Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/32100
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Boogaard, Leindert A. | en_US |
dc.contributor.author | Bouwens, Rychard J. | en_US |
dc.contributor.author | Riechers, Dominik | en_US |
dc.contributor.author | Van Der Werf, Paul | en_US |
dc.contributor.author | Bacon, Roland | en_US |
dc.contributor.author | Matthee, Jorryt | en_US |
dc.contributor.author | Stefanon, Mauro | en_US |
dc.contributor.author | FELTRE, ANNA | en_US |
dc.contributor.author | Maseda, Michael | en_US |
dc.contributor.author | Inami, Hanae | en_US |
dc.contributor.author | Aravena, Manuel | en_US |
dc.contributor.author | Brinchmann, Jarle | en_US |
dc.contributor.author | Carilli, Chris | en_US |
dc.contributor.author | Contini, Thierry | en_US |
dc.contributor.author | DECARLI, ROBERTO | en_US |
dc.contributor.author | González-López, Jorge | en_US |
dc.contributor.author | Nanayakkara, Themiya | en_US |
dc.contributor.author | Walter, Fabian | en_US |
dc.date.accessioned | 2022-05-27T14:45:28Z | - |
dc.date.available | 2022-05-27T14:45:28Z | - |
dc.date.issued | 2021 | en_US |
dc.identifier.issn | 0004-637X | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/32100 | - |
dc.description.abstract | We study the molecular gas content of 24 star-forming galaxies at z = 3-4, with a median stellar mass of 109.1 M o˙, from the MUSE Hubble Ultra Deep Field (HUDF) Survey. Selected by their Lyα λ1216 emission and H F160W-band magnitude, the galaxies show an average Å, below the typical selection threshold for Lyα emitters (Å), and a rest-frame UV spectrum similar to Lyman-break galaxies. We use rest-frame optical spectroscopy from KMOS and MOSFIRE, and the UV features observed with MUSE, to determine the systemic redshifts, which are offset from Lyα by Δv(Lyα) = 346 km s-1, with a 100 to 600 km s-1 range. Stacking 12CO J = 4 → 3 and [C i]3P1 → 3P0 (and higher-J CO lines) from the ALMA Spectroscopic Survey of the HUDF, we determine 3σ upper limits on the line luminosities of 4.0 108 K km s-1pc2 and 5.6 108 K km s-1pc2, respectively (for a 300 km s-1 line width). Stacking the 1.2 mm and 3 mm dust-continuum flux densities, we find a 3σ upper limits of 9 μJy and 1.2 μJy, respectively. The inferred gas fractions, under the assumption of a "Galactic"CO-to-H2 conversion factor and gas-to-dust ratio, are in tension with previously determined scaling relations. This implies a substantially higher α CO ≥ 10 and δ GDR ≥ 1200, consistent with the subsolar metallicity estimated for these galaxies (). The low metallicity of z ≥ 3 star-forming galaxies may thus make it very challenging to unveil their cold gas through CO or dust emission, warranting further exploration of alternative tracers, such as [C ii]. | en_US |
dc.language.iso | eng | en_US |
dc.title | Measuring the Average Molecular Gas Content of Star-forming Galaxies at z = 3-4 | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.3847/1538-4357/ac01d7 | en_US |
dc.identifier.scopus | 2-s2.0-85112596395 | en_US |
dc.identifier.url | https://api.elsevier.com/content/abstract/scopus_id/85112596395 | en_US |
dc.identifier.url | https://iopscience.iop.org/article/10.3847/1538-4357/ac01d7 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 916 | en_US |
dc.relation.issue | 1 | en_US |
dc.relation.firstpage | 12 | en_US |
dc.type.referee | REF_1 | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | THE ASTROPHYSICAL JOURNAL | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2021ApJ...916...12B | en_US |
dc.relation.ercsector | ERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation | en_US |
dc.description.apc | no | en_US |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegare il file al passo 5-Carica) | en_US |
item.grantfulltext | open | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
item.languageiso639-1 | en | - |
item.openairetype | Article | - |
item.cerifentitytype | Publications | - |
crisitem.journal.journalissn | 0004-637X | - |
crisitem.journal.ance | E016252 | - |
crisitem.author.dept | O.A. Arcetri | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.orcid | 0000-0001-6865-2871 | - |
crisitem.author.orcid | 0000-0002-2662-8803 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
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Boogaard_2021_ApJ_916_12.pdf | PDF editoriale | 4.44 MB | Adobe PDF | View/Open |
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