The effects of a velocity law plateau on theoretical P Cygni profiles

Details The effects of a velocity law plateau on theoretical P Cygni profiles The effects of a velocity law plateau on theoretical P Cygni profiles

Apr 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...133..110p&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 133, no. 1, April 1984, p. 110-116.

Astronomy and Astrophysics

Astronomy

14

Astronomical Models, Line Shape, Radial Velocity, Stellar Winds, Ultraviolet Spectra, Cygnus Constellation, Light Scattering, Parameterization, Relativistic Effects, Stellar Atmospheres, Ultraviolet Astronomy

Scientific paper

A grid of models has been calculated in the Sobolev approximation, to investigate the effects of a velocity "plateau" on P Cygni profiles. In particular, the authors are interested in the relevance of such a plateau to observations of narrow components in UV spectra. Although they can produce profiles which resemble those observed, with the parameterisation the authors employed it is difficult to find models consistent with the most plausible physical mechanism for plateau production, viz. multiple scattering of photons.

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