On the Origin of Intrinsic Narrow Absorption Lines in z<1 QSOs

Abstract

We present a statistical analysis of the associated, high ionization narrow absorption line (NAL) systems in a sample of 59 QSOs defined from the HST QSO Absorption Line Key Project. We have compiled the QSO luminosities at 2500 A, 5 GHz, and 2 keV, spectral indices at 2500 A and 5 GHz, the H-beta emission line FWHM, the CIV emission line FWHM, and the radio core fraction. We find 17 associated NALs toward 15 QSOs, of which ~10 are statistically expected to be intrinsic. From a multivariate clustering analysis, the QSOs seem to group together based primarily on radio luminosity, followed by radio spectral index, CIV emission line FWHM, and soft X-ray luminosity. Radio-loud QSOs which have compact radio morphologies, flat radio spectra, and mediocre CIV FWHM (<6000 km/s) do not have detectable associated NALs, down to REW(CIV)=0.35 A. We find that BALQSOs have an enhanced probability of hosting detectable NAL gas and that the velocities of associated NALs are peaked around the emission redshifts, rather than the systemic redshifts of the QSOs. There is only one strong NAL [REW(CIV)>1.5 A] in our low redshift sample which implies evolution in the number of strong NALs with redshift. We interpret these results in the context of an accretion-disk model. In this framework, we suggest that the observational clues result from differences in orientation and wind properties, the latter presumably associated with the QSO radio properties. (abridged)

Accepted for publication in ApJ, 20 pages text, 13 figures, 6 tables, 43 pages total, uses AASTeX 5.0, also available at http://www.astro.psu.edu/users/ganguly/ under Related Publications

References in corpus (8)

• Dynamics of line-driven disk winds in Active Galactic Nuclei
• The FIRST Bright Quasar Survey. II. 60 Nights and 1200 Spectra Later
• On the Nature of Soft X-ray Weak Quasi-Stellar Objects
• Intrinsic Absorption Lines in Seyfert 1 Galaxies. I. Ultraviolet Spectra from the Hubble Space Telescope
• Low and High Ionization Absorption Properties of Mg II Absorption-Selected Galaxies at Intermediate Redshifts. II. Taxonomy, Kinematics, and Galaxies
• Exploratory ASCA Observations of Broad Absorption Line Quasi-Stellar Objects
• Heavy X-ray Absorption in Soft X-ray Weak Active Galactic Nuclei
• Determining the Fraction of Intrinsic CIV Absorption in Quasi-Stellar Object Absorption Line Systems

Cited by in corpus (66)

