Detection of the [O I] 63 $\mu$m emission line from the $z=6.04$ quasar J2054-0005

Abstract

We report the highest-redshift detection of [O I] 63 $\mu$m from a luminous quasar, J2054-0005, at $z=6.04$ based on the Atacama Large Millimeter/sub-millimeter Array Band 9 observations. The [O I] 63 $\mu$m line luminosity is $(4.5\pm 1.5)\times 10^9{L}_{\odot }$, corresponding to the [O I] 63 $\mu$m-to-far-infrared luminosity ratio of $\approx 6.7\times 10^{-4}$, which is consistent with the value obtained in the local universe. Remarkably, [O I] 63 $\mu$m is as bright as [C II] 158 $\mu$m, resulting in the [O I]-to-[C II] line luminosity ratio of $1.3\pm 0.5$. Based on a careful comparison of the luminosity ratios of [O I] 63 $\mu$m, [C II] 158 $\mu$m, and dust continuum emission to models of photo-dissociation regions, we find that J2054-0005 has a gas density log($n_{\mathrm{H}}$/cm${}^{-3}$)$=3.7\pm 0.3$ and an incident far-ultraviolet radiation field of log($G/G_0$)$=3.0\pm 0.1$, showing that [O I] 63 $\mu$m serves as an important coolant of the dense and warm gas in J2054-0005. A close examination of the [O I] and [C II] line profiles suggests that the [O I] line may be partially self-absorbed, however deeper observations are needed to verify this conclusion. Regardless, the gas density and incident radiation field are in a broad agreement with the values obtained in nearby star-forming galaxies and objects with [O I] 63 $\mu$m observations at $z=1-3$ with the Herschel Space Observatory. These results demonstrate the power of ALMA high-frequency observations targeting [O I] 63 $\mu$m to examine the properties of photo-dissociation regions in high-redshift galaxies.

Accepted for publication to PASJ. 5 figures and 3 tables

References in corpus (29)

• A Cosmological Framework for the Co-Evolution of Quasars, Supermassive Black Holes, and Elliptical Galaxies: I. Galaxy Mergers & Quasar Activity
• CASA, the Common Astronomy Software Applications for Radio Astronomy
• Diagnostics of irradiated dense gas in galaxy nuclei. II. A grid of XDR and PDR models
• A Compendium of Far-Infrared Line and Continuum Emission for 227 Galaxies Observed by the Infrared Space Observatory
• The Herschel Dwarf Galaxy Survey: I. Properties of the low-metallicity ISM from PACS spectroscopy
• A Survey of z~6 Quasars in the SDSS Deep Stripe: I. a Flux-Limited Sample at z_{AB}<21
• The Herschel Comprehensive (U)LIRG Emission Survey (HerCULES): CO Ladders, fine structure lines, and neutral gas cooling
• Photodissociation and X-Ray Dominated Regions
• Kiloparsec-scale ALMA Imaging of [CII] and Dust Continuum Emission of 27 Quasar Host Galaxies at z~6
• The ALPINE-ALMA [CII] Survey: Size of Individual Star-Forming Galaxies at z=4-6 and their Extended Halo Structure
• Detection of the 205 um [NII] Line from the Carina Nebula
• The X-shooter/ALMA Sample of Quasars in the Epoch of Reionization. II. Black Hole Masses, Eddington Ratios, and the Formation of the First Quasars
• Strong C+ emission in galaxies at z~1-2: Evidence for cold flow accretion powered star formation in the early Universe
• Strong FUV fields drive the [CII]/FIR deficit in z~3 dusty, star-forming galaxies
• The interstellar medium in high-redshift submillimeter galaxies as probed by infrared spectroscopy
• Molecular gas in z~6 quasar host galaxies
• Full SED fitting with the KOSMA-τ PDR code - I. Dust modelling
• ALMA Observations of Multiple-CO and C Lines Toward the Active Galactic Nucleus of NGC 7469: X-Ray-dominated Region Caught in the Act
• Star Formation and ISM Properties in Host Galaxies of Three Far-infrared Luminous Quasars at $z\sim 6$
• The PhotoDissociation Region Toolbox: Software and Models for Astrophysical Analysis
• Constraining the ISM properties of the Cloverleaf quasar host galaxy with Herschel spectroscopy
• First detection of the [OI] 63-um emission from a redshift 6 dusty galaxy
• HYPERION. Coevolution of supermassive black holes and galaxies at $z>6$ and the build-up of massive galaxies
• To see or not to see a $z\sim 13$ galaxy, that is the question
• Multi-Phase ISM in the z = 5.7 Hyperluminous Starburst SPT0346-52
• Big Three Dragons: Molecular Gas in a Bright Lyman-Break Galaxy at $z=7.15$
• Observations of [OI]63micron line emission in main-sequence galaxies at z~1.5
• A Herschel mapping of [C ii], [O i] and [O iii] lines from the circumnuclear region of M31
• H1821+643: The most X-ray and infrared luminous AGN in the Swift/BAT survey in the process of rapid stellar and supermassive black hole mass assembly

Cited by in corpus (4)

• The [NII] 205 $\mu$m line emission from high-z SMGs and QSOs
• High$-z$ [OI] emission lines: ColdSIM simulations and ALMA observations
• Uncovering the absorbed atomic Universe with the [OI]63um line
• The ALMA View of High-Redshift Galaxy Formation