J/ApJ/920/68ivo://CDS.VizieR/J/ApJ/920/68doi:10.26093/cds/vizier.19200068CDSChang Y.-Y.Hsieh B.-C.Wang W.-H.Lin Y.-T.Lim C.-F.Toba Y.,Zhong Y.,Chang S.-Y.2023-09-27T10:27:01Z2023-02-28T07:51:36ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.fractive-galactic-nucleiinfrared-photometryvisible-astronomyphotometryWe investigate the performance of machine-learning techniques in classifying active galactic nuclei (AGNs), including X-ray-selected AGNs (XAGNs), infrared-selected AGNs (IRAGNs), and radio-selected AGNs (RAGNs). Using the known physical parameters in the Cosmic Evolution Survey (COSMOS) field, we are able to create quality training samples in the region of the Hyper Suprime-Cam (HSC) survey. We compare several Python packages (e.g., scikit- learn, Keras, and XGBoost) and use XGBoost to identify AGNs and show the performance (e.g., accuracy, precision, recall, F1 score, and AUROC). Our results indicate that the performance is high for bright XAGN and IRAGN host galaxies. The combination of the HSC (optical) information with the Wide-field Infrared Survey Explorer band 1 and band 2 (near-infrared) information performs well to identify AGN hosts. For both type 1 (broad-line) XAGNs and type 1 (unobscured) IRAGNs, the performance is very good by using optical-to-infrared information. These results can apply to the five-band data from the wide regions of the HSC survey and future all-sky surveys.2021ApJ...920...68Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/920/68CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/640/167 : AGNs and ULIRGs in the CDF-South (Alonso-Herrero+, 2006)J/A+A/451/457 : X-ray properties of AGN in CDFS (Tozzi+, 2006)J/MNRAS/391/369 : New z>=3.6 QSOs from FIRST-SDSS DR5 (Carballo+, 2008)J/ApJ/690/1236 : COSMOS photometric redshift catalog (Ilbert+, 2009)J/ApJ/728/58 : Swift-BAT survey of AGNs (Burlon+, 2011)J/AJ/141/189 : Classifiers for star/galaxy separation (Vasconcellos+, 2011)J/MNRAS/421/1569 : Properties of 18286 SDSS radio galaxies (Best+, 2012)J/MNRAS/437/968 : AGN automatic photometric classification (Cavuoti+, 2014)J/ApJ/782/41 : 231 AGN candidates from the 2FGL catalog (Doert+, 2014)J/ApJS/219/8 : SFR for WISE + SDSS spectroscopic galaxies (Chang+, 2015)J/ApJ/806/110 : ALESS survey; SMGs in the ECDF-S data (da Cunha+, 2015)J/ApJ/819/62 : The COSMOS-Legacy Survey (CLS) catalog (Civano+, 2016)J/ApJS/224/24 : The COSMOS2015 catalog (Laigle+, 2016)J/ApJ/817/34 : C-COSMOS Legacy multiwavelength catalog (Marchesi+, 2016)J/MNRAS/457/110 : Northern XMM-XXL field AGN catalog (Menzel+, 2016)J/ApJ/820/8 : 3FGL sources stat. classifications (Saz Parkinson+, 2016)J/MNRAS/476/3661 : Morphology of SDSS galaxies (Dominguez+, 2018)J/A+A/619/A14 : Classification-aided zph estimation (Fotopoulou+, 2018)J/A+A/611/A97 : Photo. quasar candidates in Stripe 82 (Pasquet-Itam+, 2018)J/ApJS/243/15 : WERGS. II. SED fitting optical, IR & radio (Toba+, 2019)J/A+A/651/A108 : AGN catalog from AKARI NEP Wide field (Poliszczuk+, 2021)http://hsc.mtk.nao.ac.jp/ssp : HyperSuprimeCam Subaru Strategic Prog Public DR2https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/920/68https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/920/68http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/920/68https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/920/68https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/920/68http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/920/68GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/920/68/table7 (AGN candidates in HSC-Wide region for 112609 objects)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/920/68/table7?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/920/68/table7?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/920/68/table7?GETtext/xml+votable180.050000true149.459941.737130.0055555555555555565/6814 6/27245 27247 27250 27262 27344-27345 27347-27348https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/920/68?format=asciiOpticalInfrareddefaultJ/ApJ/920/68/table7AGN candidates in HSC-Wide region for 112609 objectsIRAGN[0/1] 1: Infrared selected AGNs predicted by MLstat.paramintRAGN[0/1] 1: Radio selected AGNs predicted by MLstat.paramXAGNp[0.009/0.97] Probability of X-ray selected AGNsstat.probabilitydoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDobjid in HSC-SSP PDR2 (1)meta.id;meta.mainRAJ2000[149/152] Right ascension HSC-SSP PDR2 (J2000) (1)degpos.eq.ra;meta.mainindexedDEJ2000[1/4] declination in HSC-SSP PDR2 (J2000) (1)degpos.eq.dec;meta.mainindexedXAGN[0/1] 1: X-ray selected AGNs predicted by MLstat.paramintIRAGNp[0.01/0.97] Probability of Infrared selected AGNsstat.probabilitydoubleRAGNp[0.01/0.91] Probability of Radio selected AGNsstat.probability