![M101: Spectral Observations of H ii Regions and Their Physical Properties]()
M101: Spectral Observations of H ii Regions and Their Physical PropertiesHu, Ning; Wang, Enci; Lin, Zesen; Kong, Xu; Cheng, Fuzhen; Fan, Zou; Fang, Guangwen; Lin, Lin; Mao, Yewei; Wang, Jing; Zhou, Xu; Zhou, Zhiming; Zhu, Yinan; Zou, Hu · The Astrophysical Journal · 2018