First detection of the 448 GHz ortho-H2O line at high redshift: probing the structure of a starburst nucleus at z = 3.63C. Yang, E. González-Alfonso, A. Omont, M. Pereira-Santaella, J. Fischer, A. Beelen and R. GavazziA&A, 634 (2020) L3DOI: https://doi.org/10.1051/0004-6361/201937319