No evidence for [CII] halos or high-velocity outflows in z>6 quasar host galaxies

Abstract

We study the interstellar medium in a sample of 27 high-redshift quasar host galaxies at z>6, using the [CII] 158um emission line and the underlying dust continuum observed at ~1kpc resolution with ALMA. By performing uv-plane spectral stacking of both the high and low spatial resolution data, we investigate the spatial and velocity extent of gas, and the size of the dust-emitting regions. We find that the average surface brightness profile of both the [CII] and the dust continuum emission can be described by a steep component within a radius of 2kpc, and a shallower component with a scale length of 2kpc, detected up to ~10kpc. The surface brightness of the extended emission drops below ~1% of the peak at radius of ~5kpc, beyond which it constitutes 10-20% of the total measured flux density. Although the central component of the dust continuum emission is more compact than that of the [CII] emission, the extended components have equivalent profiles. The observed extended components are consistent with those predicted by hydrodynamical simulations of galaxies with similar infrared luminosities, where the dust emission is powered by star formation. The [CII] spectrum measured in the mean uv-plane stacked data can be described by a single Gaussian, with no observable [CII] broad-line emission (velocities in excess of >500km/s), that would be indicative of outflows. Our findings suggest that we are probing the interstellar medium and associated star formation in the quasar host galaxies up to radii of 10kpc, whereas we find no evidence for halos or outflows.

32 pages, 20 figures, 1 table, accepted for publication in ApJ

References in corpus (28)

• The UKIRT Infrared Deep Sky Survey (UKIDSS)
• A luminous quasar at a redshift of z = 7.085
• The Pan-STARRS1 distant z>5.6 quasar survey: more than 100 quasars within the first Gyr of the universe
• Pōniuā'ena: A Luminous $z=7.5$ Quasar Hosting a 1.5 Billion Solar Mass Black Hole
• The Final SDSS High-Redshift Quasar Sample of 52 Quasars at z>5.7
• Physical properties of 15 quasars at $z\gtrsim 6.5$
• Kiloparsec-scale dust disks in high-redshift luminous submillimeter galaxies
• A Kiloparsec-Scale Hyper-Starburst in a Quasar Host Less than 1 Gigayear after the Big Bang
• Rapidly star-forming galaxies adjacent to quasars at redshifts exceeding 6
• Very extended cold gas, star formation and outflows in the halo of a bright QSO at z>6
• Kiloparsec-scale ALMA Imaging of [CII] and Dust Continuum Emission of 27 Quasar Host Galaxies at z~6
• Star formation rate and dynamical mass of 10^8 solar mass black hole host galaxies at redshift 6
• A Cold, Massive, Rotating Disk Galaxy 1.5 Billion Years after the Big Bang
• Radial distribution of dust, stars, gas, and star-formation rate in DustPedia face-on galaxies
• Copious Amounts of Dust and Gas in a z=7.5 Quasar Host Galaxy
• 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
• The REQUIEM Survey I: A Search for Extended Ly-Alpha Nebular Emission Around 31 z>5.7 Quasars
• A spatially resolved study of cold dust, molecular gas, HII regions, and stars in the $z=2.12$ submillimeter galaxy ALESS67.1
• Molecular gas in three z~7 quasar host galaxies
• 400 pc Imaging of a Massive Quasar Host Galaxy at a Redshift of 6.6
• Predictions for the spatial distribution of the dust continuum emission in 1<z<5 star-forming galaxies
• The Size Evolution of Star-forming Galaxies Since z~7 Using ZFOURGE
• The discovery of the first luminous z~6 quasar in the UKIDSS Large Area Survey
• ALMA Reveals Weak [NII] Emission in "Typical" Galaxies and Intense Starbursts at z=5-6
• Spatially Resolved Interstellar Medium and Highly-Excited Dense Molecular Gas in the Most Luminous Quasar at z=6.327
• Cool dust heating and temperature mixing in nearby star-forming galaxies
• Strong FUV fields drive the [CII]/FIR deficit in z~3 dusty, star-forming galaxies
• Near-Infrared Imaging of a z=6.42 Quasar Host Galaxy With the Hubble Space Telescope Wide Field Camera 3

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