The extended narrow line region in MKN 79. II. Modelling.

Details The extended narrow line region in MKN 79. II. Modelling. The extended narrow line region in MKN 79. II. Modelling.

May 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997a%26a...321..397n&link_type=abstract

Astronomy and Astrophysics, v.321, p.397-408

Astronomy and Astrophysics

Astrophysics

5

Galaxies: Active, Galaxies: Individual: Mkn 79, Galaxies: Seyfert

Scientific paper

We present photoionization modelling of the Extended Narrow Line Region (ENLR) in Mkn 79 based on long-slit spectra presented in our previous paper (Nazarova et al. 1996). The ENLR has been modelled with two gas components: a system of high density clouds embedded in a low density gas envelope. The ENLR line fluxes have been calculated allowing for attenuation of the nuclear ionizing continuum as a function of distance from the centre. The diffuse continuum emission from the low density gas is also included as an important secondary source of ionization. We show that this multi-component gas model can successfully reproduce the observed line fluxes and line ratios in the ENLR of Mkn 79 assuming a central source luminosity of 6.6x10^52^photons/s, consistent with the dereddened nuclear luminosity. The predicted reflected continuum from the ENLR gas is also in agreement with the observed extended blue continuum emission.

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