UV and optical photometry and morphology of
low-redshift broad-line quasar host galaxies from the Sloan Digital Sky Survey
Reverberation Mapping project. Our sample consists of 103 quasars at $z<0.8$,
spanning a luminosity range of $-25\le M_g\le -17$ mag. We stack the
multi-epoch images in the $g$ and $i$ bands taken by the Canada-France-Hawaii
Telescope. The combined $g$-band ($i$-band) images reach a $5\sigma$ depth of
26.2 (25.2) mag, with a typical PSF size of $0.7"$ ($0.6"$). Each quasar is
decomposed into a PSF and a S\'ersic profile, representing the central AGN and
the host galaxy components, respectively. The systematic errors of the measured
host galaxy flux in the two bands are 0.23 and 0.18 mag. The relative errors of
the measured galaxy half-light radii ($R_e$) are about 13%. We estimate the
rest-frame $u$- and $g$-band flux of the host galaxies, and find that the
AGN-to-galaxy flux ratios in the $g$ band are between 0.9 to 4.4 (68.3%
confidence). These galaxies have high stellar masses $M_\ast =
10^{10}\sim10^{11}\, M_\odot$. They have similar color with star-forming
galaxies at similar redshifts, in consistent with AGN positive feedback in
these quasars. We find that the $M_*-M_\text{BH}$ relation in our sample is
shallower than the local $M_\text{Bulge}-M_\text{BH}$ relation. The S\'ersic
indices and the $M_*-R_e$ relation indicate that the majority of the host
galaxies are disk-like.
