The eROSITA Final Equatorial-Depth Survey (eFEDS): The first archetypal Quasar in the feedback phase discovered by eROSITA

Abstract

Theoretical models of galaxy-AGN co-evolution ascribe an important role for the feedback process to a short, luminous, obscured, and dust-enshrouded phase during which the accretion rate of the SMBH is expected to be at its maximum and the associated AGN-driven winds are also predicted to be maximally developed. To test this scenario, we have isolated a text-book candidate from the eROSITA Final Equatorial-Depth Survey (eFEDS) obtained within the Performance and Verification program of the eROSITA telescope on board Spectrum Roentgen Gamma. From an initial catalog of 246 hard X-ray selected sources matched with the photometric and spectroscopic information available within the eROSITA and Hyper Suprime-Cam consortia, three candidates Quasars in the feedback phase have been isolated applying the diagnostic proposed in Brusa et al. (2015). Only one source (eFEDSU J091157.5+014327) has a spectrum already available (from SDSS-DR16, z=0.603) and it unambiguously shows the presence of a broad component (FWHM~1650 km/s) in the [OIII]5007 line. The associated observed L_[OIII] is ~2.6x10^{42} erg/s, one to two orders of magnitude larger than that observed in local Seyferts and comparable to those observed in a sample of z~0.5 Type 1 Quasars. From the multiwavelength data available we derive an Eddington Ratio (L_bol/L_Edd) of ~0.25, and a bolometric correction in the hard X-ray of k_bol~10, lower than those observed for objects at similar bolometric luminosity. The presence of an outflow, the high X-ray luminosity and moderate X-ray obscuration (L_X~10^44.8 erg/s, N_H~2.7x10^22 cm^-2) and the red optical color, all match the prediction of quasars in the feedback phase from merger driven models. Forecasting to the full eROSITA all-sky survey with its spectroscopic follow-up, we predict that by the end of 2024 we will have a sample of few hundreds such objects at z=0.5-2.

11 pages, 6 figures, 2 tables. Resubmitted to A&A for the Special Issue: "The Early Data Release of eROSITA and Mikhail Pavlinsky ART-XC on the SRG Mission"

References in corpus (35)

• A Cosmological Framework for the Co-Evolution of Quasars, Supermassive Black Holes, and Elliptical Galaxies: I. Galaxy Mergers & Quasar Activity
• The Sloan Digital Sky Survey Quasar Catalog: Sixteenth Data Release
• Kiloparsec-scale outflows are prevalent among luminous AGN: outflows and feedback in the context of the overall AGN population
• eROSITA Science Book: Mapping the Structure of the Energetic Universe
• The eROSITA Final Equatorial Depth Survey (eFEDS): The X-ray catalog
• The XMM-Newton wide-field survey in the COSMOS field: I. Survey description
• Multiwavelength study of massive galaxies at z~2. II. Widespread Compton thick AGN and the concurrent growth of black holes and bulges
• A Significant Population of Very Luminous Dust-Obscured Galaxies at Redshift z ~ 2
• X-CIGALE: fitting AGN/galaxy SEDs from X-ray to infrared
• The Hard X-ray Spectrum as a Probe for Black-Hole Growth in Radio-Quiet Active Galactic Nuclei
• A statistical test for Nested Sampling algorithms
• Blowin' in the wind: both `negative' and `positive' feedback in an obscured high-z Quasar
• Very extended cold gas, star formation and outflows in the halo of a bright QSO at z>6
• The WISSH Quasars Project I. Powerful ionised outflows in hyper-luminous quasars
• Half of the Most Luminous Quasars May Be Obscured: Investigating the Nature of WISE-Selected Hot, Dust-Obscured Galaxies
• X-shooter reveals powerful outflows in z~1.5 X-ray selected obscured quasi stellar objects
• Prevalence of radio jets associated with galactic outflows and feedback from quasars
• The effect of radiation pressure on dusty absorbing gas around AGN
• Photometric Redshift with Bayesian Priors on Physical Properties of Galaxies
• Quasar-Mode Feedback in Nearby Type 1 Quasars: Ubiquitous Kiloparsec-Scale Outflows and Correlations with Black Hole Properties
• NuSTAR and XMM-Newton Observations of Luminous, Heavily Obscured, WISE-Selected Quasars at z ~ 2
• The eROSITA Final Equatorial-Depth Survey (eFEDS): Identification and characterization of the counterparts to the point-like sources
• SDSS-V: Pioneering Panoptic Spectroscopy
• A population of high-redshift type-2 quasars-I. Selection Criteria and Optical Spectra
• The eROSITA Final Equatorial-Depth Survey (eFEDS): The AGN Catalogue and its X-ray Spectral Properties
• Spitzer Observations of Young Red Quasars
• The Spitzer mid-infrared AGN survey. II-the demographics and cosmic evolution of the AGN population
• A Census of Gas Outflows in Type 2 Active Galactic Nuclei
• Revealing X-ray obscured quasars in SWIRE sources with extreme mid-IR/optical flux ratios
• The Sizes of Quasar Host Galaxies with the Hyper Suprime-Cam Subaru Strategic Program
• The hidden quasar nucleus of a WISE-selected, hyperluminous, dust-obscured galaxy at z ~ 2.3
• A near-infrared study of the multi-phase outflow in the type-2 quasar J1509+0434
• Does the mid-infrared-hard X-ray luminosity relation for active galactic nuclei depend on Eddington ratio?
• The eROSITA Final Equatorial-Depth Survey (eFEDS): A multiwavelength view of WISE mid-infrared galaxies/active galactic nuclei
• The eROSITA Final Equatorial-Depth Survey (eFEDS): An X-ray bright, extremely luminous infrared galaxy at z = 1.87

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• eROSITA Final Equatorial-Depth Survey (eFEDS): eFEDS X-ray view of WERGS Radio Galaxies selected by the Subaru/HSC and VLA/FIRST survey
• X-Ray Redshifts of Obscured Chandra Source Catalog AGN
• Ionised AGN outflows in the Goldfish galaxy -- The illuminating and interacting red quasar eFEDSJ091157.4+014327 at z $\sim$ 0.6
• The SRG/eROSITA all-sky survey: Hard X-ray selected Active Galactic Nuclei