From the very first PopIII stars to high-redshift quasars

Abstract

Bright z = 6 quasars are extremely rare objects sitting at the center of the most massive dark-matter halos present at that time and whose luminosity is powered by accretion onto a supermassive black hole with MB H ≥ 10 9M⊙. In this paper we discuss the link between these objects and the very first Poplil stars formed at redshift z > 40, which may provide the seeds for the growth of the high-z QSO black holes. We show that within the typical volume occupied by one bright high-z QSO the remnants of the first several thousand Poplil stars formed do not end up in the most massive halos at z ≈ 6, but rather live in a large variety of environments. The black-hole seeds planted by these very first..