A lanthanide-rich kilonova in the aftermath of a long gamma-ray burst

Yu-Han Yang, E. Troja, Brendan O’Connor, Chris L. Fryer, Myungshin Im, Joe Durbak, Gregory S. H. Paek, R. Ricci, Clécio R. Bom, J. H. Gillanders, A. J. Castro‐Tirado, Zong-Kai Peng, S. Dichiara, Geoffrey Ryan, Hendrik van Eerten, Zi-Gao Dai, Seo-Won Chang, Hyeonho Choi, Kishalay De, Y. D. Hu, C. D. Kilpatrick, A. Kutyrev, Mankeun Jeong, Chung‐Uk Lee, Martı́n Makler, Felipe Navarete, Ignacio Pérez-García