Average UV Quasar Spectra in the Context of Eigenvector 1: A Baldwin Effect Governed by Eddington Ratio?

Abstract

We present composite UV spectra for low redshift Type 1 AGN binned to exploit the information content of the Eigenvector 1 (E1) parameter space. Composite spectra allow a decomposition of the CIV1549 line profile - one of the strongest high-ionization lines. The simplest CIV decomposition into narrow (NLR), broad (BLR) and very broad (VBLR) components suggests that different components have an analog in Hb with two major exceptions. VBLR emission is seen only in population B (FWHM(Hb)>4000 km/s) sources. A blue shifted/asymmetric BLR component is seen only in pop. A (FWHM(Hb)<4000 km/s) HIL such as CIV. The blueshifted component is thought to arise in a wind or outflow. Our analysis suggests that such a wind can only be produced in pop. A (almost all radio-quiet) sources where the accretion rate is relatively high. Comparison between broad UV lines in radio-loud (RL) and radio-quiet (RQ) sources shows few significant differences. Clear evidence is found for a narrow CIV component in most radio-loud sources. We find also some indirect indications that the black hole (BH) spin, rather than BH mass or accretion rate is a key trigger in determining whether an object will be RL or RQ. We find a ten-fold decrease in EW CIV with Eddington ratio (decreasing from ~1 to \~0.01) while NV shows no change. These trends suggest a luminosity-independent "Baldwin effect" where the physical driver may be the Eddington ratio.

39 pages, 6 figures. To appear in ApJ

References in corpus (47)

• Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
• Reverberation Measurements for 17 Quasars and the Size-Mass-Luminosity Relations in Active Galactic Nuclei
• Composite Quasar Spectra From the Sloan Digital Sky Survey
• AGN Black Hole Masses and Bolometric Luminosities
• Black Hole Mass and Eddington Ratio as Drivers for the Observable Properties of Radio-Loud and Radio-Quiet QSOs
• Determining Central Black Hole Masses in Distant Active Galaxies
• Elemental Abundances in QSOs: Star Formation and Galactic Nuclear Evolution at High Redshifts
• Broad Emission Line Shifts in Quasars: An Orientation Measure for Radio-Quiet Quasars?
• Black Hole Spin Evolution
• Eigenvector 1: An Optimal Correlation Space for Active Galactic Nuclei
• Narrow Line Seyfert 1 Galaxies and the Evolution of Galaxies & Active Galaxies
• A spectrophotometric atlas of Narrow-Line Seyfert 1 galaxies
• Broad Emission Line Regions in AGN: the Link with the Accretion Power
• What the Optical Recombination Lines Can Tell Us About the Broad Line Regions of Active Galactic Nuclei
• An Atlas of Computed Equivalent Widths of Quasar Broad Emission Lines
• Radio Loud and Radio Quiet Active Galactic Nuclei
• Continuum and Emission Line Strength Relations for a large Active Galactic Nuclei Sample
• Searching for the Physical Drivers of the Eigenvector 1 Correlation Space
• The Connection Between Radio Quiet AGN and the High/Soft State of X-Ray Binaries
• The Sloan Digital Sky Survey Quasar Catalog I. Early Data Release
• HST STIS Ultraviolet Spectral Evidence of Outflow in Extreme Narrow-line Seyfert 1 Galaxies: II. Modeling and Interpretation
• Average Quasar Spectra in the Context of Eigenvector 1
• The Host Galaxies of Narrow-Line Seyfert 1s: Evidence for Bar-Driven Fueling
• Searching For the Physical Drivers of Eigenvector 1: Influence of Black Hole Mass and Eddington Ratio
• Kinematic Linkage Between the Broad and Narrow Line Emitting Gas in AGN
• Dynamics of Broad-Emission Line Region in NGC 5548: Hydromagnetic Wind Model versus Observations
• Active Galactic Nuclei Emission-Line Properties Versus Eddington Ratio
• The correlation of line strength with luminosity and redshift from composite QSO spectra
• On the origin of the C IV Baldwin effect in AGN
• The Baldwin Effect and Black Hole Accretion: A Spectral Principal Component Analysis of a Complete QSO Sample
• A Relation Between Supermassive Black Hole Mass and Quasar Metallicity?
• The Demise of the Classical BLR in the Luminous Quasar PG1416-129
• Quasar Evolution and the Baldwin Effect in the Large Bright Quasar Survey
• Size-Mass-luminosity relations in AGN and the role of the accretion disc
• Radio Loud AGN in the Context of the Eigenvector 1 Parameter Space
• Ultraviolet and optical properties of Narrow-Line Seyfert 1 galaxies
• Jet-cloud interations and the brightening of the narrow line region in Seyfert galaxies
• Is There a Disc in the Superluminal Quasars?
• Emission-Line Properties of z > 4 Quasars
• The Peculiar Balmer Line Profiles of OQ 208
• The Intermediate Line Region in AGN: a region "praeter necessitatem"?
• Host Galaxies of low z Radio-loud Quasars: A search of HST archives
• Masses, Accretion Rates and Inclinations of AGNs
• Searching for the Physical Drivers of Eigenvector-1: From Quasars to Nano-Quasars
• On the Baldwin Effect in Active Galactic Nuclei: I. The Continuum-Spectrum - Mass Relationship
• A Search for Nitrogen Enriched Quasars in the Sloan Digital Sky Survey Early Data Release
• The role of advection in the accreting corona model for active galactic nuclei and Galactic black holes

