Age-metallicity relation in solar neighbourhood

We derive stellar ages, from evolutionary tracks, and metallicities, from Stroemgren photometry, for a sample of 5828 dwarf and sub-dwarf stars from the Hipparcos (Cat. )...本研究基于演化轨道计算恒星年龄，并通过斯特龙根测光法（Stroemgren photometry）测定金属丰度，研究样本包含来自依巴谷星表（Hipparcos Cat.）的5828颗矮星与亚矮星……