Mathematics – Logic
Scientific paper
Nov 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1294..173g&link_type=abstract
THE FIRST STARS AND GALAXIES: CHALLENGES FOR THE NEXT DECADE. AIP Conference Proceedings, Volume 1294, pp. 173-179 (2010).
Mathematics
Logic
Galaxies, Stellar Mass, Population Ii Main-Sequence Stars, Astronomical Telescopes, Cosmology, Redshift, Galaxy Clusters, Masses, Population Iii Stars, Astrometric And Interferometric Instruments, Origin And Formation Of The Universe, Distances, Redshifts, Radial Velocities, Spatial Distribution Of Galaxies
Scientific paper
Using three-dimensional cosmological simulations, we study the assembly process of one of the first galaxies, with a total mass of ~=108 Msolar collapsing at z~=10. We trace the transport of the heavy chemical elements produced and dispersed by a pair-instability supernova exploding in one of the minihalo progenitors. We find that mixing is quite efficient and is facilitated by turbulence generated by the virialization of the galaxy and photoheating from nearby stars. At the center of the newly formed galaxy, ~105 Msolar of cold, dense gas uniformly enriched to ~10-3 Zsolar are in a state of collapse, suggesting that a cluster of Population II stars will form. The first galaxies, as may be detected by the James Webb Space Telescope, would therefore already contain stellar populations familiar from lower redshifts.
Bromm Volker
Glover Simon C. O.
Greif Thomas H.
Klessen Ralf S.
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