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A Spatially Resolved Survey of Distant Quasar Host Galaxies. II. Photoionization and Kinematics of the ISM

Vayner, Andrey and Wright, Shelley A. and Murray, Norman and Armus, Lee and Boehle, Anna and Cosens, Maren and Larkin, James E. and Mieda, Etsuko and Walth, Gregory (2021) A Spatially Resolved Survey of Distant Quasar Host Galaxies. II. Photoionization and Kinematics of the ISM. Astrophysical Journal, 910 (1). Art. No. 44. ISSN 0004-637X.

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We present detailed observations of photoionization conditions and galaxy kinematics in 11 z = 1.39–2.59 radio-loud quasar host galaxies. Data were taken with the OSIRIS integral field spectrograph and the adaptive optics system at the W. M. Keck Observatory that targeted nebular emission lines (Hβ, [O iii], Hα, [N ii]) redshifted into the near-infrared (1–2.4 μm). We detect extended ionized emission on scales ranging from 1 to 30 kpc photoionized by stars, shocks, and active galactic nuclei (AGN). Spatially resolved emission-line ratios indicate that our systems reside off the star formation and AGN-mixing sequence on the Baldwin, Phillips, & Terlevich diagram at low redshift. The dominant cause of the difference between line ratios of low-redshift galaxies and our sample is due to lower gas-phase metallicities, which are 2–5× less compared to galaxies with AGN in the nearby universe. Using gas velocity dispersion as a proxy to stellar velocity dispersion and dynamical mass measurement through inclined disk modeling, we find that the quasar host galaxies are undermassive relative to their central supermassive black hole mass, with all systems residing off the local scaling (M•–σ, M•–M*) relationship. These quasar host galaxies require substantial growth, up to an order of magnitude in stellar mass, to grow into present-day massive elliptical galaxies. Combining these results with part I of our sample paper, we find evidence for winds capable of causing feedback before the AGN host galaxies land on the local scaling relation between black hole and galaxy stellar mass, and before the enrichment of the interstellar medium to a level observed in local galaxies with AGN.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Vayner, Andrey0000-0002-0710-3729
Wright, Shelley A.0000-0003-1034-8054
Armus, Lee0000-0003-3498-2973
Boehle, Anna0000-0003-0439-7634
Cosens, Maren0000-0002-2248-6107
Larkin, James E.0000-0001-7687-3965
Mieda, Etsuko0000-0001-7127-5990
Walth, Gregory0000-0002-6313-6808
Additional Information:© 2021. The American Astronomical Society. Received 2020 July 9; revised 2021 January 6; accepted 2021 January 15; published 2021 March 24. The authors wish to thanks Jim Lyke, Randy Campbell, and other SAs with their assistance at the telescope to acquire the Keck OSIRIS data sets. We want to thank the anonymous referee for their constructive comments that helped improve the manuscript. The data presented herein were obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W. M. Keck Foundation. The authors wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Maunakea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain. This research has made use of the NASA/IPAC Extragalactic Database (NED), which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. Software: OSIRIS DRP (Larkin et al. 2013), Matplotlib (Hunter 2007), SciPy (Virtanen et al. 2020), NumPy (Harris et al. 2020), Astropy (Astropy Collaboration et al. 2018), MAPPINGS (Alarie & Morisset 2019), emcee (Foreman-Mackey et al. 2013).
Funding AgencyGrant Number
W. M. Keck FoundationUNSPECIFIED
Subject Keywords:Radio loud quasars; Galaxy winds; Emission line galaxies; M-sigma relation; Supermassive black holes; Observational astronomy; Astronomical techniques; Near infrared astronomy
Issue or Number:1
Classification Code:Unified Astronomy Thesaurus concepts: Radio loud quasars (1349); Galaxy winds (626); Emission line galaxies (459); M-sigma relation (2026); Supermassive black holes (1663); Observational astronomy (1145); Astronomical techniques (1684)
Record Number:CaltechAUTHORS:20210401-103502088
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Official Citation:Andrey Vayner et al 2021 ApJ 910 44
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:108607
Deposited By: Tony Diaz
Deposited On:01 Apr 2021 18:28
Last Modified:01 Apr 2021 18:28

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