Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/26846
DC Field | Value | Language |
---|---|---|
dc.contributor.author | BALMAVERDE, Barbara | en_US |
dc.contributor.author | GILLI, Roberto | en_US |
dc.contributor.author | MIGNOLI, Marco | en_US |
dc.contributor.author | BOLZONELLA, MICOL | en_US |
dc.contributor.author | Brusa, M. | en_US |
dc.contributor.author | Cappelluti, N. | en_US |
dc.contributor.author | COMASTRI, Andrea | en_US |
dc.contributor.author | Sani, E. | en_US |
dc.contributor.author | VANZELLA, Eros | en_US |
dc.contributor.author | Vignali, C. | en_US |
dc.contributor.author | Vito, F. | en_US |
dc.contributor.author | Zamorani, G. | en_US |
dc.date.accessioned | 2020-08-26T15:02:44Z | - |
dc.date.available | 2020-08-26T15:02:44Z | - |
dc.date.issued | 2017 | en_US |
dc.identifier.issn | 0004-6361 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/26846 | - |
dc.description.abstract | Many cosmological studies predict that early supermassive black holes (SMBHs) can only form in the most massive dark matter halos embedded within large-scale structures marked by galaxy overdensities that may extend up to 10 physical Mpc. This scenario, however, has not been confirmed observationally, as the search for galaxy overdensities around high-z quasars has returned conflicting results. The field around the z = 6.31 quasar SDSSJ1030+0524 (J1030) is unique for multi-band coverage and represents an excellent data legacy for studying the environment around a primordial SMBH. In this paper we present wide-area ( 25' × 25') Y- and J-band imaging of the J1030 field obtained with the near infrared camera WIRCam at the Canada-France-Hawaii Telescope (CFHT). We built source catalogs in the Y- and J-band, and matched those with our photometric catalog in the r, z, and I bands presented in our previous paper and based on sources with z_AB< 25.2 detected using z-band images from the the Large Binocular Cameras (LBC) at the Large Binocular Telescope (LBT) over the same field of view. We used these new infrared data together with H and K photometric measurements from the MUlti-wavelength Survey by Yale-Chile (MUSYC) and with the Spitzer Infrared Array Camera (IRAC) data to refine our selection of Lyman break galaxies (LBGs), extending our selection criteria to galaxies in the range 25.2 <z_AB< 25.7. We selected 21 robust high redshift candidates in the J1030 field with photometric redshift z~6 and colors I-z ≥ 1.3. We found a significant asymmetry in the distribution of the high redshift galaxies in J1030, supporting the existence of a coherent large-scale structure around the quasar. We estimated an overdensity of z 6 galaxies in the field of δ = 2.4, which is significant at >4σ. The overdensity value and its significance are higher than those found in our previous paper and we interpret this as evidence of an improved LBG selection. | en_US |
dc.language.iso | eng | en_US |
dc.title | Primordial environment of supermassive black holes. II. Deep Y- and J-band images around the z~6.3 quasar SDSS J1030+0524 | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1051/0004-6361/201730683 | en_US |
dc.identifier.scopus | 2-s2.0-85030674733 | en_US |
dc.identifier.isi | 000412875500001 | en_US |
dc.identifier.url | https://www.aanda.org/articles/aa/abs/2017/10/aa30683-17/aa30683-17.html | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 606 | en_US |
dc.relation.firstpage | A23 | en_US |
dc.relation.numberofpages | 27 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.numberofauthors | 12 | en_US |
dc.description.international | sì | en_US |
dc.contributor.country | ITA | en_US |
dc.contributor.country | USA | 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...606A..23B | 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. Torino | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.orcid | 0000-0002-0690-0638 | - |
crisitem.author.orcid | 0000-0001-8121-6177 | - |
crisitem.author.orcid | 0000-0002-9087-2835 | - |
crisitem.author.orcid | 0000-0003-3278-4607 | - |
crisitem.author.orcid | 0000-0003-3451-9970 | - |
crisitem.author.orcid | 0000-0002-5057-135X | - |
crisitem.journal.journalissn | 0004-6361 | - |
crisitem.journal.ance | E016240 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
aa30683-17_compressed.pdf | pdf editoriale | 3.26 MB | Adobe PDF | View/Open |
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