期刊
SCIENCE
卷 323, 期 5912, 页码 353-355出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1165626
关键词
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资金
- NASA [1257184]
- Australian Research Council
- Japan Society for the Promotion of Science fellowship
- Science and Technology Facilities Council [PP/D000955/1, ST/F003196/1, PP/F000057/1, ST/G002355/1] Funding Source: researchfish
- STFC [ST/F003196/1, PP/D000955/1, PP/F000057/1, ST/G002355/1] Funding Source: UKRI
Interstellar dust plays a crucial role in the evolution of galaxies. It governs the chemistry and physics of the interstellar medium. In the local universe, dust forms primarily in the ejecta from stars, but its composition and origin in galaxies at very early times remain controversial. We report observational evidence of dust forming around a carbon star in a nearby galaxy with a low abundance of heavy elements, 25 times lower than the solar abundance. The production of dust by a carbon star in a galaxy with such primitive abundances raises the possibility that carbon stars contributed carbonaceous dust in the early universe.
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