高红移星系的性质

IF 1.1 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

Revista Mexicana de Astronomia y Astrofisica Pub Date : 2021-12-21 DOI:10.22201/ia.01851101p.2022.58.01.07

L. '. Garc'ia

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引用次数: 1

摘要

这项工作研究了早期宇宙中再电离结束时第一批星系和它们的宿主暗物质晕之间的联系。我们的数值模型(已经在早期的研究中提出)追踪了z = 4 - 8的恒星形成历史，星系恒星质量函数，恒星到晕的质量分布以及其他高红移星系的统计数据。所有这些预测都与迄今为止的观测和其他高分辨率宇宙模拟相一致。这项工作的一个关键发现是对宇宙恒星形成历史的可靠估计(通过实施星系和超新星风以及原子和分子冷却过程)以及星系间介质的自一致化学污染。理论模型与再电离结束时星系光度函数α = - 2的微弱端斜率相一致。

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THE PROPERTIES OF HIGH REDSHIFT GALAXIES

This work studies the connection between the first galaxies and their hosting dark matter halos in the early Universe when reionization is concluding. Our numerical models (already presented in an earlier study) trace the star formation history at z = 4 - 8, the galaxy stellar mass function, the stellar-to-halo mass distribution, and other high redshift galaxies statistics. All these predictions are consistent with observations to date and with other high-resolution cosmological simulations. A key finding of this work is the robust estimate of the cosmic star formation history (through the implementation of galaxy and supernova winds and atomic and molecular cooling processes) and self-consistent chemical pollution of the intergalactic medium. The theoretical models are compatible with a faint-end slope of the galaxy luminosity function of α = −2 at the end of reionization.

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来源期刊

Revista Mexicana de Astronomia y Astrofisica 地学天文-天文与天体物理

CiteScore

1.30

自引率

10.00%

发文量

审稿时长

>12 weeks

期刊介绍： The Revista Mexicana de Astronomía y Astrofísica, founded in 1974, publishes original research papers in all branches of astronomy, astrophysics and closely related fields. Two numbers per year are issued and are distributed free of charge to all institutions engaged in the fields covered by the RMxAA.