Triggered Population III star formation: the effect of H$_2$ self-shielding

Understand

The multiplicity of metal-free (Population III) stars may influence their feedback efficiency within their host dark matter halos, affecting subsequent metal enrichment and the transition to galaxy formation.

• Radiative feedback from massive stars can trigger nearby star formation in dense self-shielded clouds.
• In model radiation self-shielding, the H$_2$ column density must be accurately computed.
• In this study, we compare two local approximations based on the density gradient and Jeans length with a direct integration of column density along rays.