A massive interacting galaxy 510 million years after the Big Bang

Kristan Boyett, Michele Trenti, Nicha Leethochawalit, Antonello Calabrò, Benjamin Metha, Guido Roberts-Borsani, Nicolò Dalmasso, Lilan Yang, P. Santini, Tommaso Treu, Tucker Jones, Alaina Henry, Charlotte Mason, Takahiro Morishita, Themiya Nanayakkara, Namrata Roy, Xin Wang, A. Fontana, E. Merlin, M. Castellano, D. Paris, Maruša Bradač, Matthew A. Malkan, Danilo Marchesini, Sara Mascia, Karl Glazebrook, L. Pentericci, E. Vanzella, Benedetta Vulcani