Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aipc..254..212z&link_type=abstract
In: Testing the AGN paradigm; Proceedings of the 2nd Annual Topical Astrophysics Conference, Univ. of Maryland, College Park, Oc
Astronomy and Astrophysics
Astrophysics
2
Black Body Radiation, Luminosity, Lyman Alpha Radiation, Seyfert Galaxies, Ultraviolet Emission, Continuous Radiation, Iue, Line Spectra
Scientific paper
It is suggested that the UV bump which the low-ionization lines of the Seyfert galaxy Fairall 9 follow has a shape more complicated than a simple blackbody curve and has a rather steep drop around 30 eV. The degree of luminosity dependence of the equivalent width of Ly-alpha, semiforbidden Si IV, and C IV is inversely correlated with an individual emission line's ionization level. This explains why only the C IV equivalent width exhibits a significant luminosity dependence (the Baldwin effect).
Fang Li-zhi
Luc Binette
Zheng Wei
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