Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/24901
Campo DC | Valore | Lingua |
---|---|---|
dc.contributor.author | LaMassa, Stephanie M. | en_US |
dc.contributor.author | Civano, Francesca | en_US |
dc.contributor.author | Brusa, Marcella | en_US |
dc.contributor.author | Stern, Daniel | en_US |
dc.contributor.author | Glikman, Eilat | en_US |
dc.contributor.author | Gallagher, Sarah | en_US |
dc.contributor.author | Urry, C. Meg | en_US |
dc.contributor.author | Cales, Sabrina | en_US |
dc.contributor.author | CAPPELLUTI, Nico | en_US |
dc.contributor.author | Cardamone, Carolin | en_US |
dc.contributor.author | COMASTRI, Andrea | en_US |
dc.contributor.author | Farrah, Duncan | en_US |
dc.contributor.author | Greene, Jenny E. | en_US |
dc.contributor.author | Komossa, S. | en_US |
dc.contributor.author | Merloni, Andrea | en_US |
dc.contributor.author | Mroczkowski, Tony | en_US |
dc.contributor.author | Natarajan, Priyamvada | en_US |
dc.contributor.author | Richards, Gordon | en_US |
dc.contributor.author | Salvato, Mara | en_US |
dc.contributor.author | Schawinski, Kevin | en_US |
dc.contributor.author | Treister, Ezequiel | en_US |
dc.date.accessioned | 2020-05-15T16:35:14Z | - |
dc.date.available | 2020-05-15T16:35:14Z | - |
dc.date.issued | 2016 | en_US |
dc.identifier.issn | 0004-637X | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/24901 | - |
dc.description.abstract | Capitalizing on the all-sky coverage of WISE and the 35% and 50% sky coverage from Sloan Digital Sky Survey and Pan-STARRS, respectively, we explore the efficacy of m<SUB>R</SUB> (optical) - {m}<SUB>3.4μ {{m</SUB>}} (mid-infrared), hereafter R-W1, as a color diagnostic to identify obscured supermassive black hole accretion in wide-area X-ray surveys. We use the ∼16.5 deg<SUP>2</SUP> Stripe 82 X-ray survey data as a test bed to compare R-W1 with R - K, an oft-used obscured active galactic nucleus (AGN) selection criterion, and examine where different classes of objects lie in this parameter space. Most stars follow a well-defined path in R - K versus R-W1 space. We demonstrate that optically normal galaxies hosting X-ray AGNs at redshifts 0.5\lt z\lt 1 can be recovered with an R-W1\gt 4 color cut, while they typically are not selected as AGNs based on their W1-W2 colors. Additionally, different observed X-ray luminosity bins favor different regions in R-W1 parameter space: moderate-luminosity AGNs (10<SUP>43</SUP> erg {{{s}}}<SUP>-1</SUP>\lt {L}<SUB>0.5-10{keV</SUB>}\lt {10}<SUP>44</SUP> erg s<SUP>-1</SUP>) tend to have red colors, while the highest-luminosity AGNs ({L}<SUB>0.5-10{keV</SUB>}\gt {10}<SUP>45</SUP> erg s<SUP>-1</SUP>) have bluer colors; higher spectroscopic completeness of the Stripe 82X sample is needed to determine whether this is a selection effect or an intrinsic property. Finally, we parameterize X-ray obscuration of Stripe 82X AGNs by calculating their hardness ratios (HRs) and find no clear trends between HR and optical reddening. Our results will help inform best-effort practices in following up obscured AGN candidates in current and future wide-area, shallow X-ray surveys, including the all-sky eROSITA mission. | en_US |
dc.language.iso | eng | en_US |
dc.title | On R-W1 as A Diagnostic to Discover Obscured Active Galactic Nuclei in Wide-area X-Ray Surveys | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.3847/0004-637X/818/1/88 | en_US |
dc.identifier.scopus | 2-s2.0-84959202462 | en_US |
dc.identifier.isi | 000370370800088 | en_US |
dc.identifier.url | https://iopscience.iop.org/article/10.3847/0004-637X/818/1/88 | en_US |
dc.identifier.url | https://iopscience.iop.org/article/10.3847/0004-637X/818/1/88/pdf | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 818 | en_US |
dc.relation.issue | 1 | en_US |
dc.relation.firstpage | 88 | en_US |
dc.relation.lastpage | 103 | en_US |
dc.relation.numberofpages | 16 | 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...818...88L | 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.orcid | 0000-0003-3451-9970 | - |
crisitem.journal.journalissn | 0004-637X | - |
crisitem.journal.ance | E016252 | - |
È visualizzato nelle collezioni: | 1.01 Articoli in rivista |
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File | Descrizione | Dimensioni | Formato | |
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1511.02883.pdf | postprint | 3.87 MB | Adobe PDF | Visualizza/apri |
LaMassa_2016_ApJ_818_88.pdf | pdf editoriale | 2.07 MB | Adobe PDF | Visualizza/apri |
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