HD 207897 b: A dense sub-Neptune transiting a nearby and bright K-type star N. Heidari, I. Boisse, J. Orell-Miquel, G. Hébrard, L. Acuña, N. C. Hara, J. Lillo-Box, J. D. Eastman, L. Arnold, N. Astudillo-Defru et al. (83 more) A&A, 658 (2022) A176 Published online: 18 February 2022 DOI: 10.1051/0004-6361/202141429