Hidden in Plain Sight: A Massive, Dusty Starburst in a Galaxy Protocluster at z = 5.7 in the COSMOS Field
Riccardo Pavesi et al 2018 ApJ 861 43
CRLE, a serendipitously discovered dusty, starbursting galaxy at z = 5.667, is the highest-redshift, most luminous starburst in the COSMOS field, forming stars at a rate of at least 1500 M⊙/yr in a region only ~3 kpc across.