Stellar and black hole assembly in z<0.3 infrared-luminous mergers: intermittent starbursts vs. super-Eddington accretion

Abstract

We study stellar and black hole mass assembly in a sample of 42 infrared-luminous galaxy mergers at z<0.3 by combining results from radiative transfer modelling with archival measures of molecular gas and black hole mass. The ratios of stellar mass, molecular gas mass, and black hole mass to each other are consistent with those of massive gas-rich galaxies at z<0.3. The advanced mergers may show increased black hole mass to stellar mass ratios, consistent with the transition from AGN to ellipticals and implying substantial black hole mass growth over the course of the merger. Star formation rates are enhanced relative to the local main sequence, by factors of ~100 in the starburst and ~1.8 in the host. The starburst star formation rates appear distinct to star formation in the main sequence at all redshifts up to at least z~5. Starbursts may prefer late-stage mergers, but are observed at any merger stage. We do not find evidence that the starbursts in these low-redshift systems substantially increase the total stellar mass, with a soft upper limit on the stellar mass increase from starburst activity of about a factor of two. In contrast, 12 objects show evidence for super-Eddington accretion, associated with late-stage mergers, suggesting that many AGN in infrared-luminous mergers go through a super-Eddington phase. The super-Eddington phase may increase black hole mass by up to an order of magnitude at an accretion efficiency of 42+/-33% over a period of 44+/-22Myr. Our results imply that super-Eddington accretion is an important black hole growth channel in infrared-luminous galaxies at all redshifts.

MNRAS Accepted

References in corpus (49)

