2015A&A...573A..15W


C.D.S. - SIMBAD4 rel 1.7 - 2019.12.15CET21:28:04

2015A&A...573A..15W - Astronomy and Astrophysics, volume 573A, 15-15 (2015/1-1)

Identifying AGN Balmer absorptions and stratified narrow emission-line region kinematics in SDSS J112611.63+425246.4.

WANG J. and XU D.W.

Abstract (from CDS):

Balmer absorption is a rare phenomenon in active galactic nuclei (AGNs). So far, only seven Balmer-absorption AGNs have been reported in the literature. We here report the identification of SDSSJ112611.63+425246 as a new Balmer-absorption AGN through our spectral analysis and study the kinematics of its narrow emission-line region (NLR). We modeled the continuum by a linear combination of a starlight component, a power law from the central AGN, and the emission from the FeII complex. After subtracting the modeled continuum, each emission or absorption line profile is a sum of multi-Gaussian functions. All the line shifts were determined with respect to the modeled starlight component. By using the host starlight as a reference for the local system, both Hα and Hβ show AGN absorptions with a blueshift of ∼300km/s. We identify a strong anticorrelation between the inferred velocity shifts and the ionization potential for various narrow emission lines, which suggests a stratified NLR kinematics. A de-accelerated outflow is implied for the inner NLR gas, an accelerated inflow for the outer NLR gas. This complicated NLR kinematics additionally implies that AGN narrow emission lines, even for the low-ionized lines, might not be a reliable substitute for the velocity of the local system.

Abstract Copyright:

Journal keyword(s): galaxies: active - galaxies: peculiar - galaxies: individual: SDSS J112611.63+425246.4

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 - 2020
#notes
1 [VV2006] J083942.1+380525 QSO 08 39 42.1179401396 +38 05 26.457297018   20.01 19.43     ~ 25 0
2 QSO J1028+4500 QSO 10 28 39.1117145693 +45 00 09.446991804   17.55 17.40     ~ 27 0
3 2MASX J11261161+4252470 Sy1 11 26 11.6323884194 +42 52 46.515561961   18.61 18.13     ~ 27 0
4 LBQS 1206+1052 QSO 12 09 24.0820384235 +10 36 12.051243395   17.11 16.89     ~ 39 0
5 NGC 4151 Sy1 12 10 32.5771747733 +39 24 21.057727323   12.18 11.48     ~ 3318 2
6 2MASS J12594276+1213126 Sy1 12 59 42.8028816071 +12 13 12.554974378   19.76 19.18     ~ 32 0
7 [VV2006] J172341.0+555340 QSO 17 23 41.0832194376 +55 53 40.529486149   20.52 19.31     ~ 25 0
8 2MASS J22202458+0109313 Sy1 22 20 24.5886373747 +01 09 31.273051869   17.33 16.95     ~ 28 0

    Equat.    Gal    SGal    Ecl

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2019.12.15-21:28:04

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