A method of measuring the [α/Fe] ratios from the spectra of the LAMOST survey

• 作 者: Ji Li Chen Han Mao-Sheng Xiang
• 机 构: DepartmentofSpace5,cienceandAstronomy,DepartmentofAstronomy,KeyLaboratoryofOpticalAstronomy,KavliIns
• 出 处: 天文和天体物理学研究：英文版
• 发表日期: 2016年7期
• 关键词: LAMOST 光谱测量 比值法 铁 高分辨率光谱 化学演化 匹配技术 测量方法 Galaxyevolution starsabundances starsfun
• 基金项目: Acknowledgements This work is supported by the National Key Basic Research Program of China （973 Program, No. 2014CB845700） and by the National Natural Science Foundation of China （Grant Nos. U1331120

The [α/Fe] ratios in stars are good tracers to probe the formation history of stellar populations and the chemical evolution of the Galaxy. The spectroscopic survey of LAMOST provides a good opportunity to determine [α/Fe] of millions of stars in the Gala