Accretion and Obscuration in Merger-Dominated Luminous Red Quasars

Abstract

We present an analysis of the X-ray properties 10 luminous, dust-reddened quasars from the FIRST-2MASS (F2M) survey based on new and archival Chandra observations. These systems are interpreted to be young, transitional objects predicted by merger-driven models of quasar/galaxy co-evolution. The sources have been well-studied from the optical through mid-infrared, have Eddington ratios above 0.1, and possess high-resolution imaging, most of which shows disturbed morphologies indicative of a recent or ongoing merger. When combined with previous X-ray studies of five other F2M red quasars, we find that the sources, especially those hosted by mergers, have moderate to high column densities ($N_H\simeq 10^{22.5-23.5}$ cm${}^{-2}$) and Eddington ratios high enough to enable radiation pressure to blow out the obscuring material. We confirm previous findings that red quasars have dust-to-gas ratios that are significantly lower than the value for the Milky Way's interstellar medium, especially when hosted by a merger. The dust-to-gas ratio for two red quasars that lack evidence for merging morphology is consistent with the Milky Way and they do not meet the radiative feedback conditions for blowout. These findings support the picture of quasar/galaxy co-evolution in which a merger results in feeding of and feedback from an AGN. We compare the F2M red quasars to other obscured and reddened quasar populations in the literature, finding that, although morphological information is lacking, nearly all such samples meet blowout conditions and exhibit outflow signatures suggestive of winds and feedback.

Accepted for publication in MNRAS

References in corpus (26)

• The Sloan Digital Sky Survey-II Supernova Survey: Technical Summary
• The close environments of accreting massive black holes are shaped by radiative feedback
• Evidence for Quasar Activity Triggered by Galaxy Mergers in HST Observations of Dust-reddened Quasars
• The effect of radiation pressure on dusty absorbing gas around AGN
• The Most Luminous Galaxies Discovered by WISE
• Submillimeter Follow-up of WISE-Selected Hyperluminous Galaxies
• The FIRST-2MASS Red Quasar Survey
• The X-Ray to Mid-Infrared Relation of AGN at High Luminosity
• Extremely Red Quasars in BOSS
• Radiative pressure feedback by a quasar in a galactic bulge
• The WISSH Quasars Project III. X-ray properties of hyper-luminous quasars
• Spitzer Observations of Young Red Quasars
• NuSTAR observations of WISE J1036+0449, a Galaxy at z$\sim 1$ obscured by hot dust
• Heavy X-ray obscuration in the most-luminous galaxies discovered by WISE
• The hidden quasar nucleus of a WISE-selected, hyperluminous, dust-obscured galaxy at z ~ 2.3
• Powerful winds in high-redshift obscured and red quasars
• [OIII] Emission Line Properties in a New Sample of Heavily Reddened Quasars at $z>2$
• The role of the most luminous, obscured AGN in galaxy assembly at z~2
• Red quasars blow out molecular gas from galaxies during the peak of cosmic star formation
• The Dust-to-Gas Ratio and the Role of Radiation Pressure in Luminous, Obscured Quasars
• A complete catalogue of merger fractions in AGN hosts: No evidence for an increase in detected merger fraction with AGN luminosity
• Probing the Inner Circumgalactic Medium and Quasar Illumination around the Reddest `Extremely Red Quasar' (ERQ)
• Peering through the dust II: $XMM-Newton$ observations of two additional FIRST-2MASS red quasars
• The Hunt for Red Quasars: Luminous Obscured Black Hole Growth Unveiled in the Stripe 82 X-ray Survey
• Resolving Disks & Mergers in $z\sim 2$ Heavily Reddened Quasars and their Companion Galaxies with ALMA
• The Complex X-ray Obscuration Environment in the Radio Loud Type 2 Quasar 3C 223

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• Accretion properties of X-ray AGN: Evidence for radiation-regulated obscuration with redshift-dependent host galaxy contribution
• SUPER VIII. Fast and Furious at $z\sim 2$: obscured type-2 active nuclei host faster ionised winds than type-1 systems
• Eddington Ratios of Dust-obscured Quasars at $z\lesssim 1$: Evidence Supporting Dust-obscured Quasars as Young Quasars
• X-ray spectral properties of dust-obscured galaxies in the XMM-SERVS coverage of the XMM-LSS field
• Red quasars: estimation of SMBH spin, mass and accretion disk inclination angle
• Probing Heavily Obscured AGN in Major Galaxy Mergers Using the mm-X-ray Correlation