First detection of the [OI] 63-um emission from a redshift 6 dusty galaxy

Abstract

We report a ground-based detection of the [OI] 63-um line in a z=6.027 gravitationally lensed dusty star-forming galaxy (DSFG) G09.83808 using the APEX SEPIA 660 receiver, the first unambiguous detection of the [OI]63 line beyond redshift 3, and the first obtained from the ground. The [OI]63 line is robustly detected at 22$\pm$5 Jy km s${}^{-1}$, corresponding to an intrinsic (de-lensed) luminosity of $(5.4\pm 1.3)\times 10^9$ L${}_{\odot }$. With the [OI]63/[CII] luminosity ratio of 4, the [OI]63 line is the main coolant of the neutral gas in this galaxy, in agreement with model predictions. The high [OI]63 luminosity compensates for the pronounced [CII] deficit ([CII]/FIR$\simeq 4\times 10^{-4}$). Using photon-dominated region models, we derive a source-averaged gas density $n=10^{4.0}$ cm${}^{-3}$, and far-UV field strength $G=10^4{G}_0$, comparable to the z=2-4 DSFG population. If G09.83808 represents a typical high-redshift DSFG, the [OI]63 line from z=6 non-lensed DSFGs should be routinely detectable in ALMA Band 9 observations with $\sim$15 min on-source, opening a new window to study the properties of the earliest DSFGs.

Submitted to ApJL

References in corpus (14)

• A Dust-Obscured Massive Maximum-Starburst Galaxy at a Redshift of 6.34
• A Compendium of Far-Infrared Line and Continuum Emission for 227 Galaxies Observed by the Infrared Space Observatory
• Rapidly star-forming galaxies adjacent to quasars at redshifts exceeding 6
• The Herschel Comprehensive (U)LIRG Emission Survey (HerCULES): CO Ladders, fine structure lines, and neutral gas cooling
• The nature of the [CII] emission in dusty star-forming galaxies from the SPT survey
• ISM properties of a Massive Dusty Star-Forming Galaxy discovered at z ~ 7
• SIGAME simulations of the [CII], [OI] and [OIII] line emission from star forming galaxies at z ~ 6
• Probing Cosmic Dawn with Emission Lines: Predicting Infrared and Nebular Line Emission for ALMA and JWST
• SEPIA - a new single pixel receiver at the APEX Telescope
• 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
• CO, H2O, H2O+ line and dust emission in a z = 3.63 strongly lensed starburst merger at sub-kiloparsec scales
• The IRAM/GISMO two-millimeter survey in the COSMOS field

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• Uncovering the absorbed atomic Universe with the [OI]63um line
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