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高爽 Shuang Gao
北京师范大学 天文系 讲师
科普作家、翻译,科学传播工作者
Astronomer & lecturer, Department of Astronomy, Beijing Normal University
Science writer & translator
最近的研究 Recent science
Binary fraction in the Milky Way
How many binary stars in our Milky Way? The fraction of binary is a key parameter to adjust Galactic model and potential distrbution function. Large spectral surveys cover deep and wide samples with repeat observations of radial velocities, which can be used to derive binarity characters.
Milky Way evolution
Spectral data privide stellar basic parameters including Teff, logg and [Fe/H], which can be used to estimate age and distance distrbution of populations.
最近的活动 Recent event
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