The signature of high velocity gas in the spectra of NGC 4151

Abstract

The multiwavelength emission spectrum and associated velocity field of the Seyfert prototype NGC 4151 is modeled. HST data has impressively revealed the existence of a large range of velocities (100 - 1500 \kms) dominating the emitting clouds in the extended emission line region of the galaxy. Following this observational result, a revision of the photoionization modeling approach applied to NGC 4151 is presented. It is concluded that a mixture of radiation dominated clouds and shock dominated clouds are required to explain the multiwavelength line and continuum spectra of the galaxy.

arXiv comment16 pages, LaTeX class for Astronomy and Astrophysics (including 3 Tables) + 8 PostScript figures. To appear in "Astronomy and Astrophysics"

References in corpus (17)

• ASCA Observations of Seyfert 1 galaxies: III. The Evidence for Absorption & Emission due to Photoionized Gas
• Chandra Observations of the X-ray Narrow-Line Region in NGC 4151
• A Kinematic Model for the Narrow-Line Region in NGC 4151
• Infrared spectroscopy of NGC4151: Probing the obscured ionizing AGN continuum
• The Resolved Narrow Line Region in NGC4151
• STIS Longslit Spectroscopy of the Narrow-Line Region of NGC 4151. II. Physical Conditions along Position Angle 221 Degress
• A grid of composite models for the simulation of the emission-line spectra from the NLR of active galaxies
• STIS Longslit Spectroscopy Of The Narrow Line Region Of NGC 4151. I. Kinematics and Emission Line Ratios
• GHRS Monitoring of the Outflowing Material in NGC 4151
• The Narrow Line Region of NGC 4151: a Turbulent Cauldron
• HST FOC spectroscopy of the NLR of NGC 4151. I. Gas kinematics
• Gas and Dust Emission from the Nuclear Region of the Circinus Galaxy
• Doppler tomography of intermediate polar spin cycles
• High Velocity Line Emission in the NLR of NGC 4151
• The optical-ultraviolet continuum of Seyfert 2 galaxies
• A Multi-Cloud Warm-Absorber Model for NGC 4051
• A two-phase model for the Narrow Line Region of NGC 4151

Cited by in corpus (9)

• Resolved Mid-IR Emission in the Narrow Line Region of NGC 4151
• Obscured Activity: AGN, Quasars, Starbursts and ULIGs observed by the Infrared Space Observatory
• The Infrared Continuum of Active Galaxies
• Dust-to-gas ratios in the starburst regions of luminous infrared galaxies
• The 3-5 micron Spectrum of NGC 1068 at High Angular Resolution: Distribution of Emission and Absorption Features across the Nuclear Continuum Source
• The Narrow Line Region of Ark 564
• Spectra from the shocked nebulae revealing turbulence near the Galactic Centre
• The LLAGN in the centre of the Galaxy
• The Infrared-X-ray continuum correlation in Active Galactic Nuclei