Cited by in corpus (87)

• A Catalog of Quasar Properties from SDSS DR7
• Determining Central Black Hole Masses in Distant Active Galaxies and Quasars. II. Improved Optical and UV Scaling Relationships
• Biases in Virial Black Hole Masses: An SDSS Perspective
• Unification of Luminous Type 1 Quasars through CIV Emission
• Radio-loud Narrow-Line Type 1 Quasars
• Comparing Single-Epoch Virial Black Hole Mass Estimators for Luminous Quasars
• CIV 1549 as an Eigenvector 1 Parameter for Active Galactic Nuclei
• X-ray Insights into the Nature of PHL 1811 Analogs and Weak Emission-Line Quasars: Unification with a Geometrically Thick Accretion Disk?
• High-Redshift SDSS Quasars with Weak Emission Lines
• Dust inflated accretion disc as the origin of the Broad Line Region in Active Galactic Nuclei
• Detailed Characterization of H_beta emission line profile in low z SDSS quasars
• Microlensing of the broad line region in 17 lensed quasars
• Broad Line Region Physical Conditions along the Quasar Eigenvector 1 Sequence
• VLT/ISAAC Spectra of the Hbeta Region in Intermediate-Redshift Quasars III. Hbeta Broad Line Profile Analysis and Inferences about BLR Structure
• Highly Accreting Quasars: Sample Definition and Possible Cosmological Implications
• BLR Physical Conditions in Extreme Population A Quasars: a Method to Estimate Central Black Hole Mass at High Redshift
• What controls the Fe II strength in active galactic nuclei?
• VLT/ISAAC Spectra of the H-beta Region in Intermediate Redshift Quasars
• Modelling type 1 quasar colours in the era of Rubin and Euclid
• Estimating Black Hole Masses in Quasars Using Broad Optical and UV Emission Lines
• Weak Emission Line Quasars in the Context of a Modified Baldwin Effect
• What does Civλ1549 tell us about the physical driver of the Eigenvector Quasar Sequence?
• Eddington ratio governs the equivalent width of MgII emission line in active galactic nuclei
• Star Formation in Luminous Quasars at 2<z<3
• The role of black hole mass in quasar radio activity
• Coexistence of Gravitationally Bound and Radiation Driven CIV Emission Line Regions in Active Galactic Nuclei
• Low-Ionization Outflows in High Eddington Ratio Quasars
• Zooming into the broad line region of the gravitationally lensed quasar Q2237+0305 = the Einstein Cross: III. Determination of the size and structure of the CIV and CIII] emitting regions using microlensing
• Rehabilitating CIV-based black hole mass estimates in quasars
• Testing AGN outflow and accretion models with CIV and HeII emission line demographics in z=2 quasars
• The narrow-line region of narrow-line and broad-line type 1 AGN I. A zone of avoidance in density
• The Baldwin effect in the narrow emission lines of AGNs
• Investigation on Young radio AGNs based on SDSS spectroscopy
• Time-delay measurement of MgII broad line response for the highly-accreting quasar HE 0413-4031: Implications for the MgII-based radius-luminosity relation
• The orientation dependence of quasar single-epoch black hole mass scaling relationships
• The phylogeny of quasars and the ontogeny of their central black holes
• Probing the Origins of the CIV and Fe Kalpha Baldwin Effect
• GTC Spectra of z ~ 2.3 Quasars: Comparison with Local Luminosity Analogues
• A large sample of Kohonen-selected SDSS quasars with weak emission lines: selection effects and statistical properties
• The most powerful quasar outflows as revealed by the Civ λ1549 resonance line
• Black hole mass estimates in quasars - A comparative analysis of high- and low-ionization lines
