The infrared color evolution of active nuclei

Details The infrared color evolution of active nuclei The infrared color evolution of active nuclei

Jul 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...330..743b&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 330, July 15, 1988, p. 743-750.

Astronomy and Astrophysics

Astronomy

13

Active Galactic Nuclei, Color-Color Diagram, Infrared Sources (Astronomy), Seyfert Galaxies, Far Infrared Radiation, Infrared Spectra, Interstellar Matter, Luminosity, Starburst Galaxies

Scientific paper

The far-infrared color evolution is studied for galaxies with a nuclear starburst or an AGN. The nuclear source heats the surrounding dust to an effective blackbody temperature. The color and luminosity evolution for such galaxies is simulated by letting the central heating source and the resulting warm dust emission (the primary source) decay exponentially in combination with a slower decaying secondary IR emission source. Secondary spectral components can be nonthermal or (hot or cold) thermal in nature and may be associated with the nuclear activity or with the rest of the galaxy. The evolving far-infrared (FIR) galaxy can be modeled very effectively with an appropriate mixture of primary and secondary luminosity contributions.

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