Imaging Atomic and Highly Excited Molecular Gas in a z=6.42 Quasar Host Galaxy: Copious Fuel for an Eddington-Limited Starburst at the End of Cosmic Reionization

Abstract

We have imaged CO(J=7-6) and CI(3P2-3P1) emission in the host galaxy of the z=6.42 quasar SDSS J114816.64+525150.3 (hereafter: J1148+5251) through observations with the Plateau de Bure Interferometer. The region showing CO(J=7-6) emission is spatially resolved, and its size of 5 kpc is in good agreement with earlier CO(J=3-2) observations. In combination with a revised model of the collisional line excitation in this source, this indicates that the highly excited molecular gas traced by the CO J=7-6 line is subthermally excited (showing only 58+/-8% of the CO J=3-2 luminosity), but not more centrally concentrated. We also detect CI(3P2-3P1) emission in the host galaxy of J1148+5251, but the line is too faint to enable a reliable size measurement. From the CI(3P2-3P1) line flux, we derive a total atomic carbon mass of M_CI=1.1x10^7 M_sun, which corresponds to ~5x10^-4 times the total molecular gas mass. We also searched for H2O(J_KaKc=2_12-1_01) emission, and obtained a sensitive line luminosity limit of L'_H2O<4.4x10^9 K kms pc^2, i.e., <15% of the CO(J=3-2) luminosity. The warm, highly excited molecular gas, atomic gas and dust in this quasar host at the end of cosmic reionization maintain an intense starburst that reaches surface densities as high as predicted by (dust opacity) Eddington limited star formation over kiloparsec scales.

8 pages, 6 figures, 1 table, to appear in ApJ (accepted July 31, 2009)

References in corpus (21)

• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• 350 Micron Dust Emission from High Redshift Quasars
• A Kiloparsec-Scale Hyper-Starburst in a Quasar Host Less than 1 Gigayear after the Big Bang
• Highly-excited CO emission in APM08279+5255 at z=3.9
• The Relationship Between Molecular Gas Tracers and Kennicutt-Schmidt Laws
• Luminous Infrared Galaxies with the Submillimeter Array: I. Survey Overview and the Central Gas to Dust Ratio
• CO(1-0) in z>2 Quasar Host Galaxies: No Evidence for Extended Molecular Gas Reservoirs
• CO(1-0) in z >/~ 4 Quasar Host Galaxies: No Evidence for Extended Molecular Gas Reservoirs
• Thermal Emission from Warm Dust in the Most Distant Quasars
• Probing the Evolution of IR Properties of z~6 Quasars: Spitzer Observations
• Molecular Star Formation Rate Indicators in Galaxies
• HCN Observations of Dense Star-Forming Gas in High Redshift Galaxies
• Imaging the Molecular Gas in a z=3.9 Quasar Host Galaxy at 0.3" Resolution: A Central, Sub-Kiloparsec Scale Star Formation Reservoir in APM 08279+5255
• A survey of submillimeter C and CO lines in nearby galaxies
• Modeling the Dust Properties of z ~ 6 Quasars with ART^2 -- All-wavelength Radiative Transfer with Adaptive Refinement Tree
• Observations of Dense Molecular Gas in a Quasar Host Galaxy at z=6.42: Further Evidence for a Non-Linear Dense Gas - Star Formation Relation at Early Cosmic Times
• The Nature of CO Emission From z~6 Quasars
• Atomic Carbon in APM 08279+5255 at z=3.91
• The CO line SED and atomic carbon in IRAS F10214+4724
• A Sensitive Search For [NII] Emission in a z=6.4 Quasar Host Galaxy
• High Sensitivity Array Observations of the $z=4.4$ QSO BRI 1335-0417

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• Big Three Dragons: Molecular Gas in a Bright Lyman-Break Galaxy at $z=7.15$
• Unveiling the warm dense ISM in $z>6$ quasar host galaxies via water vapor emission
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• Extreme Galaxies During Reionization: Testing ISM and Disk Models
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• Infrared fine-structure lines at high redshift
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