• The EAGLE project: Simulating the evolution and assembly of galaxies and their environments
• A Catalog of Quasar Properties from SDSS DR7
• A Highly Consistent Framework for the Evolution of the Star-Forming "Main Sequence" from z~0-6
• A Semi-Analytic Model for the Co-evolution of Galaxies, Black Holes, and Active Galactic Nuclei
• xCOLD GASS: the complete IRAM-30m legacy survey of molecular gas for galaxy evolution studies
• Evolution of the dust emission of massive galaxies up to z=4 and constraints on their dominant mode of star formation
• Galaxy growth in a massive halo in the first billion years of cosmic history
• Growing supermassive black holes in the late stages of galaxy mergers are heavily obscured
• Molecular gas in extreme star-forming environments: the starbursts Arp220 and NGC6240 as case studies
• Massive binary black holes in galactic nuclei and their path to coalescence
• Dense gas in luminous infrared galaxies
• Cold Molecular Gas in Merger Remnants: I. Formation of Molecular Gas Disks
• An ALMA survey of the SCUBA-2 Cosmology Legacy Survey UKIDSS/UDS field: High-resolution dust continuum morphologies and the link between sub-millimetre galaxies and spheroid formation
• Hubble Space Telescope H-Band Imaging Survey of Massive Gas-Rich Mergers
• Spitzer Observations of Young Red Quasars
• A hard X-ray view of Luminous and Ultra-luminous Infrared Galaxies in GOALS: I - AGN obscuration along the merger sequence
• Galaxy Mergers at z>1 in the HUDF: Evidence for a Peak in the Major Merger Rate of Massive Galaxies
• High-J CO SLEDs in nearby infrared bright galaxies observed by Herschel-PACS
• Virial Black Hole Mass Estimates for 280,000 AGNs from the SDSS Broad-Band Photometry and Single Epoch Spectra
• Star formation and nuclear activity in luminous infrared galaxies: An infrared through radio review
• A local baseline of the black hole mass scaling relations for active galaxies. IV. Correlations between $M_{\mathrm{BH}}$ and host galaxy $\sigma$, stellar mass, and luminosity
• Comprehensive Broadband X-ray and Multiwavelength Study of Active Galactic Nuclei in Local 57 Ultra/luminous Infrared Galaxies Observed with NuSTAR and/or Swift/BAT
• Black hole evolution: II. Spinning black holes in a supernova-driven turbulent interstellar medium
• MUSE view of Arp220: Kpc-scale multi-phase outflow and evidence for positive feedback
• AT 2017gbl: a dust obscured TDE candidate in a luminous infrared galaxy
• Extreme star formation events in quasar hosts over $0.5<\text{z}<4$
• AGN feedback in a galaxy merger: Multi-phase, galaxy-scale outflows including a fast molecular gas blob ~6 kpc away from IRAS F08572+3915
• Are local ULIRGs powered by AGN? The sub-kpc view of the 220 GHz continuum. PUMA II
• Implications of Symmetry and Pressure in Friedmann Cosmology. I. Formalism
• Galaxy Zoo: major galaxy mergers are not a significant quenching pathway
• Rapid Black Hole Growth at the Dawn of the Universe: A Super-Eddington Quasar at z=6.6
• Extreme CO Isotopologue Line Ratios in ULIRGS: Evidence for a top-heavy IMF
• A new look at local ultraluminous infrared galaxies: the atlas and radiative transfer models of their complex physics
• An Evolutionary Paradigm for Dusty Active Galaxies at Low Redshift
• HERUS: A CO Atlas from SPIRE Spectroscopy of local ULIRGs
• The Close AGN Reference Survey (CARS): No obvious signature of AGN feedback on star formation, but subtle trends
• SDSS-IV/SPIDERS: A Catalogue of X-Ray Selected AGN Properties; Spectral Properties and Black Hole Mass Estimates for SPIDERS SDSS DR14 Type 1 AGN
• Following Black Hole Scaling Relations Through Gas-Rich Mergers
• The connection between star formation and supermassive Black Hole activity in the local Universe
• The bright end of the infrared luminosity functions and the abundance of hyperluminous infrared galaxies
• The complex evolutionary paths of local infrared bright galaxies: a high angular resolution mid-infrared view
• Slowing down of cosmic growth of supermassive black holes: Theoretical prediction of the Eddington ratio distribution
• Merging timescale for supermassive black hole binary in interacting galaxy NGC 6240
• Searching for Super-Eddington Quasars using a Photon Trapping Accretion Disc Model
• Subaru Infrared Adaptive Optics-assisted High-spatial-resolution Imaging Search for Luminous Dual Active Galactic Nuclei in Nearby Ultraluminous Infrared Galaxies
• The mid-infrared and CO gas properties of an extreme star-forming FeLoBAL quasar
• Consistent analysis of the AGN LF in X-ray and MIR in the XMM-LSS field
• Deep Observations of CO and Free-Free Emission in Ultraluminous Infrared QSO IRAS F07599+6508
• A meeting at z~3: Young massive galaxies and an AGN within 30kpc of the luminous QSO LBQS0302-0019

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• Observational evidence for cosmological coupling of black holes and its implications for an astrophysical source of dark energy
• Evolutionary Paths of Active Galactic Nuclei and Their Host Galaxies
• A Preferential Growth Channel for Supermassive Black Holes in Elliptical Galaxies at z<2
• Hard X-Ray to Radio Multiwavelength SED Analysis of Local U/LIRGs in GOALS Sample with Self-consistent AGN Model Including Polar-dust Component
• The Opaque Heart of the Galaxy IC 860: Analogous Protostellar, Kinematics, Morphology, and Chemistry
• Getting More Out of Black Hole Superradiance: a Statistically Rigorous Approach to Ultralight Boson Constraints from Black Hole Spin Measurements
• What powers galactic outflows: nuclear starbursts or AGN?
• Classification of local ultraluminous infrared galaxies and quasars with kernel principal component analysis
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• Limited impact of jet induced feedback in the multi-phase nuclear interstellar medium of 4C12.50
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• The Wind Dynamics of Super-Eddington Sources in FRADO
• Quantum contribution to luminosity of quasars
• Exploring the properties of the obscured hyperluminous quasar COS-87259 at z=6.853
• The Nature of LoBAL QSOs: II. HST/WFC3 Observations Reveal Host Galaxies Dominated by Mergers