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Mid-IR Luminosity Functions: Inferred Dusty Cosmic Star Formation and Black Hole Accretion Histories from the JWST SMILES
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Mid-IR Luminosity Functions: Inferred Dusty Cosmic Star Formation and Black Hole Accretion Histories from the JWST SMILES

Chih-Teng Ling, Tomotsugu Goto, Seong Jin Kim, Cossas K-W Wu, Amos Y.A. Chen, Ece Kilerci-Eser, Tetsuya Hashimoto 和 Terry Long Phan
Publications of the Astronomical Society of the Pacific, 卷.138(1), 頁.14102
01/01/2026
Web of Science ID: WOS:001655946800001

摘要

<p>Mid-infrared (mid-IR) observations are crucial for understanding galaxy evolution, tracing star formation, and active galactic nuclei (AGN) activity via dust emission. This work presents mid-IR galaxy luminosity functions (LFs) at 0.5 < z < 6, derived from the JWST Systematic Mid-infrared Instrument Legacy Extragalactic Survey (SMILES) program. We combine 8 MIRI bands (5-25 mu m) of SMILES and archival 23-band HST+JWST NIRCam photometry to construct an extensive catalog containing 2813 galaxies with sub-mu Jy level completeness in the mid-IR. We obtain monochromatic (in 5.6, 7.7, 10, 12.8, 15, 18, 21, and 25.5 mu m), LIR, and AGN LFs, with a limiting luminosity down to 10(9.5) L-circle dot at z = 0.5-1.0, similar to 10(10.5) L-circle dot at z = 2.0-4.0, and to similar to 10(11) L-circle dot at z = 4.0-6.0. With the unprecedented sensitivity and resolution of JWST, here we better constrain the faint-end slope and its evolution of the mid-IR LFs, quantifying the dusty cosmic star formation and black hole accretion histories out to z similar to 5. These results provide essential insights to refine our understanding of the obscured star formation and galaxy-AGN co-evolution over cosmic time.</p>

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https://doi.org/10.1088/1538-3873/ae2a6d檢視
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