Bipolar H II regions - II. Morphologies and star formation in their vicinities M. R. Samal, L. Deharveng, A. Zavagno, L. D. Anderson, S. Molinari and D. Russeil A&A, 617 (2018) A67 Published online: 13 September 2018 DOI: 10.1051/0004-6361/201833015