400 pc Imaging of a Massive Quasar Host Galaxy at a Redshift of 6.6

Abstract

We report high spatial resolution (~0.076", 410pc) Atacama Large Millimeter/submillimeter Array imaging of the dust continuum and the ionized carbon line [CII] in a luminous quasar host galaxy at z=6.6, 800 million years after the big bang. Based on previous studies, this galaxy hosts a ~1x10^9 M_sun black hole and has a star-formation rate of ~1500 M_sun/yr. The unprecedented high resolution of the observations reveals a complex morphology of gas within 3kpc of the accreting central black hole. The gas has a high velocity dispersion with little ordered motion along the line of sight, as would be expected from gas accretion that has yet to settle in a disk. In addition, we find the presence of [CII] cavities in the gas distribution (with diameters of ~0.5kpc), offset from the central black hole. This unique distribution and kinematics cannot be explained by a simple model. Plausible scenarios are that the gas is located in a truncated or warped disk, or the holes are created by interactions with nearby galaxies or due to energy injection into the gas. In the latter case, the energy required to form the cavities must originate from the central active galactic nucleus, as the required energy far exceeds the energy output expected from supernovae. This energy input into the gas, however, does not inhibit the high rate of star-formation. Both star-formation and black hole activity could have been triggered by interactions with satellite galaxies; our data reveal three additional companions detected in [CII] emission around the quasar.

arXiv commentPublished in ApJ Letters

References in corpus (43)

• emcee: The MCMC Hammer
• Planck 2015 results. XIII. Cosmological parameters
• Gaia Data Release 2. Summary of the contents and survey properties
• Energy input from quasars regulates the growth and activity of black holes and their host galaxies
• A luminous quasar at a redshift of z = 7.085
• Cool Gas in High Redshift Galaxies
• An 800-million-solar-mass black hole in a significantly neutral Universe at redshift 7.5
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• The CO-to-H2 Conversion Factor and Dust-to-Gas Ratio on Kiloparsec Scales in Nearby Galaxies
• The Interstellar Medium In Galaxies Seen A Billion Years After The Big Bang
• The applicability of FIR fine-structure lines as Star Formation Rate tracers over wide ranges of metallicities and galaxy types
• Star Formation and Gas Kinematics of Quasar Host Galaxies at z~6: New insights from ALMA
• 350 Micron Dust Emission from High Redshift Quasars
• Physical properties of 15 quasars at $z\gtrsim 6.5$
• Resolved Molecular Gas in a Quasar Host Galaxy at Redshift z=6.42
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• The [C II] emission as a molecular gas mass tracer in galaxies at low and high redshift
• Rapidly star-forming galaxies adjacent to quasars at redshifts exceeding 6
• Black hole mass estimates and emission-line properties of a sample of redshift z>6.5 quasars
• Bright [CII] and dust emission in three z>6.6 quasar host galaxies observed by ALMA
• High-excitation CO in a quasar host galaxy at z=6.42
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• Holes and Shells in the Interstellar Medium of the Nearby Dwarf Galaxy IC 2574
• No clear submillimetre signature of suppressed star formation amongst X-ray luminous AGNs
• Thermal Emission from Warm Dust in the Most Distant Quasars
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• Redshift 6.4 host galaxies of 10^8 solar mass black holes: low star formation rate and dynamical mass
• ALMA Observations Show Major Mergers Among the Host Galaxies of Fast-growing, High-redshift Supermassive Black Holes
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• SHINING, A Survey of Far Infrared Lines in Nearby Galaxies. II: Line-Deficit Models, AGN impact, [CII]-SFR Scaling Relations, and Mass-Metallicity Relation in (U)LIRGS
• Dust emission in an accretion-rate-limited sample of z>6 quasars
• The origin of most massive black holes at high-z: BLUETIDES and the next quasar frontier
• The dust and [CII] morphologies of redshift ~4.5 sub-millimeter galaxies at ~200pc resolution: The absence of large clumps in the interstellar medium of high-redshift galaxies
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• Large Scale Environment of a $z=6.61$ Luminous Quasar Probed by Ly$\alpha$ Emitters and Lyman Break Galaxies

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