Abstract

Detectability of "First" Light with JWST

Mia Bovill (STScI)

Massimo Stiavelli (STScI)

The first Pop III stars at z>20 will be beyond the reach of even JWST without extremely strong gravitational lensing. However, in the presence of a LW background, a subset of halos which cross the Lyman limit at late times (z<15) may contain pristine gas, allowing either direct collapse to ~10^5 M_solar black holes or the formation of a 10^4-10^5 M_solar cluster of Pop III stars. The latter would be detectable by JWST. Here we present predictions for the number and detectability of these late forming Pop III galaxies as well as a more general overview of the detestability of Pop II galaxies and early massive black holes with JWST.

Talk