Multi-wavelength campaign on NGC 7469 - I. The rich 640 ks RGS spectrum Ehud Behar, Uria Peretz, Gerard A. Kriss, Jelle Kaastra, Nahum Arav, Stefano Bianchi, Graziella Branduardi-Raymont, Massimo Cappi, Elisa Costantini, Barbara De Marco et al. (8 more) A&A, 601 (2017) A17 Published online: 21 April 2017 DOI: 10.1051/0004-6361/201629943