A Be star that turned bright and blue during a major outburst Qing Gao, Wei Wang, Dietrich Baade, Jifeng Liu, Thomas Rivinius, Catalina Arcos, Elisson S. G. de Almeida, Hailong Yuan, Yu Bai, Slobodan Jankov et al. (9 more) A&A, 694 (2025) A131 Published online: 06 February 2025 DOI: 10.1051/0004-6361/202452792