The age of the halo as determined from halo field stars

• 作 者: Jin-Cheng Guo Chao Liu Ji-Feng
• 机 构: KeyLaboratoryofOpticalAstronomy,CollegeofAstronomyandSpaceSciences
• 出 处: 天文和天体物理学研究：英文版
• 发表日期: 2016年3期
• 关键词: 恒星 晕圈 年龄估计 不确定性 扩散过程 银河系 星系 星星 galaxies： halos -- Galaxy： evolution -- stars： ki
• 基金项目: Acknowledgements We thank the anonymous referee for constructive suggestions, which improved this paper significantly. We thank professor Achim Weiss for his generous offering of the full version of t

The age of the Galactic halo is a critical parameter that can constrain the origin of the stellar halo.In general, the Galactic stellar halo is believed to be very old. However, different independent measurements and techniques based on various types of s