Far-infrared Properties of the Bright, Gravitationally Lensed Quasar J0439+1634 at z = 6.5

Jinyi Yang, Bram Venemans, Feige Wang, Xiaohui Fan, Mladen Novak, Roberto Decarli, Fabian Walter, Minghao Yue, Emmanuel Momjian, Charles R. Keeton, Ran Wang, Ann I Zabludoff, Xue Bing Wu, Fuyan Bian

Research output: Contribution to journalArticle

Abstract

We present IRAM NOrthern Extended Millimeter Array, James Clerk Maxwell Telescope/Submillimetre Common-User Bolometer Array-2 and Very Large Array (VLA) observations of the most distant known gravitationally lensed quasar, J0439+1634 at z = 6.5. We detect strong dust emission, [C ii] 158 μm, [C i] 369 μm, [O i] 146 μm, CO(6-5), CO(7-6), CO(9-8), CO(10-9), H2O 31,2-22,1, and H2O 32,1-31,2 lines, as well as a weak radio continuum. The strong [C ii] line yields a systemic redshift of the host galaxy to be z = 6.5188 ± 0.0002. The magnification makes J0439+1634 the far-infrared (FIR) brightest quasar at z > 6 known, with the brightest [C ii] line yet detected at this redshift. The FIR luminosity is (3.4 ± 0.2) × 1013 μ -1 L o, where μ ∼2.6-6.6 is the magnification of the host galaxy, estimated based on the lensing configuration from HST imaging. We estimate the dust mass to be (2.2 ± 0.1) × 109 μ -1 . The CO spectral line energy distribution using four CO lines are best fit by a two-component model of the molecular gas excitation. The estimates of molecular gas mass derived from CO lines, and atomic carbon mass are consistent, in the range of (3.9-8.9) × 1010 μ -1 . The [C ii]/[C i], [C ii]/CO, and [O i]/[C ii] line luminosity ratios suggest a photodissociation region model with more than one component. The ratio of H2O 32,1-31,2 line luminosity to L TIR is consistent with values in local and high-redshift ultra-/hyper-luminous infrared galaxies. The VLA observations reveal an unresolved radio continuum source, and indicate that J0439+1634 is a radio-quiet quasar with R = 0.05-0.17.

Original languageEnglish (US)
Article number153
JournalAstrophysical Journal
Volume880
Issue number2
DOIs
StatePublished - Aug 1 2019

Fingerprint

quasars
Very Large Array (VLA)
luminosity
molecular gases
galaxies
magnification
radio
dust
continuums
bolometers
estimates
photodissociation
line spectra
energy distribution
gas
telescopes
carbon
configurations
excitation
energy

Keywords

  • cosmology: observations
  • galaxies: active
  • galaxies: high-redshift
  • galaxies: ISM

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Far-infrared Properties of the Bright, Gravitationally Lensed Quasar J0439+1634 at z = 6.5. / Yang, Jinyi; Venemans, Bram; Wang, Feige; Fan, Xiaohui; Novak, Mladen; Decarli, Roberto; Walter, Fabian; Yue, Minghao; Momjian, Emmanuel; Keeton, Charles R.; Wang, Ran; Zabludoff, Ann I; Wu, Xue Bing; Bian, Fuyan.

In: Astrophysical Journal, Vol. 880, No. 2, 153, 01.08.2019.

Research output: Contribution to journalArticle

Yang, J, Venemans, B, Wang, F, Fan, X, Novak, M, Decarli, R, Walter, F, Yue, M, Momjian, E, Keeton, CR, Wang, R, Zabludoff, AI, Wu, XB & Bian, F 2019, 'Far-infrared Properties of the Bright, Gravitationally Lensed Quasar J0439+1634 at z = 6.5', Astrophysical Journal, vol. 880, no. 2, 153. https://doi.org/10.3847/1538-4357/ab2a02
Yang, Jinyi ; Venemans, Bram ; Wang, Feige ; Fan, Xiaohui ; Novak, Mladen ; Decarli, Roberto ; Walter, Fabian ; Yue, Minghao ; Momjian, Emmanuel ; Keeton, Charles R. ; Wang, Ran ; Zabludoff, Ann I ; Wu, Xue Bing ; Bian, Fuyan. / Far-infrared Properties of the Bright, Gravitationally Lensed Quasar J0439+1634 at z = 6.5. In: Astrophysical Journal. 2019 ; Vol. 880, No. 2.
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AU - Fan, Xiaohui

AU - Novak, Mladen

AU - Decarli, Roberto

AU - Walter, Fabian

AU - Yue, Minghao

AU - Momjian, Emmanuel

AU - Keeton, Charles R.

AU - Wang, Ran

AU - Zabludoff, Ann I

AU - Wu, Xue Bing

AU - Bian, Fuyan

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N2 - We present IRAM NOrthern Extended Millimeter Array, James Clerk Maxwell Telescope/Submillimetre Common-User Bolometer Array-2 and Very Large Array (VLA) observations of the most distant known gravitationally lensed quasar, J0439+1634 at z = 6.5. We detect strong dust emission, [C ii] 158 μm, [C i] 369 μm, [O i] 146 μm, CO(6-5), CO(7-6), CO(9-8), CO(10-9), H2O 31,2-22,1, and H2O 32,1-31,2 lines, as well as a weak radio continuum. The strong [C ii] line yields a systemic redshift of the host galaxy to be z = 6.5188 ± 0.0002. The magnification makes J0439+1634 the far-infrared (FIR) brightest quasar at z > 6 known, with the brightest [C ii] line yet detected at this redshift. The FIR luminosity is (3.4 ± 0.2) × 1013 μ -1 L o, where μ ∼2.6-6.6 is the magnification of the host galaxy, estimated based on the lensing configuration from HST imaging. We estimate the dust mass to be (2.2 ± 0.1) × 109 μ -1 . The CO spectral line energy distribution using four CO lines are best fit by a two-component model of the molecular gas excitation. The estimates of molecular gas mass derived from CO lines, and atomic carbon mass are consistent, in the range of (3.9-8.9) × 1010 μ -1 . The [C ii]/[C i], [C ii]/CO, and [O i]/[C ii] line luminosity ratios suggest a photodissociation region model with more than one component. The ratio of H2O 32,1-31,2 line luminosity to L TIR is consistent with values in local and high-redshift ultra-/hyper-luminous infrared galaxies. The VLA observations reveal an unresolved radio continuum source, and indicate that J0439+1634 is a radio-quiet quasar with R = 0.05-0.17.

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KW - galaxies: ISM

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