TY - JOUR
T1 - The Sloan Digital Sky Survey Reverberation Mapping Project
T2 - Quasar Host Galaxies at z < 0.8 from Image Decomposition
AU - Yue, Minghao
AU - Jiang, Linhua
AU - Shen, Yue
AU - Hall, Patrick B.
AU - Yu, Zhefu
AU - Schneider, Donald P.
AU - Ho, Luis C.
AU - Horne, Keith
AU - Petitjean, Patrick
AU - Trump, Jonathan R.
N1 - Funding Information:
We thank the referee for many useful comments that have significantly improved this work. We acknowledge support from the National Key R&D Program of China (2016YFA0400703) and from the National Science Foundation of China (11533001). Y.S. acknowledges support from an Alfred P. Sloan Research Fellowship and NSF grant AST-1715579. P.B.H. is supported by NSERC. L.C.H. was supported by the National Key R&D Program of China (2016YFA0400702) and the National Science Foundation of China (11473002, 11721303). K.H. acknowledges support from STFC grant ST/M001296/1.
Funding Information:
Funding for SDSS-III has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Science Foundation, and the U.S. Department of Energy Office of Science. The SDSS-III web site is http://www.sdss3.org/. SDSS-III is managed by the Astrophysical Research Consortium for the Participating Institutions of the SDSS-III Collaboration including the University of Arizona, the Brazilian Participation Group, Brookhaven National Laboratory, Carnegie Mellon University, University of Florida, the French Participation Group, the German Participation Group, Harvard University, the Instituto de Astrofisica de Canarias, the Michigan State/Notre Dame/JINA Participation Group, Johns Hopkins University, Lawrence Berkeley National Laboratory, Max Planck Institute for Astrophysics, Max Planck Institute for Extraterrestrial Physics, New Mexico State University, New York University, Ohio State University, Pennsylvania State University, University of Portsmouth, Princeton University, the Spanish Participation Group, University of Tokyo, University of Utah, Vanderbilt University, University of Virginia, University of Washington, and Yale University.
Publisher Copyright:
© 2018. The American Astronomical Society. All rights reserved.
PY - 2018/8/10
Y1 - 2018/8/10
N2 - 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 ≤ M g ≤ -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 5σ depth of 26.2 (25.2) mag, with a typical point-spread function (PSF) size of 0.″7 (0.″6). Each quasar is decomposed into a PSF and a Sérsic profile, representing the components of the central active galactic nucleus (AGN) and the host galaxy, 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 and 4.4 (68.3% confidence). These galaxies have high stellar masses . They have similar colors to star-forming galaxies at similar redshifts, which is consistent with AGN positive feedback in these quasars. We find that the relation in our sample is shallower than the local M Bulge-M BH relation. The Sérsic indices and the M ∗-R e relation indicate that the majority of the host galaxies are disk-like.
AB - 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 ≤ M g ≤ -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 5σ depth of 26.2 (25.2) mag, with a typical point-spread function (PSF) size of 0.″7 (0.″6). Each quasar is decomposed into a PSF and a Sérsic profile, representing the components of the central active galactic nucleus (AGN) and the host galaxy, 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 and 4.4 (68.3% confidence). These galaxies have high stellar masses . They have similar colors to star-forming galaxies at similar redshifts, which is consistent with AGN positive feedback in these quasars. We find that the relation in our sample is shallower than the local M Bulge-M BH relation. The Sérsic indices and the M ∗-R e relation indicate that the majority of the host galaxies are disk-like.
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U2 - 10.3847/1538-4357/aacf04
DO - 10.3847/1538-4357/aacf04
M3 - Article
AN - SCOPUS:85051458357
SN - 0004-637X
VL - 863
JO - Astrophysical Journal
JF - Astrophysical Journal
IS - 1
M1 - 21
ER -