Tracing the outflow kinematics in Type 2 Active Galactic Nuclei

Abstract

We have used the sample of 577 active galactic nuclei Type 1.8-2 spectra (z < 0.25), taken from Sloan Digital Sky Survey, to trace the influence of the outflow kinematics to the profiles of different emission lines (Hbeta, [O III], Halpha, [N II], [S II]). All considered lines were fitted with two Gaussian components: one which fits the core of the line, and another which fits the wings. We gave the procedure for decomposition of Halpha+[N II] wavelength band, for the spectra where these lines overlap. The influence of the gravitational/non-gravitational kinematics to the line components is investigated by comparing the dispersions of the line components with stellar velocity dispersion. We found that wing components of all considered emission lines have pure non-gravitational kinematics, the core components are consistent with gravitational kinematics for the Halpha, [N II] and [S II] lines, while in the [O III] there is evidence for contribution from non-gravitational kinematics. We adopted the wing components as proxy of the outflow contribution and we investigated the outflow kinematics by analysing the correlations between widths and between shifts of the wing components of different lines. We found the strong correlations between shifts and between wing component widths of all considered lines, with exception of the Hbeta wing component width. These correlations indicate that outflow dynamics systemically affects all emission lines in spectrum. However, it reflects with different strength in their profiles, which is observed as different widths of the wing components. The strongest outflow signature is observed in the [O III] lines, which have the broadest wing components, weaker in Halpha and [N II], and the weakest in [S II]. These results imply that considered lines arise in different parts of an outflowing region.

arXiv commentAccepted for publication in Astronomy and Astrophysics, 18 pages, 15 figures, 2 tables

References in corpus (65)

