TY - JOUR
T1 - Far-infrared Properties of the Bright, Gravitationally Lensed Quasar J0439+1634 at z = 6.5
AU - Yang, Jinyi
AU - Venemans, Bram
AU - Wang, Feige
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
AU - Wu, Xue Bing
AU - Bian, Fuyan
N1 - Publisher Copyright:
© 2019. The American Astronomical Society. All rights reserved..
PY - 2019/8/1
Y1 - 2019/8/1
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.
AB - 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.
KW - cosmology: observations
KW - galaxies: ISM
KW - galaxies: active
KW - galaxies: high-redshift
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U2 - 10.3847/1538-4357/ab2a02
DO - 10.3847/1538-4357/ab2a02
M3 - Article
AN - SCOPUS:85072053793
SN - 0004-637X
VL - 880
JO - Astrophysical Journal
JF - Astrophysical Journal
IS - 2
M1 - 153
ER -