• A Catalog of Broad Absorption Line Quasars from the Sloan Digital Sky Survey Third Data Release
• CAIXA: a Catalogue of AGN In the XMM-Newton Archive I. Spectral analysis
• On the Fraction of Quasars with Outflows
• A High-Velocity Narrow Absorption Line Outflow in the Quasar J212329.46-005052.9
• A Census of Intrinsic Narrow Absorption Lines in the Spectra of Quasars at z=2-4
• The Ionization and Metallicity of the Intervening O VI Absorber at z = 0.1212 in the Spectrum of H1821+643
• Narrow associated QSO absorbers: clustering, outflows and the line-of-sight proximity effect
• Variability in quasar broad absorption line outflows II. Multi-epoch monitoring of SiIV and CIV BAL variability
• Extreme-Velocity Quasar Outflows and the Role of X-ray Shielding
• The Quasar-frame Velocity Distribution of Narrow CIV Absorbers
• Occurrence and Global Properties of Narrow CIV lambda 1549 Absorption Lines in Moderate-Redshift Quasars
• The nature of proximate damped Lyman alpha systems
• The Extreme High-Velocity Outflow in Quasar PG0935+417
• Variable X-ray absorption in the mini-BAL QSO PG 1126-041
• Variability of Narrow, Associated Absorption Lines in Moderate- and Low-Redshift Quasars
• On the structure and energetics of quasar broad absorption-line outflows
• X-Ray Insights Into the Physics of Mini-BAL Quasar Outflows
• Associated absorption in radio quasars. I. C IV absorption and the growth of radio sources
• Broad Absorption Line Quasars with Redshifted Troughs: High-Velocity Infall or Rotationally Dominated Outflows?
• XMM-Newton and Chandra Spectroscopy of the Variable High-Energy Absorption of PG 1115+080: Refined Outflow Constraints
• Average Properties of a Large Sample of z_abs ~ z_em associated Mg II Absorption Line Systems
• Nature and statistical properties of quasar associated absorption systems in the XQ-100 Legacy Survey
• Multiwavelength campaign on Mrk 509. VI. HST/COS observations of the far-ultraviolet spectrum
• HS 1700+6416: the first high redshift non lensed NAL-QSO showing variable high velocity outflows
• Monitoring the Variability of Intrinsic Absorption Lines in Quasar Spectra
• HST/COS observations of a new population of associated QSO absorbers
• An Intrinsic Absorption Complex Toward RXJ1230.8+0115: Geometry and Photoionization Conditions
• High-Resolution Absorption Spectroscopy of Multi-phase, High-Metallicity Gas Associated with the Luminous Quasar HE 0226-4110
• Emergence of a Quasar Outflow
• Narrow absorption lines complex I: one form of broad absorption line
• Exploratory Study of the X-Ray Properties of Quasars With Intrinsic Narrow Absorption Lines
• HST and Ground-Based Spectroscopy of Quasar Outflows: From Mini-BALs to BALs
• Narrow absorption lines with two observations of Sloan Digital Sky Survey
• The WISSH quasars project X. Discovery of a multi-component and highly-variable UV ultra-fast outflow in a z=3.6 quasar
• A Census of Quasar-Intrinsic Absorption in the Hubble Space Telescope Archive: Systems from High Resolution Echelle Spectra
• Metallicity and Far-Infrared Luminosity of High Redshift Quasars
• The Physical Conditions of the Intrinsic N V Narrow Absorption Line Systems of Three Quasars
• A Study of Quasar Proximity in O VI Absorbers at z=2-3
• Evidence for photoionization-driven variability in narrow absorption lines
• Variable UV Absorption in the Spectrum of MRC 2251-178
• Do broad absorption line quasars live in different environments from ordinary quasars?
• The Origins of a Rich Absorption Line Complex in a Quasar at Redshift 3.45
• Resolving the Clumpy Structure of the Outflow Winds in the Gravitationally Lensed Quasar SDSS J1029+2623
• Deceleration of CIV and SiIV broad absorption lines in X-ray bright quasar SDSS-J092345+512710
• High-Resolution Ultraviolet Spectra of the Dwarf Seyfert 1 Galaxy NGC 4395: Evidence for Intrinsic Absorption
• High Resolution Spectroscopy of X-ray Quasars: Searching for the X-ray Absorption from the Warm-Hot Intergalactic Medium
• Hunting for Metals Using XQ-100 Legacy Survey Composite Spectra
• Narrow, Intrinsic CIV Absorption in Quasars as it Relates to Outflows, Orientation, and Radio Properties
• Galactic Winds across the Gas-Rich Merger Sequence: I. Highly Ionized N V and O VI Outflows in the QUEST Quasars
• Magnetohydrodynamic Winds Driven by the Line Force from the Standard Thin Disk around Supermassive Black Holes. I. The Case of Weak Magnetic Field
• Search for intrinsic NALs in BAL/mini-BAL quasar spectra
• The Absorbers Toward CSO 118: Superclustering at {z~3}, or an Intrinsic Absorption Complex?
• Multi-Sightline Observation of Narrow Absorption Lines in Lensed Quasar SDSS J1029+2623
• A Catalog of High-Velocity CIV Mini-BALs in the VLT-UVES and Keck-HIRES Archives
• Hubble Space Telescope Ultraviolet Spectroscopy of Fourteen Low-Redshift Quasars
• The dust, nebular emission and dependence on QSO radio properties of the associated Mg II absorption line systems
• Optical Variability Properties of Mini-BAL and NAL Quasars
• X-ray Insights into the Nature of Quasars with Redshifted Broad Absorption Lines
• Spectroscopic Observations of the Outflowing Wind in the Lensed Quasar SDSS J1001+5027
• MCMC-based Voigt Profile fitting to a Mini-BAL System in the Quasar UM675
• Unveiling the X-ray/UV properties of disk winds in active galactic nuclei using broad and mini-broad absorption line quasars
• A Novel Test of Quasar Orientation
• Multiwavelength Monitoring of the Dwarf Seyfert 1 Galaxy NGC 4395. IV. The Variable UV Absorption Lines
• Multi-phase investigation of outflows in the circumgalactic and interstellar media of luminous quasars at z~5
• A Comparison of Properties of Quasars with and without Rapid Broad Absorption Line Variability
• Matter Outflows from AGN: A Unifying Model