Constraints on the Galaxy Formation Models during the Epoch of Reionization with High-redshift Observations

被引：1

作者：

Ma, Qing-Bo ^{[1
,2
]}

Chen, Xiao-Rong ^{[1
]}

Li, Ming ^{[3
]}

Guo, Qi ^{[3
,4
,5
]}

Ciardi, Benedetta ^{[6
]}

Acharya, Anshuman ^{[6
]}

Wang, Xin ^{[4
,5
,7
]}

机构：

[1] Guizhou Normal Univ, Sch Phys & Elect Sci, Guiyang 550001, Peoples R China

[2] Guizhou Normal Univ, Guizhou Prov Key Lab Radio Astron & Data Proc, Guiyang 550001, Peoples R China

[3] Chinese Acad Sci, Key Lab Computat Astrophys, Natl Astron Observ, Peoples Republ ofChina4, Beijing 100101, Peoples R China

[4] Beijing Normal Univ, Inst Frontiers Astron & Astrophys, Beijing 102206, Peoples R China

[5] Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China

[6] Max Planck Inst Astrophys, D-85748 Garching, Germany

[7] Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China

来源：

ASTROPHYSICAL JOURNAL | 2025年 / 986卷 / 01期

基金：

中国国家自然科学基金;

关键词：

UV LUMINOSITY FUNCTIONS; STAR-FORMATION HISTORY; SIMILAR-TO; 10; HYDROGEN REIONIZATION; PLANCK COSMOLOGY; MASS FUNCTION; UPPER LIMITS; COSMIC DAWN; POPULATION; EVOLUTION;

D O I：

10.3847/1538-4357/add015

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We use high-resolution N-body dark matter simulations and L-Galaxies semianalytical galaxy formation models to explore the high-z galaxy properties and estimate the budget of ionizing photons. The parameters within L-Galaxies are obtained using a Markov Chain Monte Carlo (MCMC) method with high-z galaxy observations from JWST and other telescopes. We consider two versions of L-Galaxies, with and without dust correction on galaxy UV luminosities. With the best-fit parameters, both L-Galaxies 2015 and L-Galaxies 2020 reproduce well observations of UV luminosity functions, stellar mass functions, star formation rate densities, and ionizing photon emission efficiency. With the assumption of an escape fraction of 20%, all models produce more ionizing photons than the number of hydrogen atoms in the Universe at z > 6. The inclusion of dust correction within MCMC results in higher star formation efficiency, which predicts similar to 50% more ionizing photons, with better consistency between the predicted stellar mass functions and observations.

引用

页数：15

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