Interpreting ALMA non-detections of JWST super-early galaxies
| Autor: | M Kohandel, A Ferrara, A Pallottini, L Vallini, L Sommovigo, F Ziparo |
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| Přispěvatelé: | Kohandel, Mahsa, Ferrara, Andrea, Pallottini, Andrea, Vallini, Livia, Sommovigo, Laura, Ziparo, Francesco |
| Rok vydání: | 2022 |
| Předmět: |
numerical
galaxies: evolution galaxies: formation galaxies: high-redshift galaxies: ISM infrared: general [methods] Cosmology and Nongalactic Astrophysics (astro-ph.CO) Settore FIS/05 - Astronomia e Astrofisica Space and Planetary Science Astrophysics of Galaxies (astro-ph.GA) FOS: Physical sciences Astronomy and Astrophysics Astrophysics - Astrophysics of Galaxies Astrophysics - Cosmology and Nongalactic Astrophysics |
| Zdroj: | Monthly Notices of the Royal Astronomical Society: Letters. 520:L16-L20 |
| ISSN: | 1745-3933 1745-3925 |
| DOI: | 10.1093/mnrasl/slac166 |
| Popis: | Recent attempts to detect [OIII] 88$μ$m emission from super-early ($z>10$) galaxy candidates observed by JWST have been unsuccessful. By using zoom-in simulations, we show that these galaxies are faint, and mostly fall below the local metal-poor $\rm [OIII]-SFR$ relation as a result of their low ionization parameter, $U_{\rm ion}\lesssim 10^{-3}$. Such low $U_{\rm ion}$ values are found in galaxies that are in an early assembly stage, and whose stars are still embedded in high-density natal clouds. However, the most luminous galaxy in our sample ($\rm{log}[L_{\rm{[OIII]}}/L_\odot] = 8.4$, $U_{\rm ion} \approx 0.1$) could be detected by ALMA in only $2.8$ hrs. 6 pages, 3 figures, Submitted to MNRAS (comments are welcome) |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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