Results 11 to 20 of about 300,825 (275)
The Evolution of Supermassive Population III Stars [PDF]
Monthly Notices of the Royal Astronomical Society, 2017 Supermassive primordial stars forming in atomically-cooled halos at $z \sim15-20$ are currently thought to be the progenitors of the earliest quasars in the Universe. In this picture, the star evolves under accretion rates of $0.1 - 1$ $M_\odot$ yr$^{-1}$
Haemmerlé, Lionel +4 more
core +5 more sources
Transition From Population III to Population II Stars [PDF]
The Astrophysical Journal, 2005 The transition from Population III to Population II stars is determined by the presence of a sufficient amount of metals, in particular, oxygen and carbon.
Cen, Renyue, Fang, Taotao
core +2 more sources
Population III stars: hidden or disappeared ? [PDF]
Monthly Notices of the Royal Astronomical Society, 2007 A PopIII/Pop II transition from massive to normal stars is predicted to occur when the metallicity of the star forming gas crosses the critical range Z_cr = 10^(-5 +/- 1) Z_sun.
Adelberger +56 more
core +5 more sources
Effects of BBN on Population III stars [PDF]
Thinking, Observing and Mining the Universe, 2003 The presence (or absence) of CNO elements in the primordial gas determines different behaviours in population III stars formation and evolution: we therefore present an analysis of the main channels for the synthesis of these elements in BBN in order to ...
Iocco, Fabio
core +3 more sources
Magnetorotational Collapse of Population III Stars [PDF]
Publications of the Astronomical Society of Japan, 2006 We perform a series of two-dimensional magnetorotational core-collapse simulations of Pop III stars. Changing the initial distributions of rotation and magnetic fields prior to collapse in a parametric manner, we compute 19 models.
Kotake, Kei +3 more
core +3 more sources
Cosmic Reionisation by Stellar Sources: Population III Stars [PDF]
Monthly Notices of the Royal Astronomical Society, 2004 We combine fast radiative transfer calculations with high resolution hydrodynamical simulations to study an epoch of early hydrogen reionisation by primordial stellar sources at redshifts ...
Aaron Sokasian +81 more
core +4 more sources
Pair Instability Supernovae of Very Massive Population III Stars [PDF]
The Astrophysical Journal, 2014 Numerical studies of primordial star formation suggest that the first stars in the universe may have been very massive. Stellar models indicate that non-rotating Population III stars with initial masses of 140-260 Msun die as highly energetic pair ...
Almgren, Ann +4 more
core +6 more sources
When did Population III star formation end? [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT We construct a theoretical framework to study Population III (Pop III) star formation in the post-reionization epoch (z ≲ 6) by combining cosmological simulation data with semi-analytical models. We find that due to radiative feedback (i.e. Lyman–Werner and ionizing radiation) massive haloes ($M_{\rm halo}\gtrsim 10^{9}\ \rm M_{\
Boyuan Liu, Volker Bromm
openaire +2 more sources
Modelling population III stars for seminumerical simulations [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT Theoretically modelling the 21-cm signals caused by Population III stars (Pop III stars) is the key to extracting fruitful information on Pop III stars from current and forthcoming 21-cm observations. In this work, we develop a new module of Pop III stars in which the escape fractions of ionizing photons and Lyman–Werner (LW ...
Toshiyuki Tanaka, Kenji Hasegawa
openaire +2 more sources
The luminosity of Population III star clusters [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 10 pages, 7 figures, to appear in ...
De Souza, Alexander L., Basu, Shantanu
openaire +4 more sources