The properties of He II 1640 emitters at z ~ 2.5-5 from the VANDELS survey

A. Saxena, L. Pentericci, M. Mirabelli +24

Strong He II emission is produced by low-metallicity stellar populations. Here, we aim to identify and study a sample of He II $\lambda 1640$-emitting galaxies at redshifts of $z \sim 2.5…