Composite Models (Shock and Photoionisation) for the Interpretation of AGN Spectra

Details Composite Models (Shock and Photoionisation) for the Interpretation of AGN Spectra Composite Models (Shock and Photoionisation) for the Interpretation of AGN Spectra

Nov 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995ap%26ss.233..261c&link_type=abstract

Astrophysics and Space Science, Volume 233, Issue 1-2, pp. 261-266

Astronomy and Astrophysics

Astrophysics

2

Agn, Liners, Radiation Mechanisms, Shock Waves

Scientific paper

AGN spectra are investigated by comparing model calculations with observations. Line intensity ratios show that the emitting gas is heated by shocks. Therefore, composite models which consistently account for both shocks, accompanying the radial motion of the gaseous clouds, and a photoionizing radiation flux are used. Liners are ambiguous objects between AGN and Starburst galaxies, therefore, power-law or black body radiations are considered in the models, depending on the characteristics of the line spectra. The SUMA code is used. The results show that shocks definitively play an important role, even if a photoionizing flux is generally present. Particularly, the heterogeneous nature of the objects, which are classified as Liners, is confirmed.

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