Origin of Amorphous Interstellar Grains

Details Origin of Amorphous Interstellar Grains Origin of Amorphous Interstellar Grains

Sep 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981pthph..66..903s&link_type=abstract

Progress of Theoretical Physics, Vol. 66, No. 3, pp. 903-912

Physics

24

Scientific paper

Formation process of amorphous interstellar grains is studied theoretically. Crystallization in iron, magnesium silicate and carbon grains newly formed at various astrophysical sites is investigated. The probability of amorphous grain formation, which is determined by properties of matter and conditions of grain formation sites (pressure, cooling time scale and chemical composition), becomes larger with shorter cooling time and/or lower pressure. We expect that novae, supernovae and atmospheres of late type stars supply small amorphous grains of MgSiO3 or carbon.

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