The N IV Density Regions in the Spectra of 20 Oe Stars

Details The N IV Density Regions in the Spectra of 20 Oe Stars The N IV Density Regions in the Spectra of 20 Oe Stars

Sep 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aipc..938..206a&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

Stellar Atmospheres, Radiative Transfer, Opacity And Line Formation, Main-Sequence: Early-Type Stars, Atomic And Molecular Data, Spectra, And Spectral Parameters

Scientific paper

The presence of Satellite Absorption Components (SACs) in the N IV spectral lines of 20 Oe stars of different spectral subtypes were analyzed and the physical parameters which characterize the corresponding N IV density regions were studied. We found that the N IV spectral lines consist of one or two Satellite Absorption Components. We calculate the values of the apparent rotational and radial velocities, the random ion velocities, as well as the Full Width at Half Maximum (FWHM), the absorbed energy and the column density of the independent regions of matter which produce the main and the satellite components of the studied spectral lines. Finally, we present the variations of these physical parameters as a function of the spectral subtype.

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