Lyman Continuum Leakers at z > 3 in the GOODS-S Field: Starburst or Not?

被引：1
|
作者：
Zhu, Shuairu [1 ,2 ]
Yuan, Fang-Ting [1 ]
Jiang, Chunyan [1 ]
Zheng, Zhen-Ya [1 ,2 ]
Lin, Ruqiu [1 ,2 ]
机构：
[1] Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China
[2] Univ Chinese Acad Sci, Sch Astron & Space Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
来源：
ASTROPHYSICAL JOURNAL LETTERS | 2024年 / 974卷 / 01期
基金：
美国国家科学基金会; 国家重点研发计划; 上海市自然科学基金;
关键词：
STAR-FORMING GALAXIES; ULTRA-DEEP FIELD; STELLAR POPULATION SYNTHESIS; LY-ALPHA EMITTERS; SIMILAR-TO; 3-4; IONIZING-RADIATION; COSMIC REIONIZATION; PHOTOMETRIC REDSHIFTS; SPECTROSCOPIC SURVEY; LUMINOSITY FUNCTION;
D O I：
10.3847/2041-8213/ad7b18
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We investigate the star-forming properties of 23 Lyman continuum (LyC) leakers at z > 3 in the Great Observatories Origins Deep Survey-South field based on a systematic review of LyC observations from the literature. Using data from the Hubble Space Telescope and the James Webb Space Telescope, we construct the spectral energy distributions for these LyC leakers, covering the spectrum from rest-frame ultraviolet to near-infrared. Through the application of a unified modeling approach, we measure the ultraviolet slope (beta), star formation rate, and stellar mass for these LyC leakers in a consistent manner. These high-redshift LyC leakers demonstrate statistically blue UV-continuum slopes (beta), which is consistent with their high escape fraction of LyC photons. We find that these high-redshift LyC leakers span a wide range of specific star formation rate (log (sSFR /yr) from -8.6 to -6.7). Ten of these LyC leakers are located on the star formation main sequence, instead of all being in the starburst mode. The results indicate that intense bursts of star formation are not necessarily required for the leakage of LyC photons for galaxies at z > 3.
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页数：9
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