The width of Herschel filaments varies with distance G. V. Panopoulou, S. E. Clark, A. Hacar, F. Heitsch, J. Kainulainen, E. Ntormousi, D. Seifried and R. J. Smith A&A, 657 (2022) L13 Published online: 20 January 2022 DOI: 10.1051/0004-6361/202142281