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Siliziumkarbid als möglicher Bestandteil des interstellaren Staubes
Author(s) -
Friedemann Chr.
Publication year - 1968
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.19682910405
Subject(s) - physics , silicon carbide , astrophysics , atmosphere (unit) , cosmic dust , interstellar medium , stars , condensation , materials science , galaxy , thermodynamics , composite material
Assuming isothermic atmospheres for the carbon stars, the growth and motion of silicon carbide particles were computed for a set of densities of the atmospheres. It is shown that the particles are able to escape from the atmosphere in case the surface acceleration is sufficiently low. An estimation of the whole mass of the expelled particles points out that only a small fraction of the interstellar dust can be silicon carbide. Nevertheless it is possible that these particles could act as condensation cores in the interstellar space.