دورية أكاديمية
The dust enrichment of early galaxies in the JWST and ALMA era
| العنوان: | The dust enrichment of early galaxies in the JWST and ALMA era |
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| المؤلفون: | Mauerhofer, Valentin, Dayal, Pratika |
| المصدر: | Mauerhofer , V & Dayal , P 2023 , ' The dust enrichment of early galaxies in the JWST and ALMA era ' , Monthly Notices of the Royal Astronomical Society , vol. 526 , no. 2 , pp. 2196-2209 . https://doi.org/10.1093/mnras/stad2734Test |
| سنة النشر: | 2023 |
| المجموعة: | University of Groningen research database |
| مصطلحات موضوعية: | dust, extinction, galaxies: evolution, galaxies: formation, galaxies: high-redshift, galaxies: luminosity function, mass function |
| الوصف: | Recent observations with the JWST are yielding tantalizing hints of an early population of massive, bright galaxies at z > 10, with Atacama Large Millimeter/submillimeter Array (ALMA) observations indicating significant dust masses as early as z ∼7. To understand the implications of these observations, we use the delphi semi-Analytic model that jointly tracks the assembly of dark matter haloes and their baryons, including the key processes of dust enrichment. Our model employs only two redshift-and mass-independent free parameters (the maximum star formation efficiency and the fraction of supernova energy that couples to gas) that are tuned against all available galaxy data at z ∼5-9 before it is used to make predictions up to z ∼20. Our key results are: (i) the model underpredicts the observed ultraviolet luminosity function (UV LF) at z > 12, observations at z > 16 lie close to, or even above, a 'maximal' model where all available gas is turned into stars; (ii) UV selection would miss 34 per cent of the star formation rate density at z ∼5, decreasing to 17 per cent by z ∼10 for bright galaxies with; (iii) the dust mass (Md) evolves with the stellar mass (M∗) and redshift as log (Md) = 1.194 log (M∗) + 0.0975z-5.433; (iv) the dust temperature increases with stellar mass, ranging between 30 and 33 K for M∗ ∼109-11 M· galaxies at z ∼7. Finally, we predict the far-infrared LF at z ∼5-20, testable with ALMA observations, and caution that spectroscopic redshifts and dust masses must be pinned down before invoking unphysical extrema in galaxy formation models. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| العلاقة: | https://research.rug.nl/en/publications/46f26d33-cb33-42f6-b467-9a4f24212962Test |
| DOI: | 10.1093/mnras/stad2734 |
| الإتاحة: | https://doi.org/10.1093/mnras/stad2734Test https://hdl.handle.net/11370/46f26d33-cb33-42f6-b467-9a4f24212962Test https://research.rug.nl/en/publications/46f26d33-cb33-42f6-b467-9a4f24212962Test https://pure.rug.nl/ws/files/895519750/stad2734.pdfTest http://www.scopus.com/inward/record.url?scp=85174694858&partnerID=8YFLogxKTest |
| حقوق: | info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.72193E6A |
| قاعدة البيانات: | BASE |
| DOI: | 10.1093/mnras/stad2734 |
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