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Title: Exploring the diversity of Type 1 active galactic nuclei identified in SDSS-IV/SPIDERS

Journal Article · · Monthly Notices of the Royal Astronomical Society
 [1]; ORCiD logo [1];  [1];  [1];  [1];  [1];  [2];  [3];  [1];  [4];  [1]
  1. Max-Planck-Institut für extraterrestrische Physik, Gießenbachstraße 1, D-85748 Garching, Germany
  2. School of Physics and Astronomy, Tel-Aviv University, Tel Aviv 69978, Israel
  3. Instituto de Física de Cantabria (CSIC-Universidad de Cantabria), E-39005 Santander, Spain
  4. Department of Astronomy and Astrophysics, The Pennsylvania State University, University Park, PA 16802, USA, Institute for Gravitation and the Cosmos, The Pennsylvania State University, University Park, PA 16802, USA

ABSTRACT We present a statistical analysis of the optical properties of an X-ray-selected Type 1 active galactic nucleus (AGN) sample, using high signal-to-noise ratio (S/N>20) spectra of the counterparts of the ROSAT/2RXS sources in the footprint of the SDSS-IV/SPIDERS (Spectroscopic IDentification of eROSITA Sources) programme. The final sample contains 2100 sources. It significantly extends the redshift and luminosity ranges (z ∼ 0.01–0.80 and $$L_{\rm 0.1\!-\!2.4 \, keV} \sim \rm 2.0 \times 10^{41}\!-\!1.0 \times 10^{46} \, \, erg \, s^{-1}$$) used so far in this kind of analysis. By means of a principal component analysis, we derive eigenvector (EV) 1 and 2 in an eleven-dimensional optical and X-ray parameter space, which are consistent with previous results. The validity of the correlations of the Eddington ratio L/LEdd with EV1 and the black hole mass with EV2 is strongly confirmed. These results imply that L/LEdd and black hole mass are related to the diversity of the optical properties of Type 1 AGNs. Investigating the relation of the width and asymmetry of H β and the relative strength of the iron emission $$r_{\rm Fe\, \small{II}}$$, we show that our analysis supports the presence of a distinct kinematic region: the very broad line region. Furthermore, comparing sources with a red-asymmetric broad H β emission line to sources for which it is blue asymmetric, we find an intriguing difference in the correlation of the $$\rm Fe\, \small{II}$$ and the continuum emission strengths. We show that this contrasting behaviour is consistent with a flattened, stratified model of the broad-line region, in which the $$\rm Fe\, \small{II}$$-emitting region is shielded from the central source.

Sponsoring Organization:
USDOE
OSTI ID:
1595149
Journal Information:
Monthly Notices of the Royal Astronomical Society, Journal Name: Monthly Notices of the Royal Astronomical Society Journal Issue: 3 Vol. 492; ISSN 0035-8711
Publisher:
Oxford University PressCopyright Statement
Country of Publication:
United Kingdom
Language:
English

References (120)

