The collapse of primordial stars: importance of radiation

Details The collapse of primordial stars: importance of radiation The collapse of primordial stars: importance of radiation

Jul 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002ap%26ss.281..479h&link_type=abstract

Astrophysics and Space Science, v. 281, Issue 1, p. 479-482 (2002).

Astronomy and Astrophysics

Astrophysics

Scientific paper

We simulate the collapse of a primordial protostellar cloud by means of a 1D hydrodynamics code accounting for chemical evolution, radiative transfer and radiation pressure. We find that the role of radiation pressure is negligible throughout the whole simulations, i.e. Until shortly after the formation of a central hydrostatic core. We also estimate the luminosity and the spectrum of such collapsing clouds. The luminosity is initially due to a number of H2 lines and is of the order of 1033-34 erg s-1. It then grows to values ≳1036 erg s-1 by the time the core forms, and results from both HH lines and continuum radiation.

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