SIMBAD references

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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2021.10.18-15:51:41

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