The Ionized Gas and Nuclear Environment in NGC 3783 III. Detection of a Decreasing Radial Velocity in an Intrinsic UV Absorber

Abstract

We report an intrinsic absorber with decreasing outflow velocity in the Seyfert 1 galaxy NGC 3783. This is the first detection of a change in radial velocity in an outflow associated with a Seyfert galaxy. These results are based on measurements from 18 observations with the Space Telescope Imaging Spectrograph aboard the Hubble Space Telescope, obtained between 2000 February and 2002 January. In two intervals separated by ~13 and 9 months, the absorption lines in the kinematic component with highest outflow velocity exhibited mean redward velocity shifts of ~35 and 55 km/s, respectively. The rate of velocity decrease was 2.2 +/- 0.6 times more rapid in the second interval. No variations in absorption velocities were detected in the other kinematic components. We explore potential interpretations of the observed velocity shifts: radial deceleration of the UV absorber due to a change in either the speed or direction of motion of the outflow, and the evolution of a continuous flow across our line of sight to the emission source.

arXiv comment17 pages, 5 figures, accepted for publication in the Astrophysical Journal

References in corpus (17)

• Dynamics of line-driven disk winds in Active Galactic Nuclei
• An X-ray spectral study of 24 type-1 AGN
• The Ionized Gas and Nuclear Environment in NGC 3783. I. Time-Averaged 900 ks Chandra Grating Spectroscopy
• Intrinsic Absorption Lines in Seyfert 1 Galaxies. I. Ultraviolet Spectra from the Hubble Space Telescope
• Resolved Spectroscopy of the Narrow-Line Region in NGC 1068: Kinematics of the Ionized Gas
• The Mass of the Central Black Hole in the Seyfert Galaxy NGC 3783
• A Kinematic Model for the Narrow-Line Region in NGC 4151
• Spatial Resolution of High-Velocity Filaments in the Narrow-Line Region of NGC 1068: Associated Absorbers Caught in Emission?
• Resolved Spectra of the Narrow-Line Region in NGC 1068. III. Physical Conditions in the Emission-Line Gas
• The Ionized Gas and Nuclear Environment in NGC 3783 II. Averaged HST/STIS and FUSE Spectra
• Dynamics of Warm-Absorbing Gas in Seyfert Galaxies: NGC 5548
• STIS Echelle Observations of the Seyfert Galaxy NGC 4151: Physical Conditions in the Ultraviolet Absorbers
• Kinematics of the Narrow-Line Region in the Seyfert 2 Galaxy Mrk 3
• Variable UV Absorption in the Seyfert 1.5 Galaxy NGC 3516: The Case for Associated UV and X-ray Absorption
• GHRS Monitoring of the Outflowing Material in NGC 4151
• STIS Echelle Observations of the Intrinsic UV Absorption in the Seyfert 1 Galaxy NGC 3783
• STIS Echelle Observations of NGC 4151: Variable Ionization of the Intrinsic UV Absorbers

Cited by in corpus (40)

• The nature and origin of Seyfert warm absorbers
• The Compact, Conical, Accretion-Disk Warm Absorber of the Seyfert 1 Galaxy NGC 4051 and its Implications for IGM-Galaxy Feedback Processes
• The Ionized Gas and Nuclear Environment in NGC 3783. IV. Variability and Modeling of the 900 ks CHANDRA Spectrum
• Simultaneous X-ray and UV spectroscopy of the Seyfert 1 galaxy NGC 5548.II. Physical conditions in the X-ray absorber
• The Ionized Gas and Nuclear Environment in NGC 3783 V. Variability and Modeling of the Intrinsic Ultraviolet Absorption
• Dynamical and Spectral Modeling of the Ionized Gas and Nuclear Environment in NGC 3783
• Discovery of Probable Relativistic Fe Emission and Absorption in the Cloverleaf Quasar H 1413+117
• X-rays from the location of the Bactrian Transient ASASSN-15lh
• CIV Broad Absorption Line Acceleration in Sloan Digital Sky Survey Quasars
• Acceleration and Substructure Constraints in a Quasar Outflow
• Intrinsic Absorption in the Spectrum of NGC 7469: Simultaneous Chandra, FUSE, and STIS Observations
• Intrinsic Absorption in the Spectrum of Mrk 279: Simultaneous Chandra, FUSE, and STIS Observations
• Physical Conditions in Ultra Fast Outflows in AGN
• Spectral Variability of Quasars in the Sloan Digital Sky Survey. II: The C IV Line
• Intrinsic Absorption Properties in Active Galaxies Observed with the Far Ultraviolet Spectroscopic Explorer
• Variation in the Scattering Shroud Surrounding Markarian 231
• High-Resolution Absorption Spectroscopy of Multi-phase, High-Metallicity Gas Associated with the Luminous Quasar HE 0226-4110
• HST/COS observations of the newly discovered obscuring outflow in NGC 3783
• The Two-Phase, Two-Velocity Ionized Absorber in the Seyfert 1 Galaxy NGC 5548
• Chandra High-Resolution X-ray Spectroscopy of the Fe K Line in the Seyfert 1 Galaxy NGC 3783
• A Census of Quasar-Intrinsic Absorption in the Hubble Space Telescope Archive: Systems from High Resolution Echelle Spectra
• New constraints on the nature and origin of the Leading Arm of the Magellanic Stream
• Deceleration of CIV and SiIV broad absorption lines in X-ray bright quasar SDSS-J092345+512710
• Long-term X-ray stability and UV variability of the ionized absorption in NGC 3783
• A Kinematic Shift of the C IV Broad Absorption Line in Quasar SDSS J120819.29+035559.4
• Correlated time variability of multi-component high velocity outflows in J162122.54+075808.4
• Properties of X-ray selected Broad Absorption Line Quasars
• Far Ultraviolet Spectroscopic Explorer Spectroscopy of Absorption and Emission Lines from the Narrow-Line Seyfert 1 Galaxy NGC 4051
• Multiwavelength Monitoring of the Dwarf Seyfert 1 Galaxy NGC 4395. II. X-ray and Ultraviolet Continuum Variability
• The SDSS-V Black Hole Mapper Reverberation Mapping Project: CIV BAL Acceleration in the Quasar SBS 1408+544
• Time-dependent photoionization spectroscopy of the Seyfert galaxy NGC 3783
• Response of the warm absorber cloud to a variable nuclear flux in active galactic nuclei
• Direct Measurement of Quasar Outflow Wind Acceleration
• Density calculations of NGC 3783 warm absorbers using a time-dependent photoionization model
• Joint Fit of Warm Absorbers in COS & HETG Spectra of NGC 3783
• Evolution of the Outflows in NGC 3516
• Variable Intrinsic Absorption in Mrk 279
• Modeling Warm Absorption in HST/COS Spectrum of Mrk 290 with XSTAR
• Active Galaxies in the UV
• Delving into the depths of NGC 3783 with XRISM: V. Broad-band modeling of ionized outflows