Stellar population ages and metallicities from colors

Two important stellar-population parameters (age and metallicity) of the dominant stellar populations (DSPs) of galaxies are usually estimated by comparing the observed...星系主导恒星种群（Dominant Stellar Populations，DSPs）的两项重要恒星种群参数——年龄与金属丰度（metallicity），通常通过与观测得到的[...]进行比较来估算。