2005A&A...435...17R


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.14CEST15:57:49

2005A&A...435...17R - Astronomy and Astrophysics, volume 435, 17-27 (2005/5-3)

HE 0141-3932: A bright QSO with an unusual emission line spectrum and associated absorption.

REIMERS D., JANKNECHT E., FECHNER C., AGAFONOVA I.I., LEVSHAKOV S.A. and LOPEZ S.

Abstract (from CDS):

object{HE 0141-3932} (zem=1.80) is a bright blue radio-quite quasar with an unusually weak Lyα emission line. Large redshift differences (Δz=0.05) are observed between high ionization and low ionization emission lines. Absorption systems identified at zabs=1.78, 1.71, and 1.68 show mild oversolar metallicities (Z≃1-2Z) and can be attributed to the associated gas clouds ejected from the circumnuclear region. The joint analysis of the emission and absorption lines leads to the conclusion that this quasar is seen almost pole-on. Its apparent luminosity may be Doppler boosted by ∼10 times. The absorbing gas shows a high abundance of Fe, Mg and Al ([Fe, Mg, Al/C]≃0.15±0.10) along with underabundance of N ([N/C]≤-0.5). This abundance pattern is at variance with current chemical evolution models of QSOs predicting [N/C]>0 and [Fe/C]<0 at Z∼Z.

Abstract Copyright:

Journal keyword(s): cosmology: observations - line: formation - line: profiles - galaxies: abundances - quasars: absorption lines - quasars: individual: HE 0141-3932

Simbad objects: 6

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Number of rows : 6

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 QSO J0143-3917 QSO 01 43 33.6332299840 -39 17 00.065618732     16.28     ~ 24 0
2 HE 0515-4414 QSO 05 17 07.6239672230 -44 10 55.578294294 14.74 15.49 15.16     ~ 102 0
3 QSO J1039-2719 QSO 10 39 21.8516211943 -27 19 16.434979322     17.4     ~ 87 0
4 QSO J1311-0552 QSO 13 11 36.5572054607 -05 52 38.631642807   17.85 17.44     ~ 74 0
5 QSO J1409+2618 QSO 14 09 23.9086975485 +26 18 21.053512073   16.07 15.74     ~ 181 0
6 PHL 1811 Sy1 21 55 01.5123415724 -09 22 24.351917710   13.9 16.8 14.1   ~ 160 1

    Equat.    Gal    SGal    Ecl

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2021.04.14-15:57:49

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