IRAC photometry of massive M31 globular clusters

Several population synthesis models now predict integrated colors of simple stellar populations in the mid-infrared bands. To date, the models have not been extensively tested...当前已有多款恒星群体合成模型（Population Synthesis Models）可预测简单恒星种群（Simple Stellar Populations）在中红外波段的积分色。迄今为止，此类模型尚未得到广泛的验证。