AGN orientation through the spectroscopic correlations and model of dusty cone shell
arXiv:2110.06687 · doi:10.1093/mnras/stab2926
Abstract
The differences between Narrow Line Seyfert 1 galaxies (NLS1s) and Broad Line AGNs (BLAGNs) are not completely understood; it is thought that they may have different inclinations and/or physical characteristics. The FWHM(Hb)-luminosities correlations are found for NLS1s and their origin is the matter of debate. Here we investigated the spectroscopic parameters and their correlations considering a dusty, cone model of AGN. We apply a simple conical dust distribution (spreading out of broad line region, BLR), assuming that the observed surface of the model is in a good correlation with MIR emission. The dusty cone model in combination with a BLR provides the possibility to estimate luminosity dependence on the cone inclination. The FWHM(Hb)-luminosities correlations obtained from model in comparison with observational data show similarities which may indicate the influence of AGN inclination and structure to this correlation. An alternative explanation for FWHM(Hb)-luminosities correlations is the selection effect by the black hole mass. These FWHM(Hb)-luminosities correlations may be related to the starburst in AGNs, as well. The distinction between spectral properties of the NLS1s and BLAGNs could be caused by multiple effects: beside physical differencies between NLS1s and BLAGNs (NLS1s have lighter black hole mass than BLAGNs), inclination of the conical AGN geometry may have important role as well, where NLS1s may be seen in lower inclination angles.
arXiv commentAccepted to MNRAS
References in corpus (63)
- Unified Schemes for Radio-Loud Active Galactic Nuclei
- The Infrared Spectrograph on the Spitzer Space Telescope
- Some Aspects of Measurement Error in Linear Regression of Astronomical Data
- Astrophysical Implications of the Binary Black-Hole Merger GW150914
- What Drives the Growth of Black Holes?
- Molecular line emission in NGC1068 imaged with ALMA. I An AGN-driven outflow in the dense molecular gas
- Systematic Effects in Measurement of Black Hole Masses by Emission-Line Reverberation of Active Galactic Nuclei: Eddington Ratio and Inclination
- PAHs as a tracer of star formation?
- The Third Swift Burst Alert Telescope Gamma-Ray Burst Catalog
- A Comprehensive Study of 2 000 Narrow Line Seyfert 1 Galaxies from the Sloan Digital Sky Survey: I. The Sample
- CASSIS: The Cornell Atlas of Spitzer/IRS Sources
- A spectrophotometric atlas of Narrow-Line Seyfert 1 galaxies
- Spatially resolved rotation of the broad-line region of a quasar at sub-parsec scale
- First X-ray-Based Statistical Tests for Clumpy-Torus Models: Eclipse Events from 230 Years of Monitoring of Seyfert AGN
- Analysis of optical Fe II emission in a sample of AGN spectra
- A Catalog of Narrow Line Seyfert 1 Galaxies from the Sloan Digital Sky Survey Data Release 12
- Average Quasar Spectra in the Context of Eigenvector 1
- Enhanced Star Formation in Narrow Line Seyfert 1 AGN revealed by Spitzer
- Redefining the torus: A unifying view of AGN in the infrared and sub-mm
- Mid-infrared emission of galactic nuclei: TIMMI2 versus ISO observations and models
- Evolution of Active Galaxies: Black-hole Mass - Bulge relations for Narrow Line Objects
- Are the black hole masses in Narrow Line Seyfert 1 galaxies actually small?
- High-Velocity Bipolar Molecular Emission from an AGN Torus
- The Host Galaxies of Narrow-Line Seyfert 1s: Nuclear Dust Morphology and Starburst Rings
- Narrow-line Seyfert 1 Galaxies and the M_BH - sigma Relation
- CASSIS: The Cornell Atlas of Spitzer/Infrared Spectrograph Sources. II. High-resolution observations
- Spectral Optical Monitoring of the Narrow Line Seyfert 1 galaxy Ark 564
- Orientation dependency of broad-line widths in quasars and consequences for black-hole mass estimation
- Dissecting the active galactic nucleus in Circinus -- II. A thin dusty disc and a polar outflow on parsec scales
- The Prevalence of Gas Outflows in Type 2 AGNs. II. 3D Biconical Outflow Models
- Resolving the nuclear obscuring disk in the Compton-thick Seyfert galaxy NGC5643 with ALMA
- New evidence for the ubiquity of prominent polar dust emission in AGN on tens of parsec scales
- A Combined Optical and X-ray Study of Unobscured Type 1 AGN. II. Relation Between X-ray Emission and Optical Spectra
- Radio-loud Narrow Line Seyfert 1 under a different perspective: a revised black hole mass estimate from optical spectropolarimetry
- The High-Ionization Nuclear Emission-Line Region of Seyfert Galaxies
- Parent population of flat-spectrum radio-loud narrow-line Seyfert 1 galaxies
- Optical Variability of Narrow and Broad line Seyfert 1 galaxies
- Spectropolarimetry of Seyfert 1 galaxies with equatorial scattering: Black hole masses and Broad Line Region characteristics
- Modeling optical and UV polarization of AGNs III. From uniform-density to clumpy regions
- The Galaxy Activity, Torus and Outflow Survey (GATOS): II. Torus and polar dust emission in nearby Seyfert galaxies
- Optical Variability of Narrow-Line Seyfert 1 Galaxies
- CAIXA: a Catalogue of AGN In the XMM-Newton Archive II. Multiwavelength correlations
- Resolving the AGN and host emission in the mid-infrared using a model-independent spectral decomposition
- NLS1 galaxies and estimation of their central black hole masses from the X-ray excess variance method
- Timescale of variation and the size of the accretion disc in active galactic nuclei
- How does the Polar Dust affect the Correlation between Dust Covering Factor and Eddington Ratio in Type 1 Quasars Selected from the Sloan Digital Sky Survey Data Release 16?
- On the size-luminosity relation of AGN dust tori in the mid-infrared
- Large-scale environments of narrow-line Seyfert 1 galaxies
- Statistical multifrequency study of narrow-line Seyfert 1 galaxies
- The Peculiar Balmer Line Profiles of OQ 208
- Star Formation Rates for Starburst Galaxies from Ultraviolet, Infrared, and Radio Luminosities
- SDSS J211852.96-073227.5: a new γ-ray flaring narrow-line Seyfert 1 galaxy
- Effects of Inclination on Measuring Velocity Dispersion and Implications for Black Holes
- New Insights Into The Narrow-Line Seyfert 1 Phenomenon
- Comparing Hbeta Line Profiles in the 4D Eigenvector 1 Context
- The LEECH Exoplanet Imaging Survey: Orbit and Component Masses of the Intermediate Age, Late-Type Binary NO UMa
- Optical emission line properties of a sample of the broad-line AGNs: the Baldwin effect and eigenvector 1
- Spectral nuclear properties of NLS1 galaxies
- Connection Between Mid-Infrared Emission Properties and Narrow Line Region Outflows in Type 1 Active Galactic Nuclei
- Properties of the narrow line Seyfert 1 galaxies revisited
- Variability of NGC 4051 and the Nature of Narrow-Line Seyfert 1 Galaxies
- The optical vs. mid-infrared spectral properties of 82 Type 1 AGNs: coevolution of AGN and starburst
- Narrow vs. Broad line Seyfert 1 galaxies: X-ray, optical and mid-infrared AGN characteristics