The Host Galaxy of the Hyperactive Repeating FRB 20240114A: Behind a Galaxy Cluster
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| Autori principali: | , , , , , , , , , , , , , , , , , , |
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| Natura: | Preprint |
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2025
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| _version_ | 1866913701902155776 |
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| author | Chen, Xiang-Lei Tsai, Chao-Wei Li, Di Wang, Pei Feng, Yi Zhang, Jun-Shuo Li, Guo-Dong Zhang, Yong-Kun Bao, Lu-Lu Liao, Mai Zhang, Lu-Dan Zuo, Pei Bao, Dong-Wei Niu, Chen-Hui Luo, Rui Zhu, Wei-Wei Zou, Hu Xue, Sui-Jian Zhang, Bing |
| author_facet | Chen, Xiang-Lei Tsai, Chao-Wei Li, Di Wang, Pei Feng, Yi Zhang, Jun-Shuo Li, Guo-Dong Zhang, Yong-Kun Bao, Lu-Lu Liao, Mai Zhang, Lu-Dan Zuo, Pei Bao, Dong-Wei Niu, Chen-Hui Luo, Rui Zhu, Wei-Wei Zou, Hu Xue, Sui-Jian Zhang, Bing |
| contents | We report on the optical spectroscopic observations of the host galaxy of the hyperactive repeating fast radio burst, FRB 20240114A. The host galaxy is a dwarf galaxy at a redshift of $z=0.1306\pm0.0002$. With a rest-frame coverage of 4300-7900 Å, we have detected H$\rmα$, H$\rmβ$, [O III]$λλ$4959,5007, [N II]$λλ$6548,6583, and [S II]$λ$6716 emission lines. The emission line ratios suggest that the ionization in the host galaxy is dominated by star formation. The star formation rate (SFR) derived from the H$\rmα$ emission line is $(0.06 \pm 0.01) \ \rm{M_{\odot} \ yr^{-1}}$, and the SED fitting suggests the lower limit of the SFR(UV) is $0.09 \ \rm{M_{\odot} \ yr^{-1}}$. The stellar mass is $(\rm 4.0 \pm 1.8) \times 10^8 \ M_{\odot}$, making the specific star formation rate $\rm log \ sSFR(H\rm α) = -9.8 \pm 0.2 \ yr^{-1}$. The line ratios indicate an upper limit of a metallicity of $\rm 12+log_{10} ([O/H]) \sim 8.5$. 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$\rmα$-traced dispersion measure (DM) provided by the ionized gas of the host galaxy has a moderate contribution of $\sim 200 \rm \ pc \ cm^{-3}$, 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 $p=0.0116$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_05587 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | The Host Galaxy of the Hyperactive Repeating FRB 20240114A: Behind a Galaxy Cluster Chen, Xiang-Lei Tsai, Chao-Wei Li, Di Wang, Pei Feng, Yi Zhang, Jun-Shuo Li, Guo-Dong Zhang, Yong-Kun Bao, Lu-Lu Liao, Mai Zhang, Lu-Dan Zuo, Pei Bao, Dong-Wei Niu, Chen-Hui Luo, Rui Zhu, Wei-Wei Zou, Hu Xue, Sui-Jian Zhang, Bing Astrophysics of Galaxies We report on the optical spectroscopic observations of the host galaxy of the hyperactive repeating fast radio burst, FRB 20240114A. The host galaxy is a dwarf galaxy at a redshift of $z=0.1306\pm0.0002$. With a rest-frame coverage of 4300-7900 Å, we have detected H$\rmα$, H$\rmβ$, [O III]$λλ$4959,5007, [N II]$λλ$6548,6583, and [S II]$λ$6716 emission lines. The emission line ratios suggest that the ionization in the host galaxy is dominated by star formation. The star formation rate (SFR) derived from the H$\rmα$ emission line is $(0.06 \pm 0.01) \ \rm{M_{\odot} \ yr^{-1}}$, and the SED fitting suggests the lower limit of the SFR(UV) is $0.09 \ \rm{M_{\odot} \ yr^{-1}}$. The stellar mass is $(\rm 4.0 \pm 1.8) \times 10^8 \ M_{\odot}$, making the specific star formation rate $\rm log \ sSFR(H\rm α) = -9.8 \pm 0.2 \ yr^{-1}$. The line ratios indicate an upper limit of a metallicity of $\rm 12+log_{10} ([O/H]) \sim 8.5$. 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$\rmα$-traced dispersion measure (DM) provided by the ionized gas of the host galaxy has a moderate contribution of $\sim 200 \rm \ pc \ cm^{-3}$, 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 $p=0.0116$. |
| title | The Host Galaxy of the Hyperactive Repeating FRB 20240114A: Behind a Galaxy Cluster |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2502.05587 |