The WISSH quasars Project: II. Giant star nurseries in hyper-luminous quasars

Abstract

Studying the coupling between the energy output produced by the central quasar and the host galaxy is fundamental to fully understand galaxy evolution. Quasar feedback is indeed supposed to dramatically affect the galaxy properties by depositing large amounts of energy and momentum into the ISM. In order to gain further insights on this process, we study the SEDs of sources at the brightest end of the quasar luminosity function, for which the feedback mechanism is supposed to be at its maximum. We model the rest-frame UV-to-FIR SEDs of 16 WISE-SDSS Selected Hyper-luminous (WISSH) quasars at 1.8 < z < 4.6 disentangling the different emission components and deriving physical parameters of both the nuclear component and the host galaxy. We also use a radiative transfer code to account for the contribution of the quasar-related emission to the FIR fluxes. Most SEDs are well described by a standard combination of accretion disk+torus and cold dust emission. However, about 30% of them require an additional emission component in the NIR, with temperatures peaking at 750K, which indicates the presence of a hotter dust component in these powerful quasars. We measure extreme values of both AGN bolometric luminosity (LBOL > 10^47 erg/s) and SFR (up to 2000 Msun/yr). A new relation between quasar and star-formation luminosity is derived (LSF propto LQSO^(0.73)) by combining several Herschel-detected quasar samples from z=0 to 4. Future observations will be crucial to measure the molecular gas content in these systems, probe the impact between quasar-driven outflows and on-going star-formation, and reveal the presence of merger signatures in their host galaxies.

19 pages, 12 figures; Accepted for publication in Astronomy & Astrophysics on June 13, 2017

References in corpus (30)

• A Cosmological Framework for the Co-Evolution of Quasars, Supermassive Black Holes, and Elliptical Galaxies: I. Galaxy Mergers & Quasar Activity
• Massive molecular outflows and negative feedback in ULIRGs observed by Herschel-PACS
• 350 Micron Dust Emission from High Redshift Quasars
• Evidence for powerful AGN winds at high redshift: Dynamics of galactic outflows in radio galaxies during the "Quasar Era"
• Spitzer Quasar and ULIRG Evolution Study (QUEST): II. The Spectral Energy Distributions of Palomar-Green Quasars
• The Mean Star Formation Rate of X-ray selected Active Galaxies and its Evolution from z=2.5: Results from PEP-Herschel
• Dust covering factor, silicate emission and star formation in luminous QSOs
• Fast outflows in compact radio sources: evidence for AGN-induced feedback in the early stages of radio source evolution
• Star formation in a galactic outflow
• Blowin' in the wind: both `negative' and `positive' feedback in an obscured high-z Quasar
• Feedback from Active Galactic Nuclei: Energy- versus momentum-driving
• The WISSH Quasars Project I. Powerful ionised outflows in hyper-luminous quasars
• The Blast Wave Model for AGN Feedback: Effects on AGN Obscuration
• Mean Spectral Energy Distributions and Bolometric Corrections for Luminous Quasars
• The Most Luminous Galaxies Discovered by WISE
• Molecular outflows in local ULIRGs: energetics from multi-transition OH analysis
• Submillimeter Follow-up of WISE-Selected Hyperluminous Galaxies
• Thermal Emission from Warm Dust in the Most Distant Quasars
• HST-COS Observations of AGN. II. Extended Survey of Ultraviolet Composite Spectra from 159 Active Galactic Nuclei
• Probing the Evolution of IR Properties of z~6 Quasars: Spitzer Observations
• Heavily reddened type 1 quasars at z > 2 I: Evidence for significant obscured black-hole growth at the highest quasar luminosities
• High-redshift quasars host galaxies: is there a stellar mass crisis?
• Mapping the average AGN accretion rate in the SFR-M* plane for Herschel selected galaxies at 0<z<2.5
• The Discovery of Gas-Rich, Dusty Starbursts in Luminous Reddened Quasars at $z\sim 2.5$ with ALMA
• What produces the far-infrared/submm emission in the most luminous QSOs?
• The hidden quasar nucleus of a WISE-selected, hyperluminous, dust-obscured galaxy at z ~ 2.3
• Intrinsic AGN SED & black hole growth in the Palomar--Green quasars
• The Herschel Virgo Cluster Survey. XX. Dust and gas in the foreground Galactic cirrus
• The Herschel Virgo Cluster Survey. XVII. SPIRE point-source catalogs and number counts
• Dusty Quasars at High Redshifts

