On modelling SAC's regions in early type atmospheres

Details On modelling SAC's regions in early type atmospheres On modelling SAC's regions in early type atmospheres

Oct 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003pobeo..76..179d&link_type=abstract

Publications of the Astronomical Observatory of Belgrade (ISSN 0373-3742), No. 76, p. 179 - 183 (2003). In: IV Serbian Conferenc

Astronomy and Astrophysics

Astronomy

Satellite Absorption Components, Stellar Atmospheres

Scientific paper

We test the ideas that probably DACs are not unknown absorption spectral lines, but spectral lines (satellite absorption components) of the same ion and the same wavelength as a main spectral line, shifted at different Δλ. In addition, DACs are not always discrete absorption spectral lines, but in most cases lines that are blended among themselves as well as with the main spectral line. This means that when we deal with a significant spectral line, which is accompanied by satellite absorption components, we should not regard them as independent spectral lines, but as a unified formation which must be dealt with as one spectral line splited into a series of components. For these reasons we prefer to name them Satellite Absorption Components (SACs) and not discrete Absorption components (DACs).

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