The physical and chemical structure of Sagittarius B2 - VI. UCHii regions in Sgr B2 F. Meng, Á. Sánchez-Monge, P. Schilke, A. Ginsburg, C. DePree, N. Budaiev, D. Jeff, A. Schmiedeke, A. Schwörer, V. S. Veena and Th. Möller A&A, 666 (2022) A31 Published online: 04 October 2022 DOI: 10.1051/0004-6361/202243674