Kinematics of the H α and H β broad-line region in an SDSS sample of type-1 AGNs

被引：9

作者：

Rakic, N. ^{[1
,2
]}

机构：

[1] Univ Banja Luka, Fac Nat Sci & Math, Phys Dept, Mladena Stojanovica 2, Banja Luka 78000, RS, Bosnia & Herceg

[2] Univ Belgrade, Fac Math, Dept Astron, Studentski Trg 16, Belgrade 11000, Serbia

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2022年 / 516卷 / 02期

关键词：

line; profiles-galaxies; active-quasars; emission lines; ACTIVE GALACTIC NUCLEI; BLACK-HOLE MASSES; FE II EMISSION; REVERBERATION; QUASARS; REDSHIFT; GALAXIES; SPECTRA; RATIO; UV;

D O I：

10.1093/mnras/stac2259

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Here, we investigate the kinematics of the part of the broad-line region (BLR) in active galactic nuclei (AGNs) emitting H beta and H alpha emission lines. We explore the widths and asymmetries of the broad H beta and H alpha emission lines in a sample of high-quality (i.e. high signal-to-noise ratio) spectra of type-1 AGN taken from the Data Release 16 of the Sloan Digital Sky Survey in order to explore possible deviation from the gravitationally bound motion. To find only the broad component of H beta and H alpha, we use the fantasy (Fully Automated pythoN Tool for AGN Spectra analYsis) code for the multicomponent modelling of the AGN spectra and for careful extraction of the broad emission-line parameters. We show that based on the broad-line profiles widths and asymmetries, the BLR gas emitting H beta and H alpha lines follows similar kinematics, and seems to be virialized in our sample of type-1 AGN.

引用

页码：1624 / 1634

页数：11

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