THE SLOAN DIGITAL SKY SURVEY REVERBERATION MAPPING PROJECT: NO EVIDENCE FOR EVOLUTION IN THE ${{M}_{\bullet }}-{{\sigma }_{*}}$ RELATION TO $z\sim 1$ journal May 2015
The emission-line properties of low-redshift quasi-stellar objects journal May 1992
A Long-Term Study of Broad Emission Line Profile Variability in NGC 5548 journal July 1996
An accretion event in the Seyfert galaxy NGC 5548 journal November 1986
Eddington Accretion and QSO Emission Lines at z ~2 journal July 2003
Quasars in the 4D eigenvector 1 context: a stroll down memory lane journal October 2015
Doubled-peaked emission lines in active galactic nuclei journal January 1994
C iv λ1549 as an Eigenvector 1 Parameter for Active Galactic Nuclei journal September 2007
What broad emission lines tell us about how active galactic nuclei work journal July 2009
AGN Broad Line Region Variability in the Context of Eigenvector 1: Case of NGC 5548 journal January 2018
The Fe II problem in NLS1s journal September 2000
The Case for Two Quasar Populations journal January 2011
The Intermediate-Line Region in Active Galactic Nuclei journal October 2016
Searching for the physical drivers of eigenvector 1: influence of black hole mass and Eddington ratio journal November 2003
The Fundamental Plane of the Broad-Line Region in Active Galactic Nuclei journal February 2016
Partial dust obscuration in active galactic nuclei as a cause of broad-line profile and lag variability, and apparent accretion disc inhomogeneities journal April 2018
Average Quasar Spectra in the Context of Eigenvector 1 journal February 2002
Relativistic beaming and quasar emission lines journal March 1986
Determining Central Black Hole Masses in Distant Active Galaxies and Quasars. II. Improved Optical and UV Scaling Relationships journal April 2006
Dissecting the Quasar main Sequence: Insight from host Galaxy Properties journal April 2015
Spectral Energy Distributions and Multiwavelength Selection of Type 1 Quasars
  • Richards, Gordon T.; Lacy, Mark; Storrie‐Lombardi, Lisa J.
  • The Astrophysical Journal Supplement Series, Vol. 166, Issue 2 https://doi.org/10.1086/506525
journal October 2006
QSO Broad Emission Line Asymmetries: Evidence of Gravitational Redshift? journal July 1995
Quasar Massive Ionized Outflows Traced by CIV λ1549 and [OIII]λλ4959,5007 journal September 2017
Determining Central Black Hole Masses in Distant Active Galaxies journal June 2002
Predicted Fe ii Emission‐Line Strengths from Active Galactic Nuclei journal March 2003
Unified Schemes for Radio-Loud Active Galactic Nuclei journal June 1995
Broad emission features in QSOs and active galactic nuclei. II - New observations and theory of Fe II and H I emission journal January 1985
Cosmic Evolution of Mass Accretion Rate and Metallicity in Active Galactic Nuclei journal January 2007
A Complete Sample of Soft X-Ray-selected AGNs. II. Statistical Analysis journal April 2004
The 2.5 m Telescope of the Sloan Digital Sky Survey journal April 2006
AGN Host Galaxies at z  ~ 0.4-1.3: Bulge-dominated and Lacking Merger-AGN Connection journal June 2005
Testing for multimodality journal December 1994
QSFit: automatic analysis of optical AGN spectra journal September 2017
Principal Component Analysis of the Spectral Energy Distribution and Emission line Properties of red 2mass Active Galactic Nuclei journal February 2009
The Physical Driver of the Optical Eigenvector 1 in Quasar Main Sequence journal November 2017
SPIDERS: selection of spectroscopic targets using AGN candidates detected in all-sky X-ray surveys journal April 2017
Infrared Fe ii Emission in Narrow‐Line Seyfert 1 Galaxies journal January 2002
The Profiles of H beta and [O iii] lambda 5007 in Radio-loud Quasars journal January 1996
AEGIS-X: THE CHANDRA DEEP SURVEY OF THE EXTENDED GROTH STRIP journal December 2008
An Optical Spectroscopic Atlas of Low‐Redshift Active Galactic Nuclei journal April 2003
Failed Radiatively Accelerated Dusty Outflow Model of the Broad Line Region in Active Galactic Nuclei. I. Analytical Solution journal September 2017
What does CIV λ 1549 tell us about the physical driver of the Eigenvector quasar sequence? journal December 2017
The Relationship between Luminosity and Broad‐Line Region Size in Active Galactic Nuclei journal August 2005
Spatially resolved rotation of the broad-line region of a quasar at sub-parsec scale journal January 2018
The Origin of Fe ii Emission in Active Galactic Nuclei journal November 2004
Double-Peaked Profiles: Ubiquitous Signatures of Disks in the Broad Emission Lines of Active Galactic Nuclei journal January 2017
Radio loudness along the quasar main sequence journal September 2019
Sloan Digital Sky Survey IV: Mapping the Milky Way, Nearby Galaxies, and the Distant Universe journal June 2017
Contribution of the disk emission to the broad emission lines in AGNs: Two-component model journal August 2004
The Optical and Ultraviolet Emission-Line Properties of Bright Quasars with Detailed Spectral Energy Distributions journal August 2012
Highly accreting quasars: The SDSS low-redshift catalog journal December 2018
Ionized gas in active galactic nuclei journal August 2008
Broad Emission-Line Shifts in Quasars: An Orientation Measure for Radio-Quiet Quasars? journal July 2002
Eigenvector 1: An Optimal Correlation Space for Active Galactic Nuclei journal June 2000
Small dense broad-line regions in active nuclei journal December 1989
The Baldwin Effect and Black Hole Accretion: A Spectral Principal Component Analysis of a Complete Quasar Sample journal March 2003
Low-Ionization Outflows in high Eddington Ratio Quasars journal February 2013
On the Unification of Active Galactic Nuclei journal February 2012
The AGN Black Hole Mass Database journal January 2015
Extending the Eigenvector 1 space to the optical variability of quasars journal April 2009
Searching for the Physical Drivers of the Eigenvector 1 Correlation Space journal September 2001
