Where are the Low-Mass Population III Stars ?

Understand

We study the number and the distribution of low mass Pop III stars in the Milky Way.

• In our numerical model, hierarchical formation of dark matter minihalos and Milky Way sized halos are followed by a high resolution cosmological simulation.
• We model the Pop III formation in H2 cooling minihalos without metal under UV radiation of the Lyman-Werner bands.
• Assuming a Kroupa IMF from 0.15 to 1.0 Msun for low mass Pop III stars, as a working hypothesis, we try to constrain the theoretical models in reverse by current and future observations.