Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/29986
Campo DC | Valore | Lingua |
---|---|---|
dc.contributor.author | Carniani, S. | en_US |
dc.contributor.author | Maiolino, R. | en_US |
dc.contributor.author | Pallottini, A. | en_US |
dc.contributor.author | Vallini, L. | en_US |
dc.contributor.author | Pentericci, L. | en_US |
dc.contributor.author | Ferrara, A. | en_US |
dc.contributor.author | CASTELLANO, MARCO | en_US |
dc.contributor.author | VANZELLA, Eros | en_US |
dc.contributor.author | GRAZIAN, Andrea | en_US |
dc.contributor.author | Gallerani, S. | en_US |
dc.contributor.author | SANTINI, Paola | en_US |
dc.contributor.author | Wagg, J. | en_US |
dc.contributor.author | FONTANA, Adriano | en_US |
dc.date.accessioned | 2021-01-25T17:24:30Z | - |
dc.date.available | 2021-01-25T17:24:30Z | - |
dc.date.issued | 2017 | en_US |
dc.identifier.issn | 0004-6361 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/29986 | - |
dc.description.abstract | We present new ALMA observations of the [O III]88 μm line and high angular resolution observations of the [C II]158 μm line in a normal star forming galaxy at z = 7.1. Previous [C II] observations of this galaxy had detected [C II] emission consistent with the Lyα redshift but spatially slightly offset relative to the optical (UV-rest frame) emission. The new [C II] observations reveal that the [C II] emission is partly clumpy and partly diffuse on scales larger than about 1 kpc. [O III] emission is also detected at high significance, offset relative to the optical counterpart in the same direction as the [C II] clumps, but mostly not overlapping with the bulk of the [C II] emission. The offset between different emission components (optical/UV and different far-IR tracers) is similar to that which is observed in much more powerful starbursts at high redshift. We show that the [O III] emitting clump cannot be explained in terms of diffuse gas excited by the UV radiation emitted by the optical galaxy, but it requires excitation by in-situ (slightly dust obscured) star formation, at a rate of about 7 M<SUB>☉</SUB> yr<SUP>-1</SUP>. Within 20 kpc from the optical galaxy the ALMA data reveal two additional [O III] emitting systems, which must be star forming companions. We discuss that the complex properties revealed by ALMA in the z 7.1 galaxy are consistent with expectations by recent models and cosmological simulations, in which differential dust extinction, differential excitation and different metal enrichment levels, associated with different subsystems assembling a galaxy, are responsible for the various appearance of the system when observed with distinct tracers. | en_US |
dc.language.iso | eng | en_US |
dc.title | Extended ionised and clumpy gas in a normal galaxy at z = 7.1 revealed by ALMA | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1051/0004-6361/201630366 | en_US |
dc.identifier.scopus | 2-s2.0-85028950442 | en_US |
dc.identifier.isi | 000412231200031 | en_US |
dc.identifier.url | https://www.aanda.org/articles/aa/full_html/2017/09/aa30366-16/aa30366-16.html | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 605 | en_US |
dc.relation.firstpage | A42 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.international | sì | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | ASTRONOMY & ASTROPHYSICS | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2017A&A...605A..42C | 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::PE9_6 Stars and stellar systems | 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 | O.A. Roma | - |
crisitem.author.dept | O.A. Roma | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.dept | O.A. Padova | - |
crisitem.author.dept | O.A. Roma | - |
crisitem.author.dept | O.A. Roma | - |
crisitem.author.orcid | 0000-0001-8940-6768 | - |
crisitem.author.orcid | 0000-0001-9875-8263 | - |
crisitem.author.orcid | 0000-0002-5057-135X | - |
crisitem.author.orcid | 0000-0002-5688-0663 | - |
crisitem.author.orcid | 0000-0002-9334-8705 | - |
crisitem.author.orcid | 0000-0003-3820-2823 | - |
crisitem.journal.journalissn | 0004-6361 | - |
crisitem.journal.ance | E016240 | - |
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1701.03468.pdf | 2.43 MB | Adobe PDF | Visualizza/apri | |
aa30366-16.pdf | Pdf editoriale | 2.55 MB | Adobe PDF | Visualizza/apri |
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