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The First Stars and Galaxies: Challenges for the Next Decade Participants
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Talk
Title: Molecular Hydrogen Formation in the Early Universe: New Implications for Population III Stars from Laboratory Measurements Author(s): Daniel Wolf Savin Abstract: During the epoch of first star formation, H2 is the main coolant of primordial gas for temperatures below 10,000 K. The H2 is formed via associative detachment (AD) of H- and H. Uncertainties in the rate coefficient for this reaction have limited our understanding of protogalaxy formation during this epoch and of the characteristic masses and cooling times for the first stars. Recently we have carried out a series of laboratory measurements which remove these uncertainties. Here we will present our experimental results. We will also, using our data, present the results from new cosmological models for first star formation and discuss the cosmological implications.
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