The effects of ionization feedback on star formation: a case study of the M 16 H II region Jin-Long Xu, Annie Zavagno, Naiping Yu, Xiao-Lan Liu, Ye Xu, Jinghua Yuan, Chuan-Peng Zhang, Si-Ju Zhang, Guo-Yin Zhang, Chang-Chun Ning and Bing-Gang Ju A&A, 627 (2019) A27 Published online: 27 June 2019 DOI: 10.1051/0004-6361/201935024