2001A&A...367...51Y


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.24CEST10:37:06

2001A&A...367...51Y - Astronomy and Astrophysics, volume 367, 51-58 (2001/2-3)

Emission-line properties of MG 2016+112: A luminous obscured quasar at high redshift.

YAMADA T., YAMAZAKI S., HATTORI M., SOUCAIL G. and KNEIB J.-P.

Abstract (from CDS):

We present new high signal-to-noise ratio spectra of the components B and C of the gravitational lensing system MG 2016+112. We show that image C displays strong emission lines of Lyα, NV, CIV, HeII, and CIII] redshifted to z=3.27, similar to images A and B. We examine the emission-line flux ratios in order to put constraints on the lens models as well as to investigate the intrinsic nature of MG 2016+112. The observed line ratios of B and C are consistent with those expected in the simple photo-ionization models for narrow-line region of active galactic nuclei (AGN) except for the enhanced NV lines. The line ratios difference of components B and C can be interpreted as a difference in ionization parameters. This result is consistent with lens model prediction that C is a fold image of a slightly outer part of the nucleus. MG 2016+112 is known to be very unique among the high-redshift AGN; it is neither an ordinary broad-line quasar nor a powerful radio galaxy as indicated by the width and flux ratio of the emission lines. Together with other observed properties discussed in literature, we argue that MG 2016+112 may be an obscured luminous radio-quiet quasar.

Abstract Copyright:

Journal keyword(s): galaxies: active - galaxies: quasars: emission lines - galaxies: quasars: individual: MG 2016+112

CDS comments: MG 2016+112 = MITG J2019+1127 = [LBH86] 2016+112

Simbad objects: 10

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Number of rows : 10

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NAME SMM J02399-0136 G 02 39 51.87 -01 35 58.8       21.20   ~ 178 2
2 [VV96] J102434.5+470911 Sy1 10 24 34.5 +47 09 11     20.5     ~ 475 0
3 QSO B2016+112B QSO 20 19 18.0 +11 27 13     22.5     ~ 32 0
4 [LSS84] 2016+112 C LeI 20 19 18.036 +11 27 11.44           ~ 17 0
5 [LSS84] 2016+112 D G 20 19 18.07 +11 27 13.2           ~ 34 1
6 QSO B2016+112 QSO 20 19 18.2 +11 27 14     22.5     ~ 192 1
7 GD 248 WD* 23 26 06.5870632822 +16 00 19.282796891 14.431 15.206 15.112 15.034 14.977 DA5 75 0
8 [LSS84] 2016+112 C2 LeI ~ ~           ~ 8 0
9 [LSS84] 2016+112 C1 LeI ~ ~           ~ 4 0
10 [LSS84] 2016+112 B1 LeI ~ ~           ~ 8 0

    Equat.    Gal    SGal    Ecl

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2020.10.24-10:37:06

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