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http://hdl.handle.net/2289/8404| Title: | Dust at the Cosmic Dawn |
| Authors: | Shchekinov, Yuri A. Nath, Biman B. |
| Keywords: | first galaxies cosmology high redchift evolution galaxies extinction dust |
| Issue Date: | 23-May-2025 |
| Publisher: | MDPI |
| Citation: | Galaxies, 2025, Vol. 13, p64 |
| Abstract: | Observations provided by the Hubble Space Telescope (HST) and James Webb Space Telescope (JWST) have revealed a surprising abundance of galaxies at the “cosmic dawn” epoch, 𝑧>7. Some of them are found even in a more distant universe at z ≃ 14–16. Most of these galaxies appear to be intriguing: they are found to be either super-bright in the rest-frame ultraviolet (UV) band or super-dusty with a heavily reddened stellar population. The transition from the super-bright and super-dusty regimes seems to occur in the redshift range from z∼10.5 to z∼9.5 within a time range of ∼50 Myr. If confirmed, then the origin of this transition is far from being clear. In the review, we discuss possible mechanisms that can make 𝑧>10 galaxies free of dust and also explain the origin of apparently excessive dust in galaxies at intermediate and lower redshifts 𝑧<10. |
| Description: | Open Access |
| URI: | http://hdl.handle.net/2289/8404 |
| Alternative Location: | https://doi.org/10.3390/galaxies13030064 |
| Copyright: | 2025 The Author(s) |
| Appears in Collections: | Research Papers (A&A) |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 2025_Galaxies_Vol.13_p64.pdf | Open Access | 2.52 MB | Adobe PDF | View/Open |
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