Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/29851
Campo DC | Valore | Lingua |
---|---|---|
dc.contributor.author | DECARLI, ROBERTO | - |
dc.contributor.author | MIGNOLI, Marco | - |
dc.contributor.author | GILLI, Roberto | - |
dc.contributor.author | BALMAVERDE, Barbara | - |
dc.contributor.author | Brusa, Marcella | - |
dc.contributor.author | CAPPELLUTI, Nico | - |
dc.contributor.author | COMASTRI, Andrea | - |
dc.contributor.author | NANNI, RICCARDO | - |
dc.contributor.author | PECA, ALESSANDRO | - |
dc.contributor.author | PENSABENE, ANTONIO | - |
dc.contributor.author | VANZELLA, Eros | - |
dc.contributor.author | VIGNALI, CRISTIAN | - |
dc.date.accessioned | 2021-01-19T14:26:01Z | - |
dc.date.available | 2021-01-19T14:26:01Z | - |
dc.date.issued | 2019 | - |
dc.identifier.issn | 0004-6361 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/29851 | - |
dc.description.abstract | State-of-the-art models of massive black hole formation postulate that quasars at $z>6$ reside in extreme peaks of the cosmic density structure in the early universe. Even so, direct observational evidence of these overdensities is elusive, especially on large scales ($\gg$1 Mpc) as the spectroscopic follow-up of $z>6$ galaxies is observationally expensive. Here we present Keck / DEIMOS optical and IRAM / NOEMA millimeter spectroscopy of a $z\sim6$ Lyman-break galaxy candidate originally discovered via broadband selection, at a projected separation of 4.65 physical Mpc (13.94 arcmin) from the luminous $z$=6.308 quasar J1030+0524. This well-studied field presents the strongest indication to date of a large-scale overdensity around a $z>6$ quasar. The Keck observations suggest a $z\sim6.3$ dropout identification of the galaxy. The NOEMA 1.2mm spectrum shows a 3.5$\sigma$ line that, if interpreted as [CII], would place the galaxy at $z$=6.318 (i.e., at a line-of-sight separation of 3.9 comoving Mpc assuming that relative proper motion is negligible). The measured [CII] luminosity is $3\times10^8$ L$_\odot$, in line with expectations for a galaxy with a star formation rate $\sim15$ M$_\odot$ yr$^{-1}$, as inferred from the rest-frame UV photometry. Our combined observations place the galaxy at the same redshift as the quasar, thus strengthening the overdensity scenario for this $z>6$ quasar. This pilot experiment demonstrates the power of millimeter-wavelength observations in the characterization of the environment of early quasars. | - |
dc.language.iso | eng | - |
dc.title | Testing the paradigm: First spectroscopic evidence of a quasar-galaxy Mpc-scale association at cosmic dawn | - |
dc.type | Article | - |
dc.identifier.doi | 10.1051/0004-6361/201936813 | - |
dc.identifier.scopus | 2-s2.0-85077306520 | - |
dc.identifier.isi | 000499098500001 | - |
dc.identifier.url | http://arxiv.org/abs/1910.12887v1 | - |
dc.identifier.url | https://www.aanda.org/articles/aa/full_html/2019/11/aa36813-19/aa36813-19.html | - |
dc.relation.medium | STAMPA | - |
dc.relation.volume | 631 | - |
dc.relation.firstpage | L10 | - |
dc.relation.lastpage | 1 | - |
dc.relation.numberofpages | 5 | - |
dc.type.referee | REF_1 | - |
dc.description.numberofauthors | 12 | - |
dc.description.international | sì | - |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | - |
dc.relation.journal | ASTRONOMY & ASTROPHYSICS | - |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2019A&A...631L..10D | - |
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 | - |
dc.description.apc | no | - |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegare il file al passo 5-Carica) | - |
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.dept | OAS Bologna | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.dept | O.A. Torino | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.orcid | 0000-0002-2662-8803 | - |
crisitem.author.orcid | 0000-0002-9087-2835 | - |
crisitem.author.orcid | 0000-0001-8121-6177 | - |
crisitem.author.orcid | 0000-0002-0690-0638 | - |
crisitem.author.orcid | 0000-0003-3451-9970 | - |
crisitem.author.orcid | 0000-0001-9815-4953 | - |
crisitem.author.orcid | 0000-0002-5057-135X | - |
crisitem.journal.journalissn | 0004-6361 | - |
crisitem.journal.ance | E016240 | - |
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