Widespread subsonic turbulence in Ophiuchus North 1 Yan Gong, Shu Liu, Junzhi Wang, Weishan Zhu, Guang-Xing Li, Wenjin Yang and Jixian Sun A&A, 663 (2022) A82 Published online: 18 July 2022 DOI: 10.1051/0004-6361/202142713