The Lyman-continuum photon production efficiency in the high-redshift Universe

作者：Stephen M. Wilkins, Yu Feng, Tiziana DiMatteo, Rupert A. C. Croft, E. R. Stanway, R. J. Bouwens, P. Thomas · 发表于：Monthly Notices of the Royal Astronomical Society Letters · 年份：2016 · DOI：10.1093/mnrasl/slw007 · 被引用次数：64 · 研究领域：Galaxies: Formation, Evolution, Phenomena、Adaptive optics and wavefront sensing、Cosmology and Gravitation Theories

Abstract The Lyman-continuum photon production efficiency (ξion) is a critical ingredient for inferring the number of photons available to reionize the intergalactic medium. To estimate the theoretical production efficiency in the high-redshift Universe we couple the BlueTides cosmological hydrodynamical simulation with a range of stellar population synthesis models. We find Lyman-continuum photon production efficiencies of log10(ξion/erg−1 Hz) ≈ 25.1–25.5 depending on the choice of stellar population synthesis model. These results are broadly consistent with recent observational constraints at high-redshift though favour a model incorporating the effects of binary evolution.