Mathematics – Logic
Scientific paper
Nov 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1294..289s&link_type=abstract
THE FIRST STARS AND GALAXIES: CHALLENGES FOR THE NEXT DECADE. AIP Conference Proceedings, Volume 1294, pp. 289-290 (2010).
Mathematics
Logic
1
Population Iii Stars, Cosmology, Hydrodynamics, Solar Activity, Population Iii Stars, Origin And Formation Of The Universe, Hydrodynamics, Diameter, Rotation, And Mass
Scientific paper
We investigate the formation of metal-free, Population III (Pop III), stars within a minihalo at z~=20, starting from cosmological initial conditions. We follow the collapsing gas in the center of the minihalo up to number densities of 1012 cm-3. We then study the protostellar accretion onto the initial hydrostatic core, which we represent as a growing sink particle. We continue our simulation for 5000 yr after the first sink particle has formed. During this time, a disk-like configuration is assembled around the first protostar. At the end of the simulation, a small multiple system has formed within this disk, dominated by a binary with masses ~40 Msolar and ~10 Msolar. If Pop III stars were to form typically in binaries or small multiples, the standard model of primordial star formation, where single, isolated stars are predicted to form in minihalos, would have to be modified.
Bromm Volker
Greif Thomas H.
Stacy Athena
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