2017ApJ...838..135Y


Query : 2017ApJ...838..135Y

2017ApJ...838..135Y - Astrophys. J., 838, 135-135 (2017/April-1)

The physical constraints on a new LoBAL QSO at z = 4.82.

YI W., GREEN R., BAI J.-M., WANG T., GRIER C.J., TRUMP J.R., BRANDT W.N., ZUO W., YANG J., WANG F., YANG C., WU X.-B., ZHOU H., FAN X., JIANG L., YANG Q., VARRICATT W., KERR T., MILNE P., BENIGNI S., WANG J.-G., ZHANG J., WANG F., WANG C.-J., XIN Y.-X., FAN Y.-F., CHANG L., ZHANG X. and LUN B.-L.

Abstract (from CDS):

Very few low-ionization broad absorption line (LoBAL) QSOs have been found at high redshifts, to date. One high-redshift LoBAL QSO, J0122+1216, was recently discovered by the Lijiang 2.4 m Telescope, with an initial redshift determination of 4.76. Aiming to investigate its physical properties, we carried out follow-up observations in the optical and near-IR spectroscopy. Near-IR spectra from UKIRT and P200 confirm that it is a LoBAL, with a new redshift determination of 4.82 ± 0.01 based on the Mg II emission-line. The new Mg II redshift determination reveals strong blueshifts and asymmetry of the high-ionization emission lines. We estimate a black hole mass of ∼2.3 x 109 M and Eddington ratio of ∼1.0 according to the empirical Mg II-based single-epoch relation and bolometric correction factor. It is possible that strong outflows are the result of an extreme quasar environment driven by the high Eddington ratio. A lower limit on the outflowing kinetic power (>0.9% LEdd) is derived from both emission and absorption lines, indicating that these outflows play a significant role in the feedback process that regulates the growth of its black hole, as well as host galaxy evolution.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): galaxies: high-redshift - quasars: absorption lines - quasars: general - quasars: individual: J0122+1216 - quasars: individual: J0122+1216

Simbad objects: 8

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Number of rows : 8
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9993 1
2 QSO J0122+1216 QSO 01 22 47.3379614803 +12 16 24.036225159           ~ 5 0
3 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 15675 1
4 QSO J0756+4104 QSO 07 56 18.139 +41 04 08.61   25.29 23.32     ~ 46 0
5 2MASS J10071367+2853486 QSO 10 07 13.6734508347 +28 53 48.406266762   20.70 19.72     ~ 19 0
6 SDSS J104433.04-012502.0 QSO 10 44 33.044 -01 25 02.07     21.81     ~ 158 1
7 SDSS J104845.05+463718.3 QSO 10 48 45.058 +46 37 18.38   25.87 24.76     ~ 118 0
8 QSO J1605-0112 QSO 16 05 01.2139885707 -01 12 20.698849701   26.55 24.30     ~ 37 0

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2021.12.06-18:07:37

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