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Optical colours and polarization of a model reflection nebula. II. Silicate and graphite grains in a nebula with the star in the rear
Author(s) -
Shah G. A.
Publication year - 1977
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.19772980608
Subject(s) - reflection nebula , nebula , emission nebula , protoplanetary nebula , physics , silicate , astronomy , polarization (electrochemistry) , astrophysics , optics , stars , chemistry
The colour difference between the star and the attendant reflection nebula and polarization both caused by silicate and graphite grains have been given. The properly normalized size distribution function for each type of grains has been considered within homogeneous plane parallel slab‐model of the reflection nebula with the star in the rear. Contrary to some earlier results, it has been possible to show that silicate grains can certainly play a role in the phenomena of reflection nebulae.