Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21912302g&link_type=abstract
American Astronomical Society, AAS Meeting #219, #123.02
Astronomy and Astrophysics
Astronomy
Scientific paper
The early Universe hosted a large population of small dark matter 'minihalos' that were too small to form stars on their own. Thus they existed as static objects around larger starburst galaxies until they were acted upon by some outside influence. Outflows, which have been observed around a variety of galaxies, can provide this influence in such a way as to collapse, rather than disperse the minihalo gas.
I have implemented a primordial non-equilibrium chemistry package with associated cooling rates and a model for turbulence that captures mixing processes in the AMR code FLASH. Using a simple model for the minihalo and outflow, I show that, over a wide range of model parameters, the outcome from this interaction is one or more small dense clusters of enriched, star-forming gas. These clusters will be observable with the next generation of telescopes, and they have properties remarkably like those of present-day halo globular clusters.
Gray William J.
Scannapieco Evan
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