Abstract
A calculation is given of the growth of multicored (‘plum-pudding’) interstellar grains as the result of simultaneous condensation of an icy matrix on small cores combined with coagulation of the resulting grains induced by radiation pressure. It is shown that starting with cores of radius ∼10−6 cm in normal gas clouds generally gives rise to plum-pudding grains of radius ∼10−5 cm after 108–109 yr.
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