astro-ph.GA
No Redshift Evolution in the Fe II/Mg II Flux Ratios of Quasars across Cosmic Time
Danyang Jiang Masafusa Onoue Linhua Jiang Samuel Lai Eduardo Banados George D. Becker Manuela Bischetti Sarah E. I. Bosman Rebecca L. Davies Valentina DOdorico Emanuele Paolo Farina Martin G. Haehnelt Chiara Mazzucchelli Jan-Torge Schindler Fabian Walter Yongda Zhu