Protostellar Feedback Processes and the Mass of the First Stars

(2) Dept. of Astrophysical & Planetary Sciences; (3) Dept. of Physics & Astronomy; Brian W. O'Shea (3) ((1) Depts. of Astronomy & Physics; Britton D. Smith (2); Jonathan C. Tan (1); Michigan State University); University of Colorado; University of Florida

Protostellar Feedback Processes and the Mass of the First Stars

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arxiv 1008.3047 v1 pith:6G5PLF6B submitted 2010-08-18 astro-ph.CO

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) This is my paper

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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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The Impact of Population III.1 Flash Reionization for CMB Polarization and Thomson Scattering Optical Depth
astro-ph.CO 2025-10 conditional novelty 5.0

An early 'Pop III.1 Flash' reionization phase shifts CMB polarization power from l<8 to l>8, allowing a higher optical depth τ≈0.08–0.09 while staying closer to Planck's low-l EE data than a standard tanh reionization model.