Spherically Symmetric NLTE Model Atmospheres of Hot Hydrogen-Helium First Stars

0388464 - ASÚ 2013 RIV US eng J - Journal Article
Kubát, Jiří
Spherically Symmetric NLTE Model Atmospheres of Hot Hydrogen-Helium First Stars.
Astrophysical Journal Supplement Series. Roč. 203, č. 2 (2012), 20/1-20/10. ISSN 0067-0049. E-ISSN 1538-4365
R&D Projects: GA ČR GA205/08/0003
Institutional support: RVO:67985815
Keywords : radiative transfer * stars * atmospheres
Subject RIV: BN - Astronomy, Celestial Mechanics, Astrophysics

We present results of our calculations of NLTE model stellar atmospheres for hot Population III stars composed of hydrogen and helium. We use our own computer code for the calculation of spherically symmetric NLTE model atmospheres in hydrostatic and radiative equilibrium. The model atmospheres are then used for the calculation of emergent fluxes. These fluxes serve to evaluate the flow of high-energy photons for energies higher than ionization energies of hydrogen and helium, the so-called ionizing photon fluxes. We also present the time evolution of the ionizing photon fluxes.
Permanent Link: http://hdl.handle.net/11104/0217363