ISO spectroscopy - The study of active galaxies

Details ISO spectroscopy - The study of active galaxies ISO spectroscopy - The study of active galaxies

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992ncimc..15.1013s&link_type=abstract

Nuovo Cimento C, Serie 1 (ISSN 0390-5551), vol. 15 C, no. 6, p. 1013-1020.

Astronomy and Astrophysics

Astronomy

Active Galaxies, Emission Spectra, Infrared Spectroscopy, Line Spectra, Photoionization, Astronomical Models, Infrared Astronomy, Sky Surveys (Astronomy)

Scientific paper

Infrared spectroscopy can greatly help in the understanding of the active galaxies phenomena, having the advantage over optical and UV spectroscopy of penetrating those nuclei heavily obscured by absorbing dust. The standard photoionization code CLOUDY by Ferland has been used to predict the intensities of the infrared ionic fine-structure lines. Examples of line ratio diagrams are presented which constrain the two main free parameters of the models, and separate line emission in the different regions of active galaxies. Moreover, some line ratio diagrams can disentangle emission-line components from shock excited and photodissociated gas. Finally, we show that the observations of these infrared lines will be possible in the near future with the ISO spectrometers.

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