2024NatAs...8.1054B

Query : 2024NatAs...8.1054B

2024NatAs...8.1054B - Nature Astronomy, 8, 1054-1065 (2024/August-0)

A mature quasar at cosmic dawn revealed by JWST rest-frame infrared spectroscopy.

BOSMAN S.E.I., ALVAREZ-MARQUEZ J., COLINA L., WALTER F., ALONSO-HERRERO A., WARD M.J., OSTLIN G., GREVE T.R., WRIGHT G., BIK A., BOOGAARD L., CAPUTI K., COSTANTIN L., ECKART A., GARCIA-MARIN M., GILLMAN S., HJORTH J., IANI E., ILBERT O., JERMANN I., LABIANO A., LANGEROODI D., PEISSKER F., RINALDI P., TOPINKA M., VAN DER WERF P., GUDEL M., HENNING T., LAGAGE P.-O., RAY T.P., VAN DISHOECK E.F. and VANDENBUSSCHE B.

Abstract (from CDS):

The rapid assembly of the first supermassive black holes is an enduring mystery. Until now, it was not known whether quasar 'feeding' structures (the 'hot torus') could assemble as fast as the smaller-scale quasar structures. We present JWST/MRS (rest-frame infrared) spectroscopic observations of the quasar J1120+0641 at z = 7.0848 (well within the epoch of reionization). The hot torus dust was clearly detected at λ_rest ≃ 1.3 μm, with a black-body temperature of $Tdust=1,413.5-7.4+5.7{T}_{{{{\rm{dust}}}}}=\text{1,413.5}_{-7.4}^{+5.7}$ K, slightly elevated compared to similarly luminous quasars at lower redshifts. Importantly, the supermassive black hole mass of J1120+0641 based on the Hα line (accessible only with JWST), M_BH = 1.52 ± 0.17 × 10⁹ M_⊙, is in good agreement with previous ground-based rest-frame ultraviolet Mg ii measurements. Comparing the ratios of the Hα, Paα and Paβ emission lines to predictions from a simple one-phase Cloudy model, we find that they are consistent with originating from a common broad-line region with physical parameters that are consistent with lower-redshift quasars. Together, this implies that J1120+0641's accretion structures must have assembled very quickly, as they appear fully 'mature' less than 760 Myr after the Big Bang.

Abstract Copyright: 2024 The Author(s), under exclusive licence to Springer Nature Limited

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Number of rows : 1

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2026	#notes
1	QSO J1120+0641	QSO	11 20 01.463	+06 41 23.79						~	262	0

Query : 2024NatAs...8.1054B

Basic data :

QSO J1120+0641 -- Quasar

QSO (2011Natur,QSO,...), MIR (WISE)

11 20 01.463 +06 41 23.79 (mm) [ 20 30 90 ] C 2020ApJ...904..130V

11 17 26.280 +06 57 49.77 [ 20 30 90 ]

252.047510 +60.188058 [ 20 30 90 ]

V(km/s) 290758 [150] / z(spectroscopic) 7.0851 [0.0005] / cz 2124060 [150] (NIR) C 2021ApJ...923..262Y

J (AB) 20.36 [0.05] C 2016ApJS..227...11B

H (AB) 20.156 [0.0636] C 2020MNRAS.494..789R

K (AB) 19.613 [0.0526] C 2020MNRAS.494..789R

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QSO J1120+0641 ULAS J112001.48+064124.3 WISE J112001.47+064124.2 [YWF2021] J112001.48+064124.3

References (262 between 1850 and 2026) (Total 262)
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Data at NED - NASA/IPAC Extragalactic Database : QSO J1120+0641

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ULAS J112001.48+064124.3 WISE J112001.47+064124.2

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