Protostellar Feedback Processes and the Mass of the First Stars
Jonathan C. Tan (1), Britton D. Smith (2), Brian W. O'Shea (3) ((1), Depts. of Astronomy & Physics, University of Florida, (2) Dept. of, Astrophysical & Planetary Sciences, University of Colorado, (3) Dept. of, Physics & Astronomy, Michigan State University)
TL;DR
This paper reviews models of the first star formation, focusing on how feedback processes and dark matter annihilation influence the mass of Population III.1 stars, and predicts their initial mass function based on simulations.
Contribution
It introduces a detailed analysis of protostellar feedback and dark matter effects, providing predictions for the initial mass function of the first stars.
Findings
Dark matter annihilation may alter feedback processes.
Predicted masses of first stars from simulations.
Estimated initial mass function evolution with redshift.
Abstract
We review theoretical models of Population III.1 star formation, focusing on the protostellar feedback processes that are expected to terminate accretion and thus set the mass of these stars. We discuss how dark matter annihilation may modify this standard feedback scenario. Then, under the assumption that dark matter annihilation is unimportant, we predict the mass of stars forming in 12 cosmological minihalos produced in independent numerical simulations. This allows us to make a simple estimate of the Pop III.1 initial mass function and how it may evolve with redshift.
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