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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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