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Physical Constraints on the Extended Interstellar Medium of the z = 6.42 Quasar J1148+5251: [C ii] 158 μm , [N ii] 205 μm , and [O i] 146 μm Observations
Abstract We report new Northern Extended Millimeter Array observations of the [C ii ] 158 μ m , [N ii ] 205 μ m , and [O i ] 146 μ m atomic fine structure lines (FSLs) and dust continuum emission of J1148+5251, a z = 6.42 quasar, which probe the physical properties of its interstellar medium (ISM). The radially averaged [C ii ] 158 μ m and dust continuum emission have similar extensions (up to θ = 2.51 − 0.25 + 0.46 arcsec , corresponding to r = 9.8 − 2.1 + 3.3 kpc , accounting for beam convolution), confirming that J1148+5251 is the quasar with the largest [C ii ] 158 μ m -emitting reservoir known at these epochs. Moreover, if the [C ii ] 158 μ m emission is examined only along its NE–SW axis, a significant excess (>5.8 σ ) of [C ii ] 158 μ m emission (with respect to the dust) is detected. The new wide-bandwidth observations enable us to accurately constrain the continuum emission, and do not statistically require the presence of broad [C ii ] 158 μ m line wings that were reported in previous studies. We also report the first detection more »
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Award ID(s):
Publication Date:
NSF-PAR ID:
10330921
Journal Name:
The Astrophysical Journal
Volume:
927
Issue:
2
Page Range or eLocation-ID:
152
ISSN:
0004-637X
National Science Foundation
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1. Abstract

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3. ABSTRACT

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4. ABSTRACT

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