The Host Galaxy of the Hyperactive Repeating FRB 20240114A: Behind a Galaxy Cluster

被引：4

作者：

Chen, Xiang-Lei ^{[1
,2
]}

Tsai, Chao-Wei ^{[1
,3
,4
]}

Li, Di ^{[1
,5
]}

Wang, Pei ^{[1
,3
]}

Feng, Yi ^{[6
,7
]}

Zhang, Jun-Shuo ^{[1
,4
]}

Li, Guo-Dong ^{[1
,4
]}

Zhang, Yong-Kun ^{[1
]}

Bao, Lu-Lu ^{[4
]}

Liao, Mai ^{[1
,8
]}

Zhang, Lu-Dan ^{[1
,4
]}

Zuo, Pei ^{[1
]}

Bao, Dong-Wei ^{[1
]}

Niu, Chen-Hui ^{[9
]}

Luo, Rui ^{[10
]}

Zhu, Wei-Wei ^{[1
,4
]}

Zou, Hu ^{[1
]}

Xue, Sui-Jian ^{[1
]}

Zhang, Bing ^{[11
,12
]}

机构：

[1] Chinese Acad Sci, Natl Astron Observ, 20A Datun Rd, Beijing 650011, Peoples R China

[2] Chinese Acad Sci, Key Lab Radio Astron & Technolgoy, A20 Datun Rd, Beijing 100101, Peoples R China

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

[4] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[5] Tsinghua Univ, Dept Astron, Beijing 100084, Peoples R China

[6] Zhejiang Lab, Res Ctr Astron Comp, Hangzhou 311100, Peoples R China

[7] Zhejiang Univ, Inst Astron, Sch Phys, Hangzhou 310027, Peoples R China

[8] Univ Diego Portales, Av Republ 180, Santiago, Region Metropol, Chile

[9] Cent China Normal Univ, Inst Astrophys, Wuhan 430079, Peoples R China

[10] Guangzhou Univ, Sch Phys & Mat Sci, Dept Astron, Guangzhou 510006, Peoples R China

[11] Univ Nevada, Nevada Ctr Astrophys, Las Vegas, NV 89154 USA

[12] Univ Nevada, Dept Phys & Astron, Las Vegas, NV 89154 USA

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2025年 / 980卷 / 02期

基金：

中国国家自然科学基金;

关键词：

FAST RADIO-BURST; STAR-FORMATION HISTORIES; ALL-SKY SURVEY; IONIZED-GAS; DUST ATTENUATION; ELECTRON-DENSITY; LINE GALAXIES; DATA RELEASE; MILKY-WAY; ULTRAVIOLET;

D O I：

10.3847/2041-8213/adadfd

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report on the optical spectroscopic observations of the host galaxy of the hyperactive repeating fast radio burst (FRB) FRB 20240114A. The host galaxy is a dwarf galaxy at a redshift of z = 0.1306 +/- 0.0002. With a rest-frame coverage of 4300-7900 & Aring;, we have detected H alpha, H beta, [O iii] lambda lambda 4959,5007, [N ii]lambda lambda 6548,6583, and [S ii] lambda 6716 emission lines. The emission line ratios suggest that the ionization in the host galaxy is dominated by star formation. The star formation rate (SFR) derived from the H alpha emission line is (0.06 +/- 0.01) M circle dot yr-1, and the spectral energy distribution fitting suggests the lower limit of the SFR(UV) is 0.09 M circle dot yr-1. The stellar mass is (4.0 +/- 1.8) x 108 M circle dot, making the specific SFR logsSFR(H alpha)=-9.17 +/- 0.07yr-1 . The line ratios indicate an upper limit of a metallicity of 12 + log10([O/H]) similar to 8.5. As the nearest dwarf host galaxy with a repeating FRB, the activity of FRB 20240114A and the properties of this host galaxy closely resemble those of FRB 20121102A and FRB 20190520B. The H alpha-traced dispersion measure provided by the ionized gas of the host galaxy has a moderate contribution of similar to 200 pc cm-3, assuming a warm ionized gas. We found that the distributions of the stellar mass versus SFR are significantly different between repeating and one-off FRBs, as determined by the MANOVA test with p = 0.0116.

引用

页数：9

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