Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984natur.312..100l&link_type=abstract
Nature (ISSN 0028-0836), vol. 312, Nov. 8, 1984, p. 100, 101.
Astronomy and Astrophysics
Astronomy
Astronomical Spectroscopy, Emission Spectra, Galactic Nuclei, Interstellar Gas, Active Galactic Nuclei, Energy Budgets, Halos, Iron, Line Spectra, Seyfert Galaxies
Scientific paper
Important problems and areas of progress in the study of AGNs are discussed. Efforts to understand the physical condition of the ionized gas in AGNs and the nature of the Fe II permitted ion emission are described. Progress made in understanding the continuum radiation from the central object in AGNs is considered. The recognition that activity in galactic nuclei is widespread is addressed. The debate on the nature of the so-called Type II Seyferts is reviewed.
Lawrence Andy
Ward Martin
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