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Please use this identifier to cite or link to this item: http://hdl.handle.net/2248/4239
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dc.contributor.authorPeraiah, A-
dc.date.accessioned2009-01-02T11:29:16Z-
dc.date.available2009-01-02T11:29:16Z-
dc.date.issued1980-
dc.identifier.citationActa Astronomica, Vol. 30, No. 4, pp. 525 - 540.en
dc.identifier.issn0001-5237-
dc.identifier.urihttp://hdl.handle.net/2248/4239-
dc.description.abstractThe equation of radiative transfer in a comoving frame has been solved for rapidly expanding gaseous medium in spherically symmetric extended stellar atmospheres. A non-LTE two-level atom with Voigt profile function is assumed. The comoving terms in the radiative transfer are discretized in the framework of the discrete space theory of Grant. These terms are simply reduced to a tri-diagonal matrix. The boundary conditions for the frequency derivative can be introduced through the elements of the first and last rows of this matrix. This seems to be quite stable for arbitrary velocities in the medium. Maximum velocities up to 60 units of mean thermal velocities have been considered.en
dc.language.isoenen
dc.publisherCopernicus Foundation for Polish Academyen
dc.relation.urihttp://adsabs.harvard.edu/abs/1980AcA....30..525Pen
dc.rights© Copernicus Foundation for Polish Academyen
dc.subjectGas Expansionen
dc.subjectRadial Velocityen
dc.subjectRadiative Transferen
dc.subjectStellar Atmospheresen
dc.subjectStellar Spectraen
dc.subjectAtomic Energy Levelsen
dc.subjectBoundary Conditionsen
dc.subjectBoundary Value Problemsen
dc.subjectIncident Radiationen
dc.subjectLine Spectraen
dc.subjectMatrices (Mathematics)en
dc.subjectThermodynamic Equilibriumen
dc.subjectVoigt Effecten
dc.titleEffects of high radial velocities on line transfer in extended atmospheresen
dc.typeArticleen
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