Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21942608b&link_type=abstract
American Astronomical Society, AAS Meeting #219, #426.08
Astronomy and Astrophysics
Astronomy
Scientific paper
The massive stars believed responsible for cosmic reionization also formed the first metals, subsequently enriching their host galaxies and the intergalactic medium (IGM). We use the results of large-scale N-body + Radiative Transfer simulations to map the evolving, inhomogeneous distribution of metals in galactic halos and the IGM during the epoch of reionization (EoR). The amount of metals injected into the IGM is determined by the number of ionizing photons required to ionize that region, the metallicity yield per ionizing photon for our assumed stellar populations, the escape fraction of ionization photons, f_esc,gamma, and of metals, f_esc,Z, from the halos. We present three-dimensional maps of the IGM metallicity at redshifts from the beginning of the EoR to its end at z > 6. Our metallicity maps will be compared to observations of the C IV abundance from quasar absorption lines at z 6. This will test our reionization model, determine the dependence of the predicted IGM metallicity on environment and identify the local overdensities at which we can reproduce the observed abundances.
Ahn Kyungjin
Bovill Mia S.
Iliev Ilian T.
Mao Yi
Mellema Garrelt
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