The DACs and SACs Effects From Stars to Quasars. Some First General Notices

Details The DACs and SACs Effects From Stars to Quasars. Some First General Notices The DACs and SACs Effects From Stars to Quasars. Some First General Notices

Sep 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aipc..938..119d&link_type=abstract

SPECTRAL LINE SHAPES IN ASTROPHYSICS: VI Serbian Conference on Spectral Line Shapes in Astrophysics (VI SCSLSA). AIP Conference

Astronomy and Astrophysics

Astrophysics

1

Quasars, Active And Peculiar Galaxies And Related Systems, Intergalactic Matter, Quasar Absorption And Emission-Line Systems, Lyman Forest, Stellar Atmospheres, Radiative Transfer, Opacity And Line Formation

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 explain the idea of DACs and SACs phenomena, as a reason of spectral lines peculiarity in Hot Emission Stars and AGNs. We present the line function of a kinematical model enabling to study the physical parameters of the density regions in the plasma surrounding the considered objects, where DACs and SACs of a spectral line are created, producing the observed peculiar profiles. We also present some first general conclusions, deriving from the proposed model, including the relations among the physical parameters of the density regions of the plasma surrounding the Oe stars, where DACs and SACs are created, producing the observed peculiar profiles.

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