Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/24903
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Cappelluti, N. | en_US |
dc.contributor.author | COMASTRI, Andrea | en_US |
dc.contributor.author | FONTANA, Adriano | en_US |
dc.contributor.author | Zamorani, G. | en_US |
dc.contributor.author | Amorin, R. | en_US |
dc.contributor.author | CASTELLANO, MARCO | en_US |
dc.contributor.author | MERLIN, Emiliano | en_US |
dc.contributor.author | SANTINI, Paola | en_US |
dc.contributor.author | Elbaz, D. | en_US |
dc.contributor.author | Schreiber, C. | en_US |
dc.contributor.author | Shu, X. | en_US |
dc.contributor.author | Wang, T. | en_US |
dc.contributor.author | Dunlop, J. S. | en_US |
dc.contributor.author | Bourne, N. | en_US |
dc.contributor.author | Bruce, V. A. | en_US |
dc.contributor.author | Buitrago, F. | en_US |
dc.contributor.author | Michałowski, Michał J. | en_US |
dc.contributor.author | Derriere, S. | en_US |
dc.contributor.author | Ferguson, H. C. | en_US |
dc.contributor.author | Faber, S. M. | en_US |
dc.contributor.author | Vito, F. | en_US |
dc.date.accessioned | 2020-05-15T17:42:38Z | - |
dc.date.available | 2020-05-15T17:42:38Z | - |
dc.date.issued | 2016 | en_US |
dc.identifier.issn | 0004-637X | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/24903 | - |
dc.description.abstract | Improving the capabilities of detecting faint X-ray sources is fundamental for increasing the statistics on faint high-z active galactic nuclei (AGNs) and star-forming galaxies (SFGs). We performed a simultaneous maximum likelihood point-spread function fit in the [0.5-2] keV and [2-7] keV energy bands of the 4 Ms Chandra Deep Field South (CDFS) data at the position of the 34,930 CANDELS H-band selected galaxies. For each detected source we provide X-ray photometry and optical counterpart validation. We validated this technique by means of a ray-tracing simulation. We detected a total of 698 X-ray point sources with a likelihood { L }\gt 4.98 (I.e., >2.7σ). We show that prior knowledge of a deep sample of optical-NIR galaxies leads to a significant increase in the detection of faint (I.e., ∼10<SUP>-17</SUP> cgs in the [0.5-2] keV band) sources with respect to “blind” X-ray detections. By including previous X-ray catalogs, this work increases the total number of X-ray sources detected in the 4 Ms CDFS, CANDELS area to 793, which represents the largest sample of extremely faint X-ray sources assembled to date. Our results suggest that a large fraction of the optical counterparts of our X-ray sources determined by likelihood ratio actually coincides with the priors used for the source detection. Most of the new detected sources are likely SFGs or faint, absorbed AGNs. We identified a few sources with putative photometric redshift z > 4. Despite the low number statistics and the uncertainties on the photo z, this sample significantly increases the number of X-ray-selected candidate high-z AGNs. | en_US |
dc.language.iso | eng | en_US |
dc.title | Chandra Counterparts of CANDELS GOODS-S Sources | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.3847/0004-637X/823/2/95 | en_US |
dc.identifier.scopus | 2-s2.0-84975123011 | en_US |
dc.identifier.isi | 000377410000026 | en_US |
dc.identifier.url | https://iopscience.iop.org/article/10.3847/0004-637X/823/2/95 | en_US |
dc.identifier.url | https://iopscience.iop.org/article/10.3847/0004-637X/823/2/95/pdf | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 823 | en_US |
dc.relation.issue | 2 | en_US |
dc.relation.firstpage | 95 | en_US |
dc.relation.lastpage | 109 | en_US |
dc.relation.numberofpages | 15 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.numberofauthors | 21 | en_US |
dc.description.international | sì | 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 | 2016ApJ...823...95C | en_US |
dc.relation.fund | FP7 | 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 | 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.dept | O.A. Roma | - |
crisitem.author.dept | O.A. Roma | - |
crisitem.author.dept | O.A. Roma | - |
crisitem.author.dept | O.A. Roma | - |
crisitem.author.orcid | 0000-0003-3451-9970 | - |
crisitem.author.orcid | 0000-0003-3820-2823 | - |
crisitem.author.orcid | 0000-0001-9875-8263 | - |
crisitem.author.orcid | 0000-0001-6870-8900 | - |
crisitem.author.orcid | 0000-0002-9334-8705 | - |
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 | |
---|---|---|---|---|
1512.00510.pdf | postprint | 1.45 MB | Adobe PDF | View/Open |
Cappelluti_2016_ApJ_823_95.pdf | pdf editoriale | 2.37 MB | Adobe PDF | View/Open |
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