Reduction of a particle transfer problem in finite plane-parallel media to a problem of semi-infinite media. II

1981 ◽  
Vol 14 (9) ◽  
pp. 1575-1584 ◽  
Author(s):  
E A Saad ◽  
M H Haggag ◽  
S A El Wakil
Keyword(s):  
Transfer Problem ◽  
Finite Plane ◽  
Plane Parallel ◽  
Particle Transfer ◽  
Infinite Media

scholarly journals Si II Lines in the Shell of ζ Tau

1976 ◽  
Vol 70 ◽  
pp. 315-320
Author(s):  
Sara R. Heap
Keyword(s):  
Thick Disk ◽  
Be Stars ◽  
Finite Plane ◽  
Plane Parallel ◽  
Realistic Geometry

Non-LTE strengths of Si II lines were computed in an effort to reproduce the observed strengths of Si II lines in the shell spectrum of ζ Tau. This effort was unsuccessful, probably because it assumed that the shell could be represented by a finite, plane-parallel slab. The main conclusion of this study, then, is that in order to understand the shell spectra of Be stars, a more realistic geometry must be assumed, in which the shell is represented by a thick disk.

Sign in / Sign up

Export Citation Format

Share Document