Resolving the interstellar medium in the nuclear region of two z=5.78 quasar host galaxies with ALMA

Abstract

We present ALMA observations of the [CII] 158 $\mu$m fine structure line and dust continuum emission from two quasars, SDSS J104433.04-012502.2 and SDSS J012958.51-003539.7, at z=5.78. The ALMA observations at 0.2'' resolution map the dust and gas on kpc scales. The spatially resolved emission shows a similar trend of decreasing [CII]-FIR ratios with increasing FIR surface brightnesses as was found in the infrared luminous galaxies with intense star formation. We confirm the velocity gradients of [CII] emission found previously in SDSS J0129-0035. No clear evidence of order motion is detected in SDSS J1044-0125. The velocity maps and PV-diagrams also suggest turbulent gas clumps in both objects. We tentatively detect a [CII] peak offset 4.9 kpc to the East of SDSS J1044-0125. This may be associated with an infalling companion, or node of gas outflow. All these results suggest significant dynamical evolution of the ISM in the nuclear region of these young quasar-starburst systems. We fit the velocity map of the [CII] emission from SDSS J0129-0035 with a rotating disk model. The result suggests a face-on system with an inclination angle of 16 +/- 20 degree and constrains the lower limit of the host galaxy dynamical mass to be 2.6x10^10 Msun within the [CII] emitting region. It is likely that SDSS J0129-0035, as well as other young quasars with super massive black hole masses on order of 10^7 to 10^8 Msun, falls close to the black hole and host galaxy mass relation defined by local galaxies.

34 pages 11 figures, accepted for publication in ApJ

References in corpus (39)

• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• A luminous quasar at a redshift of z = 7.085
• An ultra-luminous quasar with a twelve-billion-solar-mass black hole at redshift 6.30
• A Dust-Obscured Massive Maximum-Starburst Galaxy at a Redshift of 6.34
• The Pan-STARRS1 distant z>5.6 quasar survey: more than 100 quasars within the first Gyr of the universe
• 350 Micron Dust Emission from High Redshift Quasars
• The Final SDSS High-Redshift Quasar Sample of 52 Quasars at z>5.7
• Formation of z ~ 6 quasars from hierarchical galaxy mergers
• A Kiloparsec-Scale Hyper-Starburst in a Quasar Host Less than 1 Gigayear after the Big Bang
• Galaxy growth in a massive halo in the first billion years of cosmic history
• 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
• [CII] 158 $\mu$m Emission as a Star Formation Tracer
• Gemini GNIRS near-infrared spectroscopy of 50 quasars at z>~5.7
• Star formation relations and CO SLEDs across the J-ladder and redshift
• The nature of the [CII] emission in dusty star-forming galaxies from the SPT survey
• Thermal Emission from Warm Dust in the Most Distant Quasars
• Star formation rate and dynamical mass of 10^8 solar mass black hole host galaxies at redshift 6
• ALMA Observations Show Major Mergers Among the Host Galaxies of Fast-growing, High-redshift Supermassive Black Holes
• A Herschel [CII] Galactic plane survey III: [CII] as a tracer of star formation
• Copious Amounts of Dust and Gas in a z=7.5 Quasar Host Galaxy
• The compact, ~1 kpc host galaxy of a quasar at z=7.1
• The Spatially Resolved [CII] Cooling Line Deficit in Galaxies
• The Origins of [CII] Emission in Local Star-forming Galaxies
• A wide dispersion in star formation rate and dynamical mass of 10^8 solar mass black hole host galaxies at redshift 6
• Molecular gas in three z~7 quasar host galaxies
• Millimeter and Radio Observations of z~6 Quasars
• 400 pc Imaging of a Massive Quasar Host Galaxy at a Redshift of 6.6
• High-redshift quasars and their host galaxies I: kinematical and dynamical properties and their tracers
• Spatially Resolved Interstellar Medium and Highly-Excited Dense Molecular Gas in the Most Luminous Quasar at z=6.327
• Strong FUV fields drive the [CII]/FIR deficit in z~3 dusty, star-forming galaxies
• Bright [CII] 158$\mu$m emission in a quasar host galaxy at $z=6.54$
• Gas dynamics of a luminous $z$ = 6.13 quasar ULAS J1319$+$0950 revealed by ALMA high resolution observations
• Predicting Galaxy Star Formation Rates via the Co-evolution of Galaxies and Halos
• Exceptional AGN-driven turbulence inhibits star formation in the 3C 326N radio-galaxy
• Dynamical Characterization of Galaxies at z~4-6 via Tilted Ring Fitting to ALMA [CII] Observations
• Interstellar Medium and Star Formation of Starburst Galaxies on the Merger Sequence
• The Nature of CO Emission From z~6 Quasars
• Constraining the ISM properties of the Cloverleaf quasar host galaxy with Herschel spectroscopy

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• 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
• The ALMA view of the high-redshift relation between supermassive black holes and their host galaxies
• No evidence for [CII] halos or high-velocity outflows in z>6 quasar host galaxies
• Making a supermassive star by stellar bombardment
• Physical constraints on the extended interstellar medium of the z=6.42 quasar J1148+5251: [CII] 158um, [NII] 205um and [OI] 146um observations
• Full of Orions: a 200-pc mapping of the interstellar medium in the redshift-3 lensed dusty star-forming galaxy SDP.81
• Formation of supermassive black hole seeds in nuclear star clusters via gas accretion and runaway collisions
• Probing the full CO spectral line energy distribution (SLED) in the nuclear region of a quasar-starburst system at $z=6.003$
• The interstellar medium distribution, gas kinematics, and system dynamics of the far-infrared luminous quasar SDSS J2310+1855 at $z=6.0$
• Effect of mass loss due to stellar winds on the formation of supermassive black hole seeds in dense nuclear star clusters
• Spatially resolved molecular interstellar medium in a $z=6.6$ quasar host galaxy
• What do observations tell us about the highest-redshift supermassive black holes?
• Infrared fine-structure lines at high redshift
• ALMA Observations of the Sub-kpc Structure of the Host Galaxy of a z= 6.5 Lensed Quasar: A Rotationally-Supported Hyper-Starburst System at the Epoch of Reionization