Narrow Absorption Lines Complex. II. Probing the Line-locking Signatures within the Trough-like Broad Absorption Line

Abstract

In this paper, we report the line-locking phenomenon of the blended narrow absorption lines (NALs) within trough-like broad absorption lines (BALs) in quasar SDSS J021740.96--085447.9 (hereafter J0217--0854). Utilizing the two-epoch spectroscopic observations of J0217--0854 from the Sloan Digital Sky Survey, we find that each of its C\,{\footnotesize IV}, Si\,{\footnotesize IV}, N\,{\footnotesize V}, and Ly$\alpha$ BAL troughs actually contain at least seven NAL systems. By splitting these BAL troughs into multiple NAL systems, we find that the velocity separations between the NAL systems are similar to their doublet splittings, with some of them matching perfectly. Cases like J0217--0854, showing line-locking signatures of NALs within BAL troughs, offer a direct observational evidence for the idea that radiative forces play a significant role in driving BAL (at least for Type N BAL) outflows.

arXiv comment5 pages, 2 figures, accepted for publications on ApJ

References in corpus (35)

• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• The Sloan Digital Sky Survey: Technical Summary
• The Baryon Oscillation Spectroscopic Survey of SDSS-III
• The Sloan Digital Sky Survey Quasar Catalog V. Seventh Data Release
• 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
• The Sloan Digital Sky Survey Quasar Catalog: twelfth data release
• A Catalog of Broad Absorption Line Quasars from the Sloan Digital Sky Survey Third Data Release
• A Catalog of Broad Absorption Line Quasars in Sloan Digital Sky Survey Data Release 5
• A strong redshift dependence of the broad absorption line quasar fraction
• Broad Absorption Line Variability on Multi-Year Timescales in a Large Quasar Sample
• A High-Velocity Narrow Absorption Line Outflow in the Quasar J212329.46-005052.9
• HST Observations of the Broad Absorption Line Quasar PG 0946+301
• A Census of Intrinsic Narrow Absorption Lines in the Spectra of Quasars at z=2-4
• Evidence for Photoionization Driven Broad Absorption Line Variability
• Dramatic X-ray Spectral Variability of the Broad Absorption Line Quasar PG2112+059
• Variation of ionizing continuum: the main driver of Broad Absorption Line Variability
• Line-driven radiative outflows in luminous quasars
• Classifying Broad Absorption Line Quasars: Metrics, Issues and a New Catalogue Constructed from SDSS DR5
• A collimated flow driven by radiative pressure from the nucleus of quasar Q~1511+091
• Monitoring the Variability of Intrinsic Absorption Lines in Quasar Spectra
• Echelle Spectroscopy of QSO Absorption Line Systems with Metals in the Direction of HS 1700+6416
• An Intrinsic Absorption Complex Toward RXJ1230.8+0115: Geometry and Photoionization Conditions
• Correlation between the variation of the ionizing continuum and broad absorption lines
• Unusual high-redshift radio BAL quasar 1624+3758
• The associated system of HE2347-4342
• Narrow absorption lines complex I: one form of broad absorption line
• High resolution study of associated C IV absorption systems in NGC 5548
• Evidence for photoionization-driven variability in narrow absorption lines
• The Origins of a Rich Absorption Line Complex in a Quasar at Redshift 3.45
• Saturation Effect on Photoionization-driven Broad Absorption Line Variability
• Spectroscopy along Multiple, Lensed Sightlines through Outflowing Winds in the Quasar SDSS J1029+2623
• A new sample of broad-absorption-line quasars exhibiting the ghost of lyman alpha
• Searching for the signature of radiative line driving: On the absence of Ly-alpha-N V line-locking features in a large sample of BALQSOs
• Multi-Sightline Observation of Narrow Absorption Lines in Lensed Quasar SDSS J1029+2623
• Spectroscopic Observations of the Outflowing Wind in the Lensed Quasar SDSS J1001+5027

Cited by in corpus (7)

• Photoionization calculations of the radiation force due to spectral lines in AGNs
• The Ubiquitous Imprint of Radiative Acceleration in the Mean Absorption Spectrum of Quasar Outflows
• A Kinematic Shift of the C IV Broad Absorption Line in Quasar SDSS J120819.29+035559.4
• Galactic Winds across the Gas-Rich Merger Sequence: I. Highly Ionized N V and O VI Outflows in the QUEST Quasars
• Narrow Absorption Lines Complex. III. Gradual Transition from Type S to Type N Broad Absorption Line
• Search for intrinsic NALs in BAL/mini-BAL quasar spectra
• Correlation between the ionizing continuum and variable C iv broad absorption line in multi-epoch observations of SDSS J141007.74+541203.3