HK photometry in an UCHII region near Sh2-217

We study stars and gas in and around the HII region Sh 2-217 to see if the various physical parameters derived from the data (such as column densities, masses, sizes, and...

本研究针对电离氢区（HII region）Sh 2-217及其周边的恒星与气体展开观测分析，旨在验证从该数据集推导得到的各类物理参数——例如柱密度、质量、尺寸等——是否符合相关预期。