Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/28644
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Novak, Mladen | en_US |
dc.contributor.author | Bañados, Eduardo | en_US |
dc.contributor.author | DECARLI, ROBERTO | en_US |
dc.contributor.author | Walter, Fabian | en_US |
dc.contributor.author | Venemans, Bram | en_US |
dc.contributor.author | Neeleman, Marcel | en_US |
dc.contributor.author | Farina, Emanuele Paolo | en_US |
dc.contributor.author | Mazzucchelli, Chiara | en_US |
dc.contributor.author | Carilli, Chris | en_US |
dc.contributor.author | Fan, Xiaohui | en_US |
dc.contributor.author | Rix, Hans─Walter | en_US |
dc.contributor.author | Wang, Feige | en_US |
dc.date.accessioned | 2020-12-03T11:51:57Z | - |
dc.date.available | 2020-12-03T11:51:57Z | - |
dc.date.issued | 2019 | en_US |
dc.identifier.issn | 0004-637X | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/28644 | - |
dc.description.abstract | We use Atacama Large Millimeter Array observations of the host galaxy of the quasar ULAS J1342+0928 at z = 7.54, to study the dust continuum and far-infrared lines emitted from its interstellar medium (ISM). The Rayleigh-Jeans tail of the dust continuum is well sampled with eight different spectral setups, and from a modified blackbody fit we obtain an emissivity coefficient of β = 1.85 ± 0.3. Assuming a standard dust temperature of 47 K we derive a dust mass of M <SUB>dust</SUB> = 0.35 × 10<SUP>8</SUP> M <SUB>☉</SUB> and a star formation rate of 150+/- 30 {M}<SUB>☉ </SUB> {yr}}<SUP>-1</SUP>. We have >4σ detections of the {[{{C}}{{II}}]}<SUB>158μ {{m</SUB>}}, {[{{O}}{{III}}]}<SUB>88μ {{m</SUB>}}, and {[{{N}}{{II}}]}<SUB>205μ {{m</SUB>}} atomic fine structure lines and limits on the {[{{C}}{{I}}]}<SUB>369μ {{m</SUB>}}, {[{{O}}{{I}}]}<SUB>146μ {{m</SUB>}}, and {[{{N}}{{II}}]}<SUB>205μ {{m</SUB>}} emission. We also report multiple limits of CO rotational lines with J <SUB>up</SUB> ≥ 7, as well as a tentative 3.3σ detection of the stack of four CO lines (J <SUB>up</SUB> = 11, 10, 8, and 7). We find line deficits that are in agreement with local ultra-luminous infrared galaxies. Comparison of the {[{{N}}{{II}}]}<SUB>205μ {{m</SUB>}} and {[{{C}}{{II}}]}<SUB>158μ {{m</SUB>}} lines indicates that the {[{{C}}{{II}}]}<SUB>158μ {{m</SUB>}} emission arises predominantly from the neutral medium, and we estimate that the photodisassociation regions in J1342+0928 have densities ≲5 × 10<SUP>4</SUP> cm<SUP>-3</SUP>. The data suggest that ∼16% of hydrogen is in ionized form and that the H II regions have high electron densities of n <SUB> e </SUB> > 180 cm<SUP>-3</SUP>. Our observations favor a low gas-to-dust ratio of <100, and a metallicity of the ISM comparable to the solar value. All the measurements presented here suggest that the host galaxy of J1342+0928 is highly enriched in metal and dust, despite being observed just 680 Myr after the big bang. | en_US |
dc.language.iso | eng | en_US |
dc.title | An ALMA Multiline Survey of the Interstellar Medium of the Redshift 7.5 Quasar Host Galaxy J1342+0928 | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.3847/1538-4357/ab2beb | en_US |
dc.identifier.scopus | 2-s2.0-85071986614 | en_US |
dc.identifier.isi | 000481694500009 | en_US |
dc.identifier.url | https://iopscience.iop.org/article/10.3847/1538-4357/ab2beb | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 881 | en_US |
dc.relation.issue | 1 | en_US |
dc.relation.firstpage | 63 | 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 | 2019ApJ...881...63N | 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 | |
---|---|---|---|---|
Novak_2019_ApJ_881_63.pdf | Pdf editoriale | 9.38 MB | Adobe PDF | View/Open |
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