Academia Sinica Institute of Astronomy & Astrophysics
中央研究院天文及天文物理研究所
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星際與拱星介質

The life cycle of dust in the interstellar medium of a galaxy
圖片來源: Kemper, Francisca
The life cycle of dust in the interstellar medium of a galaxy
Stars form the molecular cloud (center) and develop either as a high-mass (right) or a low-mass star (left).
Upon a supernova explosion in case of high-mass stars, or a process of more gradual mass loss (AGB/Planetary Nebula phase), material enriched by the products of nucleosynthesis is ejected from the stars, and added to the ISM. Dust formation takes place in the stellar ejecta.
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