Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/31873
DC Field | Value | Language |
---|---|---|
dc.contributor.author | TOZZI, Paolo | en_US |
dc.contributor.author | PENTERICCI, Laura | en_US |
dc.contributor.author | GILLI, Roberto | en_US |
dc.contributor.author | Pannella, M. | en_US |
dc.contributor.author | FIORE, Fabrizio | en_US |
dc.contributor.author | Miley, G. | en_US |
dc.contributor.author | NONINO, Mario | en_US |
dc.contributor.author | Rottgering, H. J. A. | en_US |
dc.contributor.author | Strazzullo, V. | en_US |
dc.contributor.author | Anderson, C. S. | en_US |
dc.contributor.author | BORGANI, STEFANO | en_US |
dc.contributor.author | Calabro', A. | en_US |
dc.contributor.author | Carilli, C. | en_US |
dc.contributor.author | Dannerbauer, H. | en_US |
dc.contributor.author | Di Mascolo, L. | en_US |
dc.contributor.author | Feruglio, Chiara | en_US |
dc.contributor.author | Gobat, R. | en_US |
dc.contributor.author | Jin, S. | en_US |
dc.contributor.author | Liu, A. | en_US |
dc.contributor.author | Mroczkowski, T. | en_US |
dc.contributor.author | Norman, C. | en_US |
dc.contributor.author | RASIA, ELENA | en_US |
dc.contributor.author | Rosati, P. | en_US |
dc.contributor.author | SARO, ALEXANDRO | en_US |
dc.date.accessioned | 2022-03-24T14:04:57Z | - |
dc.date.available | 2022-03-24T14:04:57Z | - |
dc.date.issued | 2022 | en_US |
dc.identifier.issn | 0004-6361 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/31873 | - |
dc.description.abstract | (Abridged) We present an analysis of the 700 ks Chandra ACIS-S observation of the field around the Spiderweb Galaxy at z=2.156, focusing on the nuclear activity in the associated large-scale environment. We identify unresolved X-ray sources down to flux limits of 1.3X10^{-16} and 3.9X10^{-16} erg/s/cm^2 in the soft and hard band, respectively. We search for counterparts in the optical, NIR and submm bands to identify X-ray sources belonging to the protocluster. We detect 107 X-ray unresolved sources within 5 arcmin (corresponding to 2.5 Mpc) of J1140-2629, among which 13 have optical counterparts with spectroscopic redshift 2.11<z<2.20, and 1 source with photometric redshift consistent with this range. Our X-ray spectral analysis shows that their intrinsic spectral slope is consistent with an average <\Gamma>~1.84+-0.04. The best-fit intrinsic absorption for 5 protocluster X-ray members is N_H>10^{23} cm^{-2}, while other 6 have upper limits of the order of fewX10^{22} cm^{-2}. Two sources can only be fitted with very flat \Gamma<=1, and are therefore considered Compton-thick candidates. Their 0.5-10 keV rest frame luminosities are larger than 2X10^{43} erg/s, significantly greater than X-ray luminosities expected from star formation activity. The X-ray luminosity function of AGN in the volume associated to the Spiderweb protocluster in the range 10^{43}<L_X<10^{44.5} erg/s, is at least 10 times higher than that in the field at the same redshift and significantly flatter. The X-ray AGN fraction is measured to be (25.5+-4.5)% in the stellar mass range log(M*/M_sun)>10.5, corresponding to an enhancement of 6.0^{+9.0}_{-3.0} with respect to the COSMOS field at comparable redshifts and stellar mass range. We conclude that the galaxy population in the Spiderweb Protocluster is characterized by enhanced X-ray nuclear activity triggered by environmental effects on Mpc scales. | en_US |
dc.language.iso | eng | en_US |
dc.title | The 700 ks Chandra Spiderweb Field I: evidence for widespread nuclear activity in the Protocluster | en_US |
dc.type | Article | - |
dc.identifier.url | http://arxiv.org/abs/2203.02208v1 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.international | sì | en_US |
dc.contributor.country | ITA | 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.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 | 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. Arcetri | - |
crisitem.author.dept | O.A. Roma | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.dept | O.A. Trieste | - |
crisitem.author.dept | O.A. Trieste | - |
crisitem.author.dept | O.A. Trieste | - |
crisitem.author.dept | O.A. Trieste | - |
crisitem.author.dept | O.A. Trieste | - |
crisitem.author.dept | O.A. Trieste | - |
crisitem.author.orcid | 0000-0003-3096-9966 | - |
crisitem.author.orcid | 0000-0001-8940-6768 | - |
crisitem.author.orcid | 0000-0001-8121-6177 | - |
crisitem.author.orcid | 0000-0002-4031-4157 | - |
crisitem.author.orcid | 0000-0001-6342-9662 | - |
crisitem.author.orcid | 0000-0001-6151-6439 | - |
crisitem.author.orcid | 0000-0002-4227-6035 | - |
crisitem.author.orcid | 0000-0003-4175-002X | - |
crisitem.author.orcid | 0000-0002-9288-862X | - |
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 | |
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2203.02208.pdf | preprint | 2.87 MB | Adobe PDF | View/Open |
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