阻尼Lyman-α吸收体丰度的简单解析模型
天体物理学
2016-08-30 v2
摘要
presented a simple analytical model for estimating the fraction (Ω_gas) of matter in gaseous form within the collapsed dark matter (DM) haloes. The model is developed using (i) the Press-Schechter formalism to estimate the fraction of baryons in DM haloes, and (ii) the observational estimates of the star formation rate at different redshifts. The prediction for Ω_gas from the model is in broad agreement with the observed abundance of the damped Ly-α systems. Furthermore, it can be used for estimating the circular velocities of the collapsed haloes at different redshifts, which could be compared with future observations.
引用
@article{arxiv.astro-ph/0110359,
title = {A simple analytical model for the abundance of damped Ly-\alpha absorbers},
author = {T. Roy Choudhury and T. Padmanabhan},
journal= {arXiv preprint arXiv:astro-ph/0110359},
year = {2016}
}
备注
Revised version; Accepted for publication in ApJ