Barium and europium abundances in high- and low-α halo stars Guangmei Wang, Ji Li, Zhengxue Chang, Jianrong Shi, Zichuan Li, Miao Tian and Wenyuan Cui A&A, 695 (2025) A94 Published online: 11 March 2025 DOI: 10.1051/0004-6361/202346883