Reference : Line profiles in expanding envelopes
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/17723
Line profiles in expanding envelopes
English
Surdej, Jean mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
1979
Astronomy and Astrophysics
EDP Sciences
73
1-13
Yes (verified by ORBi)
International
0004-6361
1432-0746
Les Ulis
France
[en] RADIATIVE TRANSFER ; STELLAR ENVELOPES ; STELLAR MODELS ; EMISSION SPECTRA ; QUASARS ; STELLAR EVOLUTION ; STELLAR STRUCTURE ; LINE SHAPE
[en] An attempt is made to show how the physical and geometrical parameters prevailing in an expanding stellar envelope can be inferred from an analysis of one or more observed line profiles. Attention is given to the Sobolev approximation, line formation in outwardly accelerating envelopes, effects of a stellar core, and radiative transfer in outwardly decelerating envelopes. General equations are derived for both types of envelope, and some typical solutions are presented. Application of the method to P Cygni lines is discussed.
Researchers
http://hdl.handle.net/2268/17723
http://esoads.eso.org/abs/1979A%26A....73....1S
The authors thank EDP Sciences for their deposit authorization

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