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Solution of the comoving-frame equation of transfer in spherically symmetric flows. V - Multilevel atomsThe coupled radiative transfer and statistical equilibrium equations for multilevel ionic structures in the atmospheres of early-type stars are solved. Both lines and continua are treated consistently; the treatment is applicable throughout a transonic wind, and allows for the presence of background continuum sources and sinks in the transfer. An equivalent-two-level-atoms approach provides the solution for the equations. Calculations for simplified He (+)-like model atoms in parameterized isothermal wind models indicate that subordinate line profiles are sensitive to the assumed mass-loss rate, and to the assumed structure of the velocity law in the atmospheres.
Document ID
19780038408
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Mihalas, D.
(National Center for Atmospheric Research Boulder, CO, United States)
Kunasz, P. B.
(High Altitude Observatory Boulder, Colo., United States)
Date Acquired
August 9, 2013
Publication Date
January 15, 1978
Publication Information
Publication: Astrophysical Journal
Subject Category
Astrophysics
Accession Number
78A22317
Funding Number(s)
CONTRACT_GRANT: NAS5-22833
Distribution Limits
Public
Copyright
Other

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