Optical and IR emission of a sample of IRAS galaxies

Details Optical and IR emission of a sample of IRAS galaxies Optical and IR emission of a sample of IRAS galaxies

Nov 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mnras.253...19l&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 253, Nov. 1, 1991, p. 19-26. Research supported by CNPq

Astronomy and Astrophysics

Astronomy

19

Emission Spectra, Far Infrared Radiation, Light (Visible Radiation), Seyfert Galaxies, Infrared Astronomy Satellite, Interstellar Extinction, Ionized Gases, Luminosity

Scientific paper

Observations of 12 southern warm IRAS galaxies are reported. Using absolute fluxes of lines in the optical region in connection with diagnostic diagrams, these galaxies are classified in terms of the principal excitation mechanisms, and it is found that all the galaxies are Seyferts. Far-infrared colors also are used to analyze these objects. Good correlations between the luminosity at 25 and 60 microns and the H-alpha luminosity are found. The far-infrared luminosity of Seyfert galaxies seems to depend more strongly on the number of ionizing photons than on the amount of dust.

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