银河系厚盘恒星的年龄-金属度关系

Age-Metallicity Relation of Stars in the Galactic Thick Disk

对太阳邻域内银河系盘星、特别是厚盘恒星年龄-金属度关系的研究进展作了较为详细的回顾和评述；说明目前对盘星是否确实存在年龄-金属度关系还存在争议，而厚盘恒星可能存在这种关系。同时指出，要得出明晰的结论，在观测资料的基础上取得合理的恒星样本至关重要。

A historic progress on recent studies of whether there is a possible age-metallicity relation of stars in the Galactic disk, especially in the Galactic thick disk, is reviewed in some details. It is shown from investigations given by different authors during last more than 20 years that there are some conflicting conclusions on the age-metallicity relation of stars in the Galactic disk. Still, there is a possible age-metallicity relation for stars in the Galactic thick disk. It is pointed out that the key to accurate determination of the age-metallicity relation of stars is how to obtain reasonable, big enough samples of the stars on the basis of more observational data available.