Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/26262
DC Field | Value | Language |
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dc.contributor.author | DECARLI, ROBERTO | en_US |
dc.contributor.author | Walter, Fabian | en_US |
dc.contributor.author | Aravena, Manuel | en_US |
dc.contributor.author | Carilli, Chris | en_US |
dc.contributor.author | Bouwens, Rychard | en_US |
dc.contributor.author | da Cunha, Elisabete | en_US |
dc.contributor.author | Daddi, Emanuele | en_US |
dc.contributor.author | Elbaz, David | en_US |
dc.contributor.author | Riechers, Dominik | en_US |
dc.contributor.author | Smail, Ian | en_US |
dc.contributor.author | Swinbank, Mark | en_US |
dc.contributor.author | Weiss, Axel | en_US |
dc.contributor.author | Bacon, Roland | en_US |
dc.contributor.author | Bauer, Franz | en_US |
dc.contributor.author | Bell, Eric F. | en_US |
dc.contributor.author | Bertoldi, Frank | en_US |
dc.contributor.author | Chapman, Scott | en_US |
dc.contributor.author | Colina, Luis | en_US |
dc.contributor.author | Cortes, Paulo C. | en_US |
dc.contributor.author | Cox, Pierre | en_US |
dc.contributor.author | Gónzalez-López, Jorge | en_US |
dc.contributor.author | Inami, Hanae | en_US |
dc.contributor.author | Ivison, Rob | en_US |
dc.contributor.author | Hodge, Jacqueline | en_US |
dc.contributor.author | Karim, Alex | en_US |
dc.contributor.author | Magnelli, Benjamin | en_US |
dc.contributor.author | Ota, Kazuaki | en_US |
dc.contributor.author | Popping, Gergö | en_US |
dc.contributor.author | Rix, Hans-Walter | en_US |
dc.contributor.author | Sargent, Mark | en_US |
dc.contributor.author | VAN DER WEL, ARJEN | en_US |
dc.contributor.author | van der Werf, Paul | en_US |
dc.date.accessioned | 2020-06-29T09:59:06Z | - |
dc.date.available | 2020-06-29T09:59:06Z | - |
dc.date.issued | 2016 | en_US |
dc.identifier.issn | 0004-637X | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/26262 | - |
dc.description.abstract | We study the molecular gas properties of high-z galaxies observed in the ALMA Spectroscopic Survey (ASPECS) that targets an ∼1 arcmin<SUP>2</SUP> region in the Hubble Ultra Deep Field (UDF), a blind survey of CO emission (tracing molecular gas) in the 3 and 1 mm bands. Of a total of 1302 galaxies in the field, 56 have spectroscopic redshifts and correspondingly well-defined physical properties. Among these, 11 have infrared luminosities {L}<SUB>{IR</SUB>}\gt {10}<SUP>11</SUP> {L}<SUB>☉ </SUB>, I.e., a detection in CO emission was expected. Out of these, 7 are detected at various significance in CO, and 4 are undetected in CO emission. In the CO-detected sources, we find CO excitation conditions that are lower than those typically found in starburst/sub-mm galaxy/QSO environments. We use the CO luminosities (including limits for non-detections) to derive molecular gas masses. We discuss our findings in the context of previous molecular gas observations at high redshift (star formation law, gas depletion times, gas fractions): the CO-detected galaxies in the UDF tend to reside on the low-{L}<SUB>{IR</SUB>} envelope of the scatter in the {L}<SUB>{IR</SUB>}{--}{L}<SUB>{CO</SUB>}<SUP>\prime </SUP> relation, but exceptions exist. For the CO-detected sources, we find an average depletion time of ∼1 Gyr, with significant scatter. The average molecular-to-stellar mass ratio ({M}<SUB>{{H</SUB>}2}/M <SUB>*</SUB>) is consistent with earlier measurements of main-sequence galaxies at these redshifts, and again shows large variations among sources. In some cases, we also measure dust continuum emission. On average, the dust-based estimates of the molecular gas are a factor ∼2-5× smaller than those based on CO. When we account for detections as well as non-detections, we find large diversity in the molecular gas properties of the high-redshift galaxies covered by ASPECS. | en_US |
dc.language.iso | eng | en_US |
dc.title | The ALMA Spectroscopic Survey in the Hubble Ultra Deep Field: Molecular Gas Reservoirs in High-redshift Galaxies | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.3847/1538-4357/833/1/70 | en_US |
dc.identifier.scopus | 2-s2.0-85006511879 | en_US |
dc.identifier.url | https://iopscience.iop.org/article/10.3847/1538-4357/833/1/70 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 833 | en_US |
dc.relation.issue | 1 | en_US |
dc.relation.firstpage | 70 | 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 | 2016ApJ...833...70D | 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.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.openairetype | Article | - |
item.languageiso639-1 | en | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.orcid | 0000-0002-2662-8803 | - |
crisitem.journal.journalissn | 0004-637X | - |
crisitem.journal.ance | E016252 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Decarli_2016_ApJ_833_70.pdf | Pdf editoriale | 4.08 MB | Adobe PDF | View/Open |
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