Hot cores and cold grains
作者： C. M. Walmsley , P. Schilke
DOI: 10.1007/978-94-011-2761-5_57
关键词: Abundance (ecology) 、 Physics 、 Core (optical fiber) 、 Astrophysics 、 Molecular cloud
摘要: A review is given of the evidence for depletion heavy elements in dense molecular cloud clumps onto dust grain surfaces. Particular attention to recent controversy over nature NGC 2024. We also discuss ammonia observations “hot core” regions and that NH3 abundance greatly enhanced.
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