Was Star Formation Suppressed in High‐Redshift Minihalos?
- 10 October 2006
- journal article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 650 (1) , 7-11
- https://doi.org/10.1086/506580
Abstract
The primordial gas in the earliest dark matter halos, collapsing at redshifts around z=20, with masses M_halo=10^6 M_sun, and virial temperatures T_vir 10^4K). This conclusion is insensitive to assumptions about the efficiency of ionizing photon production in the large halos, as long as reionization ends by z=6, as required by the spectra of bright quasars at z<6. Our conclusion is strengthened if the clumping of the ionized gas evolves with redshift, as suggested by semi-analytical predictions and three-dimensional numerical simulations.Keywords
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