• Measuring Reddening with SDSS Stellar Spectra and Recalibrating SFD
• Energy input from quasars regulates the growth and activity of black holes and their host galaxies
• Observational Evidence of AGN Feedback
• Parametric Recovery of Line-of-Sight Velocity Distributions from Absorption-Line Spectra of Galaxies via Penalized Likelihood
• The Baryon Oscillation Spectroscopic Survey of SDSS-III
• Sloan Digital Sky Survey IV: Mapping the Milky Way, Nearby Galaxies, and the Distant Universe
• Galactic Winds
• The Multi-Object, Fiber-Fed Spectrographs for SDSS and the Baryon Oscillation Spectroscopic Survey
• Estimating Black Hole Masses in Active Galaxies Using the Halpha Emission Line
• The SAURON project - V. Integral-field emission-line kinematics of 48 elliptical and lenticular galaxies
• The Fourteenth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the extended Baryon Oscillation Spectroscopic Survey and from the second phase of the Apache Point Observatory Galactic Evolution Experiment
• Spectral Classification and Redshift Measurement for the SDSS-III Baryon Oscillation Spectroscopic Survey
• Kiloparsec-scale outflows are prevalent among luminous AGN: outflows and feedback in the context of the overall AGN population
• A Search for "Dwarf" Seyfert Nuclei. IV. Nuclei with Broad H-alpha Emission
• Wind from the black-hole accretion disk driving a molecular outflow in an active galaxy
• AGN outflows and feedback twenty years on
• Quasar feedback and the origin of radio emission in radio-quiet quasars
• Observations of Feedback from Radio-Quiet Quasars - II. Kinematics of Ionized Gas Nebulae
• Evidence for powerful AGN winds at high redshift: Dynamics of galactic outflows in radio galaxies during the "Quasar Era"
• A Comparison of Stellar and Gaseous Kinematics in the Nuclei of Active Galaxies
• Narrow-line region gas kinematics of 24,264 optically-selected AGN: the radio connection
• The Mass Function of Active Black Holes in the Local Universe
• Spectral Classification of Quasars in the Sloan Digital Sky Survey: Eigenspectra; Redshift and Luminosity Effects
• Relativistic jet feedback III: feedback on gas disks
• Stellar velocity dispersions and emission line properties of SDSS-III/BOSS galaxies
• Discovery of extreme [OIII]5007A outflows in high-redshift red quasars
• Analysis of optical Fe II emission in a sample of AGN spectra
• Distributions of Galaxy Spectral Types in the Sloan Digital Sky Survey
• The Prevalence of Gas Outflows in Type 2 AGNs
• Radiative Transfer and Acceleration in Magnetocentrifugal Winds
• Exploring the Low-Mass End of The M-Sigma Relation with Active Galaxies
• Prevalence of radio jets associated with galactic outflows and feedback from quasars
• Ionized outflows in local luminous AGN: what are the real densities and outflow rates?
• MAGNUM survey: Compact jets causing large turmoil in galaxies -- Enhanced line widths perpendicular to radio jets as tracers of jet-ISM interaction
• Spectral Decomposition of Broad-Line AGNs and Host Galaxies
• The flux ratio of the [OIII] 5007,4959 lines in AGN: Comparison with theoretical calculations
• Radial Velocity Offsets Due to Mass Outflows and Extinction in Active Galactic Nuclei
• A New Catalogue of Type 1 AGN and its Implication on the AGN Unified Model
• Contribution of the Disk Emission to the Broad Emission Lines in AGNs: Two-component model
• AGN feedback: galactic-scale outflows driven by radiation pressure on dust
• Unravelling the complex structure of AGN-driven outflows: I. Kinematics and sizes
• Powering galactic super-winds with small-scale AGN winds
• A comprehensive and uniform sample of broad-line active galactic nuclei from the SDSS DR7
• The SINFONI survey of powerful radio galaxies at z~2: Jet-driven AGN feedback during the Quasar Era
• The Prevalence of Gas Outflows in Type 2 AGNs. II. 3D Biconical Outflow Models
• Delayed or no feedback? - Gas outflows in Type 2 AGNs. III
• The Limited Impact of Outflows: Integral-Field Spectroscopy of 20 Local AGNs
• A census of ionized gas outflows in type 1 AGNs: gas outflows in AGNs. V
• A Multi-Wavelength Study of the Nature of Type 1.8/1.9 Seyfert Galaxies
• Bayesian AGN Decomposition Analysis for SDSS Spectra: A Correlation Analysis of [OIII]$\lambda 5007$ Outflow Kinematics with AGN and Host Galaxy Properties
• The Quasar Feedback Survey: Discovering hidden Radio-AGN and their connection to the host galaxy ionised gas
• Unravelling the complex structure of AGN-driven outflows III. The outflow size-luminosity relation
• Physical Properties of the Narrow-Line Region of Low-Mass Active Galaxies
• Unravelling the complex structure of AGN-driven outflows: II. Photoionization and energetics
• Gemini GMOS/IFU spectroscopy of NGC 1569 - II: Mapping the roots of the galactic outflow
• Extreme ionised outflows are more common when the radio emission is compact in AGN host galaxies
• From Nuclear to Circumgalactic: Zooming in on AGN-Driven Outflows at z~2.2 with SINFONI
• Extreme Gaseous Outflows in Radio-Loud Narrow-Line Seyfert 1 Galaxies
• A Study of Outflows in Luminous Quasars at Redshift $\sim 0.4-0.8$
• Outflow kinematics manifested by the H-alpha line: gas outflows in Type 2 AGNs. IV
• A systematic search for hidden type 1 AGNs: gas kinematics and scaling relations
• Misclassified type 1 AGNs in the local universe
• On the Effects of Dissipative Turbulence on the Narrow Emission-Line Ratios in Seyfert Galaxies
• Unraveling the complex structure of AGN-driven outflows: IV. Comparing AGNs with and without strong outflows
• The gas kinematics in Mrk 533 nucleus and circumnuclear region: a gaseous outflow

Cited by in corpus (11)

• The AGNIFS survey: spatially resolved observations of hot molecular and ionised outflows in nearby active galaxies
• The flux ratio of the [N II]$\lambda \lambda$ 6548, 6583 Å lines in sample of Active Galactic Nuclei Type 2
• Fantastic Fits with fantasy of Active Galactic Nuclei Spectra -- Exploring the Fe II emission near the H$\alpha$ line
• Kinematics of the H$\alpha$ and H$\beta$ broad line region in an SDSS sample of type 1 AGNs
• The SDSS-V Black Hole Mapper Reverberation Mapping Project: Unusual Broad-Line Variability in a Luminous Quasar
• The ALPINE-CRISTAL-JWST Survey: Revealing Less Massive Black Holes in High-Redshift Galaxies
• SDSS J222428.53+261423.2: unique emission lines properties unveil a sub-kiloparsec dual AGN candidate
• Optical Continuum Reverberation Mapping of a Candidate IMBH in a Nearby Seyfert 1 Galaxy
• Velocity offset between emission and absorption lines might be an effective indicator of dual core system
• The [OIII] profiles of far-infrared active and non-active optically-selected green valley galaxies
• ALMA uncovers optically thin and multi-component CO gas in the outflowing circumnuclear disk of NGC1068