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A dominant population of optically invisible massive galaxies in the early Universe

Elbaz, D.; Franco, M.; Shu, X. +9 more

Our current knowledge of cosmic star-formation history during the first two billion years (corresponding to redshift z > 3) is mainly based on galaxies identified in rest-frame ultraviolet light¹. However, this population of galaxies is known to under-represent the most massive galaxies, which have rich dust content and/or old stella…