• The Sloan Digital Sky Survey Reverberation Mapping Project: the CIV Blueshift, Its Variability, and Its Dependence Upon Quasar Properties
• CIV and CIII] reverberation mapping of the luminous quasar PG 1247+267
• Extreme quasars at high redshift
• Lens-Aided Multi-Angle Spectroscopy (LAMAS) Reveals Small-Scale Outflow Structure in Quasars
• Blue outliers among intermediate redshift quasars
• CIV Emission and the Ultraviolet through X-ray Spectral Energy Distribution of Radio-Quiet Quasars
• Accretion Properties of A Sample of Hard X-ray (<60keV) Selected Seyfert 1 Galaxies
• Spectral Evolution in High Redshift Quasars from the Final BOSS Sample
• The Origin and Evolution of \civ Baldwin Effect in QSOs from the Sloan Digital Sky Survey
• The Redshifted Excess in Quasar C IV Broad Emission Lines
• High-ionization emission line ratios from quasar broad line regions: metallicity or density?
• Quasars and their emission lines as cosmological probes
• Studying X-ray reprocessing and continuum variability in quasars: PG 1211+143
• Comparing Hbeta Line Profiles in the 4D Eigenvector 1 Context
• Characterizing Quasar CIV Emission-line Measurements from Time-resolved Spectroscopy
• The intrinsic Baldwin effect in broad Balmer lines of six long-term monitored AGNs
• The radio loud narrow-line quasar SDSSJ172206.03+565451.6
• A new method to obtain the Broad Line Region size of high redshift quasars
• The environment of weak emission-line quasars
• High Metal Content of Highly Accreting Quasars: Analysis of an Extended Sample
• High-redshift quasars along the Main Sequence
• The underlying driver for the \civ Baldwin effect in QSOs with $0<z<5$
• Chemical abundances along the quasar main sequence
• The intermediate-ionization lines as virial broadening estimators for Population A quasars
• Quasar optical variability: searching for interband time delays
• The non-constant slope of the CIV Baldwin effect in NGC 4151
• Baldwin Effect and Additional BLR Component in AGN with Superluminal Jets
• UV spectral diagnostics for low redshift quasars: estimating physical conditions and radius of the Broad Line Region
• On the emission lines in active galactic nuclei with relativistic jets
• CIV emission line properties and uncertainties in black hole mass estimates of z ~ 3.5 quasars
• [OIII] emission in z=2 quasars with and without Broad Absorption Lines
• Statistical analysis of AlIII 1860 and CIII] 1909 emission lines as virial black hole mass estimators in quasars
• VLT/SINFONI study of black hole growth in high redshift radio-loud quasars from the CARLA survey
• X-ray Clusters of Galaxies as Cosmological Tools
• Astrophysics in 2005
• HE0359-3959: an extremely radiating quasar
• Tracing Quasar Narrow-Line Regions Across Redshift: A Library of High S/N Optical Spectra
• Exploring the links between quasar winds and radio emission along the Main Sequence at high redshift
• Balmer line shifts in quasars
• The CaFe Project: Optical FeII and Near-Infrared Ca II triplet emission in active galaxies. II. The driver(s) of the Ca II and Fe II and its potential use as a chemical clock
• Spectroscopy of bright quasars: emission lines and internal extinction
• Past, present and Future of the Scaling Relations of Galaxies and Active Galactic Nuclei
• Quasar Mass Functions Across Cosmic Time
• Quasar emission lines as virial luminosity estimators
• Exploring Low Luminosity Quasar Diversity at z ~ 2.5 with the Gran Telescopio Canarias
• The Relationship Between Emission Line and Continuum Luminosity and the Baldwin Effect in Blazars. I. The Case of the Mg II λ2798 Å Emission Line