Towards Population III: The Collapse and Fragmentation of Primordial Gas

Details Towards Population III: The Collapse and Fragmentation of Primordial Gas Towards Population III: The Collapse and Fragmentation of Primordial Gas

Dec 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aas...197.7209c&link_type=abstract

American Astronomical Society, 197th AAS Meeting, #72.09; Bulletin of the American Astronomical Society, Vol. 32, p.1516

Physics

Scientific paper

We present results from three dimensional simulations of the collapse and fragmentation of primordial, zero-metal gas. We consider a variety of initial conditions and show that the gas fragments undergoing runaway collapse have a preferred mass scale, ~ 1000 Msun, set by the physics of molecular hydrogen cooling. Although this fragment mass scale is not necessarily the mass scale of the stars that eventually form out of the clumps, it strongly suggests the IMF for primordial star is biased towards massive stars ( ~ 100 Msun and above). We also examine the collapse of gas with trace metals. Until the gas metallicity reaches Z ~ 10-3 Zsun, we find that molecular hydrogen still dominates cooling, and thus star formation may still proceed in a top-heavy mode.

Affiliated with

Also associated with

No associations

Rating

Towards Population III: The Collapse and Fragmentation of Primordial Gas does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Towards Population III: The Collapse and Fragmentation of Primordial Gas, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Towards Population III: The Collapse and Fragmentation of Primordial Gas will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1725048