Curves of growth for transiting exocomets: Application to Fe II lines in the β Pictoris system T. Vrignaud, A. Lecavelier des Etangs, F. Kiefer, A.-M. Lagrange, G. Hébrard, P. A. Strøm and A. Vidal-Madjar A&A, 684 (2024) A210 Published online: 26 April 2024 DOI: 10.1051/0004-6361/202347588