Observations from 1 to 20 microns of low-luminosity active galaxies

Details Observations from 1 to 20 microns of low-luminosity active galaxies Observations from 1 to 20 microns of low-luminosity active galaxies

Apr 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...291..117l&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 291, April 1, 1985, p. 117-127. Research supported by the Science and Engin

Astronomy and Astrophysics

Astrophysics

79

Active Galaxies, Galactic Nuclei, Infrared Stars, Seyfert Galaxies, Spiral Galaxies, Stellar Evolution, Astronomical Photometry, Emission Spectra, Interstellar Matter, Line Spectra, Radiant Flux Density, Radiative Recombination, Starburst Galaxies

Scientific paper

The 1-20 micron photometry of Liners (Low Ionization Nuclear Emission-line Regions), star burst nuclei, and high-excitation (mostly Seyfert 2) nuclei are presented and discussed. Liners have strong, flattish 10-20 micron excesses but are dominated by a stellar population through 1-5 micron. By contrast, most type 2 Seyfert galaxies and all star-burst nuclei have flux distributions that are flat through 1-5 microns, and steeply rising through 10-20 microns. The 1-5 micron flux distributions of type 2 Seyfert galaxies and starburst nuclei can be explained by mixtures of stellar emission, recombination radiation, and hot dust, although a nonthermal component is likely in a few objects. One Liner, NGC 3079, was found to be extended to 10 microns. A map which shows the 10-micron and optical maxima to differ by 6 arcsec is presented.

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