Dense and warm neutral gas in BR1202-0725 at z = 4.7 as traced by the [O I] 145 um line

Abstract

We report the detection of [O I]145.5um in the BR 1202-0725 system, a compact group at z=4.7 consisting of a quasar (QSO), a submillimeter-bright galaxy (SMG), and three faint Lya emitters. By taking into account the previous detections and upper limits, the [O I]/[C II] line ratios of the now five known high-z galaxies are higher than or on the high-end of the observed values in local galaxies ([O I]/[C II]$\gtrsim$0.13). The high [O I]/[C II] ratios and the joint analysis with the previous detection of [N II] lines for both the QSO and the SMG suggest the presence of warm and dense neutral gas in these highly star-forming galaxies. This is further supported by new CO (12-11) line detections and a comparison with cosmological simulations. There is a possible positive correlation between the [NII]122/205 line ratio and the [O I]/[C II] ratio when all local and high-z sources are taken into account, indicating that the denser the ionized gas, the denser and warmer the neutral gas (or vice versa). The detection of the [O I] line in the BR1202-0725 system with a relatively short amount of integration with ALMA demonstrates the great potential of this line as a dense gas tracer for high-z galaxies.

arXiv comment11 pages, 7 figures, 1 table, Accepted for publication in ApJ, figures 2 and 4 show the main results

References in corpus (50)

• Astropy: A Community Python Package for Astronomy
• Galactic Stellar and Substellar Initial Mass Function
• Star Formation in Galaxies Along the Hubble Sequence
• Star Formation in AEGIS Field Galaxies since z=1.1 : The Dominance of Gradually Declining Star Formation, and the Main Sequence of Star-Forming Galaxies
• The reversal of the star formation-density relation in the distant universe
• A Cosmological Framework for the Co-Evolution of Quasars, Supermassive Black Holes, and Elliptical Galaxies: I. Galaxy Mergers & Quasar Activity
• A Highly Consistent Framework for the Evolution of the Star-Forming "Main Sequence" from z~0-6
• Far Infrared Spectroscopy of Normal Galaxies: Physical Conditions in the Interstellar Medium
• A Herschel/PACS Far Infrared Line Emission Survey of Local Luminous Infrared Galaxies
• KROME - a package to embed chemistry in astrophysical simulations
• Interstellar Carbon in Translucent Sightlines
• The ALPINE-ALMA [CII] Survey: data processing, catalogs, and statistical source properties
• 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
• Molecular gas and dust around a radio-quiet quasar at redshift 4.7
• The Abundance of Interstellar Nitrogen
• The Herschel Comprehensive (U)LIRG Emission Survey (HerCULES): CO Ladders, fine structure lines, and neutral gas cooling
• Far-infrared Fine-Structure Line Diagnostics of Ultraluminous Infrared Galaxies
• Detection of the 205 um [NII] Line from the Carina Nebula
• High resolution imaging of molecular line emission from high redshift QSOs
• Missing [CII] emission from early galaxies
• The Origins of [CII] Emission in Local Star-forming Galaxies
• The CO Luminosity Density at High-z (COLDz) Survey: A Sensitive, Large Area Blind Search for Low-J CO Emission from Cold Gas in the Early Universe with the Karl G. Jansky Very Large Array
• [CII] line emission in massive star-forming galaxies at z=4.7
• A Detection of [CII] line emission in the z=4.7 QSO BR1202-0725
• Far-infrared line spectra of active galaxies from the Herschel/PACS Spectrometer: the complete database
• An ALMA multi-line survey of the interstellar medium of the redshift 7.5 quasar host galaxy J1342+0928
• Strongly star-forming rotating disks in a complex merging system at z = 4,7 as revealed by ALMA
• SHINING, A Survey of Far Infrared Lines in Nearby Galaxies. I: Survey Description, Observational Trends, and Line Diagnostics
• The anatomy of an extreme starburst within 1.3Gyr of the Big Bang revealed by ALMA
• ALMA Reveals Weak [NII] Emission in "Typical" Galaxies and Intense Starbursts at z=5-6
• High-J CO SLEDs in nearby infrared bright galaxies observed by Herschel-PACS
• Spatially Resolved Interstellar Medium and Highly-Excited Dense Molecular Gas in the Most Luminous Quasar at z=6.327
• Detection of a Lyman-alpha Emission-Line Companion to the z=4.69 QSO BR1202-0725
• Far-infrared Herschel SPIRE spectroscopy of lensed starbursts reveals physical conditions of ionised gas
• Varying [CII]/[NII] line ratios in the interacting system BR1202-0725 at z=4.7
• Far-Infrared Properties of the Bright, Gravitationally Lensed Quasar J0439+1634 at z=6.5
• Predicting FIR lines from simulated galaxies
• Sensitive Radio Observations of High Redshift Dusty QSOs
• A dense, solar metallicity ISM in the z=4.2 dusty star-forming galaxy SPT0418-47
• Far-infrared line spectra of Seyfert galaxies from the Herschel-PACS Spectrometer
• BR1202-0725: An Extreme Multiple Merger at z = 4.7
• AGN feedback on molecular gas reservoirs in quasars at $z\sim$2.4
• Probing the full CO spectral line energy distribution (SLED) in the nuclear region of a quasar-starburst system at $z=6.003$
• Constraints on high-J CO emission lines in $z\sim 6$ quasars
• Constraining the Nature of Two Ly-alpha Emitters detected by ALMA at z = 4.7
• The Ionised- and Cool-Gas Content of The BR1202-0725 System as seen by MUSE and ALMA
• ALMA [NII] 205 micron Imaging Spectroscopy of the Interacting Galaxy System BRI 1202-0725 at Redshift 4.7
• First [NII]122$\mu$m line detection in a QSO-SMG pair BRI 1202-0725 at $z=4.69$
• Ionized and atomic interstellar medium in the z = 6.003 quasar SDSS J2310+1855

Cited by in corpus (9)

• Photodissociation and X-Ray Dominated Regions
• Physical constraints on the extended interstellar medium of the z=6.42 quasar J1148+5251: [CII] 158um, [NII] 205um and [OI] 146um observations
• Multi-Phase ISM in the z = 5.7 Hyperluminous Starburst SPT0346-52
• The Mass Ratio Distribution of Tertiary Induced Binary Black Hole Mergers
• Diagnosing the interstellar medium of galaxies with far-infrared emission lines II. [C II], [O I], [O III], [N II] and [N III] up to z=6
• Probing the He II re-Ionization ERa via Absorbing C IV Historical Yield (HIERACHY) I: A Strong Outflow from a z~4.7 Quasar
• Warm Gas in the Vicinity of a Supermassive Black hole 13 Billion Years Ago
• Uncovering the absorbed atomic Universe with the [OI]63um line
• Topological models to infer multiphase interstellar medium properties