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The First Stars and Galaxies: Challenges for the Next Decade Participants
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Talk
Title: The Formation of Population III Binaries from Cosmological Initial Conditions Author(s): Matthew Turk Abstract: We discuss a cosmological simulation in which the central 50 solar-mass clump breaks up into two cores, having a mass ratio of two to one, with one fragment collapsing to densities of 10^-8 gm/cm^3. The second fragment, at a distance of ~ 800 AU, is also optically thick to its own cooling radiation from molecular hydrogen lines, but is still able to cool via collision-induced emission. The two dense peaks will continue to accrete from the surrounding cold gas reservoir over a period of ~ 10^5 years and will likely form a binary star system. Furthermore, we discuss results of a parameter study comparing different molecular hydrogen formation rates on the collapse of primordial clouds, and the implications this may have on the initial mass function of Population III stars.
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