A mature quasar at cosmic dawn revealed by JWST rest-frame infrared spectroscopy

Sarah E. I. Bosman, Javier Álvarez-Márquez, L. Colina, Fabian Walter, A. Alonso‐Herrero, M. J. Ward, Göran Östlin, T. R. Greve, Gillian Wright, Arjan Bik, Leindert Boogaard, K. I. Caputi, Luca Costantin, A. Eckart, M. García-Marín, Steven Gillman, J. Hjorth, Edoardo Iani, O. Ilbert, Iris Jermann, Á. Labiano, Danial Langeroodi, Florian Peißker, Pierluigi Rinaldi, Martin Topinka, P. van der Werf, M. Güdel, Thomas Henning, Pierre-Olivier Lagage, T. P. Ray, E. F. van Dishoeck, B. Vandenbussche