10–12 Nov 2010
Desy-Campus
Europe/Berlin timezone

Formation of the First Galaxies

10 Nov 2010, 14:00
20m
Auditorium (Building 05) (Desy-Campus)

Auditorium (Building 05)

Desy-Campus

Deutsches Elektronen-Synchrotron Notkestraße 85, D-22607 Hamburg
Contributed talk Early stars Session 3

Speaker

John Wise (Princeton University)

Description

The first stars are thought to be extremely luminous and reside in dark matter halos with masses of approximately a million solar masses. I will present results from radiation hydrodynamics simulations that follow the formation of tens of metal-free stars and their impact on high-redshift galaxy formation and reionization. HII regions created by the first stars are a few kiloparsecs in radius, which then overlap with each other and constitute a volume filling fraction of about a quarter at redshift 15. We also find that the first galaxies are enriched up to 1/1000th of solar metallicity, which is sufficient to transition to lower-mass star formation. I will finish by presenting new results that self-consistently follow the transition from Pop III to II star formation for the first time.

Primary author

John Wise (Princeton University)

Presentation materials