Energy Inputs to the Narrow Line Regions of Active Galaxies

Details Energy Inputs to the Narrow Line Regions of Active Galaxies Energy Inputs to the Narrow Line Regions of Active Galaxies

Jul 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995hst..prop.6006w&link_type=abstract

HST Proposal ID #6006

Physics

Hst Proposal Id #6006 Agn

Scientific paper

A program of spectroscopy of the narrow line regions {NLR's} of two Seyfert galaxies is proposed. We have obtained HST images in HAlpha, OIIILambda5007 and adjacent continua for both galaxies. We find that the brightest regions of line emission are extranuclear and associated with radio jets or lobes. A number of lines of evidence suggest that sources of heating additional to photoionization are operating in the NLR. Optical and ultraviolet spectra will be obtained of the bright, line-emitting regions associated with the radio components with a view to probing contributions of shock waves or relativistic particles to the heating of the gas. Unlike most previous work with nuclear apertures {which sum over several decades in radius and cloud properties}, our off- nuclear spectra provide a significantly improved set of gas diagnostics. In particular, we obtain unambiguous temperature estimates {through OIIILambda4363/5007 in a low density regime}, and UV line strengths predicted to be significantly enhanced in recent models of high velocity shocks {e.g. CIV Lambda1548}. The data will then be analysed with photoionization and shock codes to derive the physical state of the gas, especially mass, kinetic energy, ionization state and abundances. These results will, in turn, be compared with models in which an outwardly moving radio jet or plasmoid drives radiative shocks into an ambient interstellar medium.

Affiliated with

Also associated with

No associations

Rating

Energy Inputs to the Narrow Line Regions of Active Galaxies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Energy Inputs to the Narrow Line Regions of Active Galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Energy Inputs to the Narrow Line Regions of Active Galaxies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1171680