On the Schuster Problem for a Moving Atmosphere. I.
Abstract
A numerical method is described for computing absorptionline profiles in a planeparallel stratified moving atmosphere. The method is applied to the case where (a) the outward normal velocity v increases linearly with optical depth r measured outward from the photosphere, and (b) the scattering function has a rectangular shape with (v) = (To for P  Po < Ap, and (T(P) = 0 outside this range. After discussing the accuracy of the computations made on an IBM 7090 electronic computer the results are given in the form of tables and diagrams for various values of P and x1, where P = V1#1, 1#i = 1/ V 3, V = outward velocity along the normal at the top of the atmosphere, Xl = T1/21#1, and T1 = total optical thickness of the scattering atmosphere at the center of the line.
 Publication:

The Astrophysical Journal
 Pub Date:
 November 1964
 DOI:
 10.1086/148042
 Bibcode:
 1964ApJ...140.1353A