Discovery of the binary nature of the magnetospheric B-type star ρ Oph A M. E. Shultz, I. Berry, D. Bohlender, G. Catanzaro, M. Giarrusso, R. Klement, J. Labadie-Bartz, F. Leone, P. Leto, C. Neiner et al. (4 more) A&A, 700 (2025) A14 Published online: 28 July 2025 DOI: 10.1051/0004-6361/202554023