期刊
SCIENCE
卷 365, 期 6452, 页码 478-+出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aau3181
关键词
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资金
- National Science Center (NCN), Poland [MAESTRO 2014/14/A/ST9/00121]
- NCN [2013/11/D/ST9/03445, MAESTRO 2016/22/A/ST9/00009]
- Foundation for Polish Science-Program START
The Milky Way is a barred spiral galaxy, with physical properties inferred from various tracers informed by the extrapolation of structures seen in other galaxies. However, the distances of these tracers are measured indirectly and are model-dependent. We constructed a map of the Milky Way in three dimensions, based on the positions and distances of thousands of classical Cepheid variable stars. This map shows the structure of our Galaxy's young stellar population and allows us to constrain the warped shape of the Milky Way's disk. A simple model of star formation in the spiral arms reproduces the observed distribution of Cepheids.
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