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20 April 2024 |
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Probing the interstellar medium and star formation of the Most Luminous Quasar at z=6.3 | | Ran Wang
; Xue-Bing Wu
; Roberto Neri
; Xiaohui Fan
; Fabian Walter
; Chris L. Carilli
; Emmanuel Momjian
; Frank Bertoldi
; Michael A. Strauss
; Qiong Li
; Feige Wang
; Dominik A. Riechers
; Linhua Jiang
; Alain Omont
; Jeff Wagg
; Pierre Cox
; | | Date: |
30 Jun 2016 | | Abstract: | We report new IRAM/PdBI, JCMT/SCUBA-2, and VLA observations of the
ultraluminous quasar SDSSJ010013.02+280225.8 (hereafter, J0100+2802) at z=6.3,
which hosts the most massive supermassive black hole (SMBH) of 1.24x10^10 Msun
known at z>6. We detect the [C II] 158 $mu$m fine structure line and molecular
CO(6-5) line and continuum emission at 353 GHz, 260 GHz, and 3 GHz from this
quasar. The CO(2-1) line and the underlying continuum at 32 GHz are also
marginally detected. The [C II] and CO detections suggest active star formation
and highly excited molecular gas in the quasar host galaxy. The redshift
determined with the [C II] and CO lines shows a velocity offset of ~1000 km/s
from that measured with the quasar Mg II line. The CO (2-1) line luminosity
provides direct constraint on the molecular gas mass which is about
(1.0+/-0.3)x10^10 Msun. We estimate the FIR luminosity to be (3.5+/-0.7)x10^12
Lsun, and the UV-to-FIR spectral energy distribution of J0100+2802 is
consistent with the templates of the local optically luminous quasars. The
derived [C II]-to-FIR luminosity ratio of J0100+2802 is 0.0010+/-0.0002, which
is slightly higher than the values of the most FIR luminous quasars at z~6. We
investigate the constraint on the host galaxy dynamical mass of J0100+2802
based on the [C II] line spectrum. It is likely that this ultraluminous quasar
lies above the local SMBH-galaxy mass relationship, unless we are viewing the
system at a small inclination angle. | | Source: | arXiv, 1606.9634 | | Services: | Forum | Review | PDF | Favorites | |
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