The most massive Population III stars

Teeraparb Chantavat , Siri Chongchitnan , Joseph Silk (1)

1 IAP - Institut d'Astrophysique de Paris

Recent data from the James Webb Space Telescope suggest that there are realistic prospects for detecting the earliest generation of stars at redshift ~20. These metal-poor, gaseous Population III stars are likely in the mass range $10-10^3 M_\odot$. We develop a framework for calculating the abundances of Pop III stars as well as the distribution of the most massive Pop III stars based on an application of extreme-value statistics. Our calculations use the star formation rate density from a recent simulation to calibrate the star-formation efficiency from which the Pop III stellar abundances are derived. Our extreme-value modelling suggests that the most massive Pop III stars at redshifts 10

Mots clés: stars: formation; stars: Population III; cosmology: dark ages, reionization, first stars

Domaines: Astrophysique [astro-ph]

Teeraparb Chantavat, Siri Chongchitnan, Joseph Silk. The most massive Population III stars. Monthly Notices of the Royal Astronomical Society, 2023, 522 (3), pp.3256-3262. ⟨10.1093/mnras/stad1196⟩. ⟨hal-04021920⟩