Physics
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aipc..876..373d&link_type=abstract
THE PHYSICS OF IONIZED GASES: 23rd Summer School and International Symposium on the Physics of Ionized Gases; Invited Lectures,
Physics
8
Atomic And Molecular Data, Spectra, And Spectral Parameters, Luminosities, Magnitudes, Effective Temperatures, Colors, And Spectral Classification, Quasars, Active And Peculiar Galaxies And Related Systems
Scientific paper
The spectra of Hot Emission Stars and AGNs present peculiar profiles that result from dynamical processes such as accretion and/or ejection of matter from these objects. In this paper we analyze DACs and SACs phenomena, which indicate the existence of layers of matter with different physical conditions and we propose that these phenomena can explain the spectral lines peculiarity in Hot Emission Stars and AGNs. We also propose a new model with which we can study the density regions in the plasma surrounding the studied objects, where DACs and SACs of a spectral line are created producing the observed peculiar profiles. Finally, we present some tests to justify the proposed model.
Danezis Emanouel
Dimitrijevic Milan S.
Lyratzi Evaggelia
Popovic Luka C.
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