Apocenter pileup and arcs: A narrow dust ring around HD 129590 J. Olofsson, P. Thébault, A. Bayo, J. Milli, R. G. van Holstein, Th. Henning, B. Medina-Olea, N. Godoy and K. Maucó A&A, 674 (2023) A84 Published online: 07 June 2023 DOI: 10.1051/0004-6361/202346097