Strontium and helium in the kilonova AT2017gfo: Origin of the 1μm feature constrained via NLTE calculations

Aayush Arya, Rasmus Damgaard, Albert Sneppen +4

Mergers of neutron stars are believed to be one of the primary sites for the synthesis of the universe's heavy elements via the rapid neutron capture process. AT2017gfo, the kilono…