Cited by in corpus (41)

• X-CIGALE: fitting AGN/galaxy SEDs from X-ray to infrared
• Fitting AGN/galaxy X-ray-to-radio SEDs with CIGALE and improvement of the code
• The WISSH Quasars Project III. X-ray properties of hyper-luminous quasars
• Dissecting the active galactic nucleus in Circinus -- II. A thin dusty disc and a polar outflow on parsec scales
• The WISSH QSOs project IX. Cold gas content and environment of luminous QSOs at z~2.4-4.7
• No signs of star formation being regulated in the most luminous quasars at z~2 with ALMA
• SUPER III. Broad Line Region properties of AGN at z$\sim$2
• Does the mid-infrared-hard X-ray luminosity relation for active galactic nuclei depend on Eddington ratio?
• Multi-phase outflows in high redshift quasar host galaxies
• ALMA Observations of Quasar Host Galaxies at $z\simeq 4.8$
• A Spatially-Resolved Survey of Distant Quasar Host Galaxies: I. Dynamics of galactic outflows
• SUPER V. ALMA continuum observations of z~2 AGN and the elusive evidence of outflows influencing star formation
• High-resolution, 3D radiative transfer modelling IV. AGN-powered dust heating in NGC 1068
• The WISSH quasars project XI. The mean Spectral Energy Distribution and Bolometric Corrections of the most luminous quasars
• Resolving the Interstellar Medium in Ultraluminous Infrared QSO Hosts with ALMA
• The black hole and host galaxy growth in an isolated $z\sim 6$ QSO observed with ALMA
• Accurate dust temperature and star formation rate in the most luminous $z>6$ quasar in the HYPerluminous quasars at the Epoch of ReionizatION (HYPERION) sample
• HYPERION. Coevolution of supermassive black holes and galaxies at $z>6$ and the build-up of massive galaxies
• Cosmological simulations of quasar fueling to sub-parsec scales using Lagrangian hyper-refinement
• SMM J04135+10277: A distant QSO-starburst system caught by ALMA
• Local Swift-BAT active galactic nuclei prefer circumnuclear star formation
• Molecular Outflows in z > 6 QSO Hosts Driven by Star Formation
• X-ray emission from a rapidly accreting narrow-line Seyfert 1 galaxy at z=6.56
• Piercing through Highly Obscured and Compton-thick AGNs in the Chandra Deep Fields. II. Are Highly Obscured AGNs the Missing Link in the Merger-Triggered AGN-Galaxy Coevolution Models?
• AGN and star formation across cosmic time
• Ionized Gas Outflows in Low Excitation Radio Galaxies Are Radiation Driven
• Alma Reveals A Gas-rich, Maximum-starburst In The Hyperluminous, Dust-obscured Quasar W0533-3401 AT $z\sim 2.9$
• Physical properties of hyperluminous, dust-obscured quasars at $z\sim 3$: multiwavelength Spectral Energy Distribution analysis and cold gas content revealed by ALMA
• Molecular gas and dust properties in $z>7$ quasar hosts
• The eROSITA Final Equatorial-Depth Survey (eFEDS): An X-ray bright, extremely luminous infrared galaxy at z = 1.87
• GA-NIFS: Mapping $z\simeq 3.5$ AGN-driven ionized outflows in the COSMOS field
• The star-formation rates of QSOs
• NGC 3147: a prototypical low-luminosity active galactic nucleus with double-peaked optical and ultraviolet lines
• What powers galactic outflows: nuclear starbursts or AGN?
• What is the origin of the stacked radio emission in radio-undetected quasars?: Insights from a radio-infrared image stacking analysis
• Exploring the links between quasar winds and radio emission along the Main Sequence at high redshift
• Orientation effects on the near-infrared broad band emission of quasars
• Neutral outflows in high-z QSOs
• The $M_{\mathrm{BH}}-M_{\star }$ Relation of the hyperluminous Dust-obscured Quasars up to $z\sim 4$
• ALMA survey of a massive node of the Cosmic Web at $z\sim 3$. II. A dynamically cold and massive disk galaxy in the proximity of a hyperluminous quasar
• The role of young and evolved stars in the heating of dust in local galaxies