Dust inflated accretion disc as the origin of the broad line region in active galactic nuclei journal November 2017
The lick agn Monitoring Project: Broad-Line Region Radii and Black hole Masses from Reverberation Mapping of hβ journal October 2009
Orientation dependency of broad-line widths in quasars and consequences for black hole mass estimation journal May 2006
Unified Models for Active Galactic Nuclei and Quasars journal September 1993
Discovery of extreme [O iii] λ5007 Å outflows in high-redshift red quasars journal March 2016
Reverberation mapping of active galactic nuclei journal March 1993
Phenomenology of Broad Emission Lines in Active Galactic Nuclei journal September 2000
Active galactic nuclei: what’s in a name? journal August 2017
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 journal April 2018
Detailed characterization of Hβ emission line profile in low- z SDSS quasars journal April 2010
VLT/ISAAC spectra of the H β region in intermediate-redshift quasars : III. H journal January 2009
Finding counterparts for all-sky X-ray surveys with Nway: a Bayesian algorithm for cross-matching multiple catalogues journal October 2017
SDSS-IV/SPIDERS: A catalogue of X-ray selected AGN properties: Spectral properties and black hole mass estimates for SPIDERS SDSS DR14 type 1 AGN journal May 2019
Locally Optimally Emitting Clouds and the Origin of Quasar Emission Lines journal December 1995
Comparing Single-Epoch Virial Black hole mass Estimators for Luminous Quasars journal June 2012
The origin of the broad line region in active galactic nuclei journal December 2010
Luminosity Indicators in the Spectra of Quasi-Stellar Objects journal June 1977
Measuring the black hole masses of high-redshift quasars journal November 2002
Some Aspects of Measurement Error in Linear Regression of Astronomical Data journal August 2007
Obscured Active Galactic Nuclei journal September 2018
THE Fe II EMISSION IN ACTIVE GALACTIC NUCLEI: EXCITATION MECHANISMS AND LOCATION OF THE EMITTING REGION journal March 2016
Reverberation mapping of the emission line regions of Seyfert galaxies and quasars journal April 1982
Revisiting the Unified Model of Active Galactic Nuclei journal August 2015
Kinematic Linkage between the Broad- and Narrow-Line–emitting Gas in Active Galactic Nuclei journal September 2002
The diversity of quasars unified by accretion and orientation journal September 2014
The Quasar Main Sequence Explained by the Combination of Eddington Ratio, Metallicity, and Orientation journal September 2019
ERQs are the BOSS of quasar samples: the highest velocity [O iii] quasar outflows journal July 2019
A Main Sequence for Quasars journal March 2018
L[CLC]y[/CLC]α Fluorescent Excitation of F[CLC]e[/CLC] [CSC]ii[/CSC] in Active Galactic Nuclei journal June 1998
Orientation and quasar black hole mass estimation journal October 2015
Black Hole Mass Estimates from Reverberation Mapping and from Spatially Resolved Kinematics journal November 2000
Emission-line profiles and kinematics of the narrow-line region in Seyfert and radio galaxies journal July 1981
Second ROSAT all-sky survey (2RXS) source catalogue journal March 2016
Black hole mass Estimates Based on c iv are Consistent with Those Based on the Balmer Lines journal November 2011
A serendipitous XMM survey of the SDSS: the evolution of the colour-magnitude diagram of X-ray AGN from z= 0.8 to 0.1: The XMM/SDSS survey journal May 2011
Black hole growth to z = 2 - I. Improved virial methods for measuring MBH and L/LEdd journal December 2012
A Census of Ionized Gas Outflows in Type 1 AGNs: Gas Outflows in AGNs. V. journal September 2018
Kinematic evidence for a relativistic Keplerian disk - ARP 102B journal April 1989
THE LICK AGN MONITORING PROJECT 2011: Fe II REVERBERATION FROM THE OUTER BROAD-LINE REGION journal May 2013
On the Time Dependence of Emission-Line Strengths from a Photoionized Nebula journal January 1972
Continuum and Emission‐Line Strength Relations for a Large Active Galactic Nuclei Sample journal December 2002
Mode testing, critical bandwidth and excess mass journal August 2018
Is MgII λ 2800 a reliable virial broadening estimator for quasars? journal July 2013
Determination of confidence limits for experiments with low numbers of counts journal June 1991
Modeling of the Quasar Main Sequence in the Optical Plane journal October 2018
Relative quasar luminosities determined from emission line strengths journal June 1978
Balmer lines emission region in NGC 3516: Kinematical and physical properties journal July 2002
Principal component analysis: a review and recent developments
  • Jolliffe, Ian T.; Cadima, Jorge
  • Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 374, Issue 2065 https://doi.org/10.1098/rsta.2015.0202
journal April 2016
Can we improve C iv-based single-epoch black hole mass estimations? journal May 2018
Long-Term Profile Variability in Active Galactic Nucleus with Double-Peaked Balmer Emission Lines journal March 2010
Partial Correlation and Conditional Correlation as Measures of Conditional Independence journal December 2004
The evolution of active galactic nuclei across cosmic time: what is downsizing?: The evolution of AGNs across cosmic time journal December 2011
Broad-line region physical conditions along the quasar eigenvector 1 sequence: Quasar BLR along the E1 sequence journal September 2010
Completion of a Survey and Detailed Study of Double‐peaked Emission Lines in Radio‐loud Active Galactic Nuclei journal December 2003
Study of Outflows in Luminous Quasars at Redshift ∼0.4–0.8 journal January 2018
The intermediate line region of QSOs journal July 1994
Structure of line-emitting accretion disks in active galactic nuclei - ARP 102B journal September 1989
The first XMM-Newton slew survey catalogue: XMMSL1 journal January 2008
The Multi-Object, Fiber-Fed Spectrographs for the Sloan Digital sky Survey and the Baryon Oscillation Spectroscopic Survey journal July 2013

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