Spectral classification of emission-line galaxies

Details Spectral classification of emission-line galaxies Spectral classification of emission-line galaxies

Feb 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apjs...63..295v&link_type=abstract

Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 63, Feb. 1987, p. 295-310. NSERC-supported research.

Astronomy and Astrophysics

Astrophysics

1215

Emission Spectra, Seyfert Galaxies, Spectral Line Width, Spectrum Analysis, Active Galaxies, Astronomical Models, Astronomical Spectroscopy, H Ii Regions, Hot Stars, Interstellar Extinction, Photoionization, Star Formation

Scientific paper

A revised method of classification of narrow-line active galaxies and H II region-like galaxies is proposed. It involves the line ratios which take full advantage of the physical distinction between the two types of objects and minimize the effects of reddening correction and errors in the flux calibration. Large sets of internally consistent data are used, including new, previously unpublished measurements. Predictions of recent photoionization models by power-law spectra and by hot stars are compared with the observations. The classification is based on the observational data interpreted on the basis of these models.

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