Polycyclic aromatic hydrocarbon (PAH) luminous galaxies in JWST CEERS data
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| Autori principali: | , , , , , , , , , , , |
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| Natura: | Preprint |
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2024
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| author | Lin, Yu-Wei Wu, Cossas K. -W. Ling, Chih-Teng Goto, Tomotsugu Kim, Seong Jin Kilerci, Ece Hashimoto, Tetsuya Wang, Po-Ya Ho, Simon C. -C. Hsiao, Tiger Yu-Yang Raquel, Bjorn Jasper R. Uno, Yuri |
| author_facet | Lin, Yu-Wei Wu, Cossas K. -W. Ling, Chih-Teng Goto, Tomotsugu Kim, Seong Jin Kilerci, Ece Hashimoto, Tetsuya Wang, Po-Ya Ho, Simon C. -C. Hsiao, Tiger Yu-Yang Raquel, Bjorn Jasper R. Uno, Yuri |
| contents | It has been an unanswered question how many dusty galaxies have been undetected from the state-of-the-art observational surveys. JWST enables us to detect faint IR galaxies that have prominent polycyclic aromatic hydrocarbon (PAH) features in the mid-IR wavelengths. PAH is a valuable tracer of star formation and dust properties in the mid-infrared wavelength. The JWST Cosmic Evolution Early Release Science (CEERS) fields provide us with wavelength coverage from 7.7 to 21 $μ$m using six photometric bands of the mid-infrared instrument (MIRI). We have identified galaxies dominated by mid-IR emission from PAHs, termed PAH galaxies. From our multi-band photometry catalogue, we selected ten PAH galaxies displaying high flux ratios of $\log(S_{15}/S_{10}) > 0.8$. The SED fitting analysis indicates that these galaxies are star-forming galaxies with total IR luminosities of $10^{10}$ $\sim$ $10^{11.5}$ $L_{\odot}$ at z $\sim 1$. The morphology of PAH galaxies does not show any clear signatures of major merging or interaction within the MIRI resolution. The majority of them are on the star-formation main sequence at $z \sim 1$. Our result demonstrates that JWST can detect PAH emissions from normal star-forming galaxies at $z \sim 1$, in addition to ultra-luminous infrared galaxies (ULIRGs) or luminous infrared galaxies (LIRGs). |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_01043 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Polycyclic aromatic hydrocarbon (PAH) luminous galaxies in JWST CEERS data Lin, Yu-Wei Wu, Cossas K. -W. Ling, Chih-Teng Goto, Tomotsugu Kim, Seong Jin Kilerci, Ece Hashimoto, Tetsuya Wang, Po-Ya Ho, Simon C. -C. Hsiao, Tiger Yu-Yang Raquel, Bjorn Jasper R. Uno, Yuri Astrophysics of Galaxies Cosmology and Nongalactic Astrophysics It has been an unanswered question how many dusty galaxies have been undetected from the state-of-the-art observational surveys. JWST enables us to detect faint IR galaxies that have prominent polycyclic aromatic hydrocarbon (PAH) features in the mid-IR wavelengths. PAH is a valuable tracer of star formation and dust properties in the mid-infrared wavelength. The JWST Cosmic Evolution Early Release Science (CEERS) fields provide us with wavelength coverage from 7.7 to 21 $μ$m using six photometric bands of the mid-infrared instrument (MIRI). We have identified galaxies dominated by mid-IR emission from PAHs, termed PAH galaxies. From our multi-band photometry catalogue, we selected ten PAH galaxies displaying high flux ratios of $\log(S_{15}/S_{10}) > 0.8$. The SED fitting analysis indicates that these galaxies are star-forming galaxies with total IR luminosities of $10^{10}$ $\sim$ $10^{11.5}$ $L_{\odot}$ at z $\sim 1$. The morphology of PAH galaxies does not show any clear signatures of major merging or interaction within the MIRI resolution. The majority of them are on the star-formation main sequence at $z \sim 1$. Our result demonstrates that JWST can detect PAH emissions from normal star-forming galaxies at $z \sim 1$, in addition to ultra-luminous infrared galaxies (ULIRGs) or luminous infrared galaxies (LIRGs). |
| title | Polycyclic aromatic hydrocarbon (PAH) luminous galaxies in JWST CEERS data |
| topic | Astrophysics of Galaxies Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2401.01043 |