J/ApJ/814/11ivo://CDS.VizieR/J/ApJ/814/11doi:10.26093/cds/vizier.18140011CDSTerashima Y.Hirata Y.Awaki H.Oyabu S.Gandhi P.Toba Y.,Matsuhara H.2017-06-21T08:23:00Z2016-03-22T14:07:47ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleix-ray-sourcesgalaxiesinfrared-sourcessurveysredshiftedastronomical-object-identificationWe report a new sample of obscured active galactic nuclei (AGNs) selected from the XMM-Newton serendipitous source and AKARI point-source catalogs. We match X-ray sources with infrared (18 and 90{mu}m) sources located at |b|>10{deg} to create a sample consisting of 173 objects. Their optical classifications and absorption column densities measured by X-ray spectra are compiled and study efficient selection criteria to find obscured AGNs. We apply the criteria (1) X-ray hardness ratio defined by using the 2-4.5keV and 4.5-12keV bands >-0.1 and (2) EPIC-PN count rate (CR) in the 0.2-12keV to infrared flux ratio CR/F_90_<0.1 or CR/F_18_<1 where F_18_ and F_90_ are infrared fluxes at 18 and 90{mu}m in Jy, respectively, to search for obscured AGNs. X-ray spectra of 48 candidates, for which no X-ray results have been published, are analyzed and X-ray evidence for the presence of obscured AGNs such as a convex shape X-ray spectrum indicative of absorption of N_H_~10^22-24^/cm2, a very flat continuum, or a strong Fe-K emission line with an equivalent width of >700eV is found in 26 objects. Six of them are classified as Compton-thick AGNs, and four are represented by either Compton-thin or Compton-thick spectral models. The success rate of finding obscured AGNs combining our analysis and the literature is 92% if the 18{mu}m condition is used. Of the 26 objects, 4 are optically classified as an HII nucleus and are new "elusive AGNs" in which star formation activity likely overwhelms AGN emission in the optical and infrared bands.2015ApJ...814...11Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/814/11CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/xmm : XMM-Newton Observation Log (XMM-Newton Science Operation Center, 2012)IX/46 : XMM-Newton Serendipitous Source Catalogue 3XMM-DR5 (XMM-SSC, 2016)IX/44 : XMM-Newton Serendipitous Source Catalogue 3XMM-DR4 (XMM-SSC, 2013)IX/41 : XMM-Newton Serendipitous Source Catalogue 2XMMi-DR3 (XMM-SSC, 2010)II/297 : AKARI/IRC mid-IR all-sky Survey (ISAS/JAXA, 2010)VIII/76 : Leiden/Argentine/Bonn (LAB) Survey of Galactic HI (Kalberla+ 2005)VII/237 : HYPERLEDA. I. Catalog of galaxies (Paturel+, 2003)VII/224 : Quasars and Active Galactic Nuclei (10th Ed.) (Veron+ 2001)J/ApJS/207/36 : 2nd MAXI/GSC cat. in high galactic-latitude sky (Hiroi+, 2013)J/MNRAS/426/2522 : FeK lines in Seyfert 1 galaxies (Patrick+, 2012)J/A+A/545/A101 : Spectra of 29 Swift/BAT optical counterparts (Parisi+, 2012)J/ApJ/754/45 : IR properties of Swift/BAT X-ray AGNs (Ichikawa+, 2012)J/ApJ/753/104 : AGN identifications from AKARI and Swift (Matsuta+, 2012)J/MNRAS/414/3084 : Multi-waveband analysis of 12um galaxies (Brightman+, 2011)J/A+A/530/A42 : X-ray properties of AGNs in XBS (Corral+, 2011)J/MNRAS/413/1206 : XMM survey of 12um selected galaxies (Brightman+, 2011)J/ApJ/728/58 : Swift-BAT survey of AGNs (Burlon+, 2011)J/ApJ/709/884 : Role of starburst-AGN composites in LIRG mergers (Yuan+, 2010)J/AJ/138/332 : LEDA CMD/tip of the red giant branch (Jacobs+, 2009)J/MNRAS/392/1509 : Distribution of AGNs in galaxy clusters (Gilmour+, 2009)J/A+A/493/339 : XMM-Newton serendipitous Survey. V. (Watson+, 2009)J/ApJ/663/81 : SED of hard X-ray selected AGN in XMDS (Polletta+, 2007)J/MNRAS/375/931 : Radio sources in the 6dFGS (Mauch+, 2007)J/PASJ/58/931 : X-ray sources in A194 and A1060 (Hudaverdi+, 2006)J/ApJ/648/111 : Chandra sources near AGNs (Levenson+, 2006)J/ApJS/161/185 : GIS catalog project : source catalog II (Ueda+, 2005)J/ApJ/624/135 : Phoenix Deep Survey spectroscopic catalog (Afonso+, 2005)J/ApJ/616/707 : Circumnuclear structure of NICMOS galaxies (Hunt+, 2004)J/ApJ/596/944 : SEXSI catalog (Harrison+, 2003)J/AJ/126/1750 : Seyfert population in SSRS2 (Maia+, 2003)J/A+A/393/57 : Velocity field in the Local Group (Terry+, 2002)J/A+A/368/797 : Soft X-ray properties of Seyfert galaxies (Pfefferkorn+, 2001)J/ApJS/132/37 : Spectroscopy of Southern warm IR galaxies (Kewley+, 2001)J/ApJ/522/113 : 1Jy IRAS galaxies optical spectroscopy (Veilleux+, 1999)J/PASP/111/438 : Updated Zwicky catalog (UZC) (Falco+, 1999)J/A+AS/135/437 : AGNs with composite spectra. II. (Goncalves+ 1999)J/A+AS/132/181 : Very luminous IRAS galaxies spectra. II. (Wu+ 1998)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/814/11https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/814/11http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/814/11https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/814/11https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/814/11http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/814/11GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/814/11/table2 (X-ray and infrared luminosities)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/814/11/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/814/11/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/814/11/table2?GETtext/xml+votable180.050000true12.196422531.95696810.0055555555555555566/700 1008 1698 1700 1701 2229 2248 2266 2432 2564 2686 3506 3519 3934 4344 4369 4439 4447 4695 4804 4821 4993 5284 5423 5523 5587 5629 5630 5970 5975 5980 6009 6034 6098 6458 6618 7132 7309 7424 7446 7485 7552 7604 7606 7659 7741 7777 7869 7921 7986 8106 8173 8225 8673 8845 8950 9770 9895 10210 10321 10348 10465 10475 10485 10560 10637 10761 10769 10817 10856 10912 10927 10977 11010 11027 11029 11101 11206 11392 11460 12060 12122 13511 15592 16042 16784 16834 17061 17183 17205 17264 17286 17438 17529 17582 17683 17689 17748 17754 17819 17850 18016 18017 18209 18212 18387 18406 18742 18748 18779 18794 18809 18897 18935 19296 19376 19619 19730 19797 19954 20000 20021 20060 20061 21016 21403 21430 21450 21785 22632 22721 22873 22915 23086 23171 23178 23738 23921 24831 24842 24896 24949 24958 25610 25635 25907 25977 26265 26267 26292 26331 26443 26540 26596 26811 26866 26867 26902 27191 27257 27342 27421 27460 27604 27617 27728 27767 27914 27937 28035 28154 28184 28251 28393 28515 28631 30027 31081 31158 31259 32908 33094 33115 33121 33176 33242 33325 33409 33920 34070 34290 34294 34443 34531 34534 34540 34737 34845 35055 35365 35447 35576 35608 36247 36668 36785 36861 36990 37559 38129 38139 38653 38703 38852 38853 38868 38946 39182 40410 40777 41059 41982 43233 43262 43339 43564 43626 43634 43677 43712 43787 43825 43874 43877 43881 43942 45587 45735 45754 45816 45997 46079 46130 46399 46568 46987 47047 47078 47102 47120 47415 48467https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/814/11?format=asciiX-rayInfraredOpticaldefaultJ/ApJ/814/11/table5Log of XMM-Newton observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameTarget namemeta.id;meta.maincharONameOther namemeta.idcharSetIR samplemeta.idcharTTMorphological Hubble type taken from HyperLedasrc.morph.typecharz[0.002/0.2]? Spectroscopic redshift (1)src.redshiftdoublenullableE_z[0.007/0.02]? Positive error on z (1)stat.error;stat.maxfloatnullablee_z[0.006/0.02]? Negative error on z (1)stat.error;src.redshiftfloatnullableNH[0.007/0.3] Galactic Hydrogen column densityphys.columnDensity;pos.galacticdoubleObsID[12440101/555020201] XMM-Newton Obsnometa.notelongExp[2.7/71] Net exposurestime.expofloatJ/ApJ/814/11/refsReferencesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRef[1/706] Reference codemeta.noteintAutAuthor's name(s)meta.bib.authorcharBibCodeBibcodemeta.bib.bibcodecharCommCommentmeta.notecharJ/ApJ/814/11/xmmirXMM and AKARI 18um and 90um datal_NHLimit flag on NHmeta.code.errorcharClX-ray class (4)src.classcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSetInfrared sample (18um+90um (table 1), 90um only (table 3) or 18um only (table 4)meta.idcharXMMXMM identifier (2XMM or 2XMMi JHHMMSS.s+DDMMSS)meta.id.crosscharNameCommon identifiermeta.id;meta.maincharONameOther common identifiermeta.idcharf_OName[c] Flag on OName (G1)meta.codecharz[-0.0008/0.4]? Spectrocopic redshiftsrc.redshiftdoublenullableCR[0.002/36] XMM/EPIC-PN 0.2-12keV count rates**-1phot.count;em.X-rayfloatHR4? XMM/EPIC-PN hardness ratio (1)phot.flux;arith.ratiofloatnullableF18[0.1/72.3]? AKARI 18 micron flux densityJyphot.flux.density;em.IR.8-15umfloatnullableF90[0.3/202.6]? AKARI 90 micron flux densityJyphot.flux.density;em.IR.60-100umfloatnullableCR/F18[0.003/79.2]? XMM count rate to AKARI 19 micron flux ratiophot.flux;arith.ratiofloatnullableCR/F90[0/44.2]? XMM count rate to AKARI 91 micron flux ratiophot.flux;arith.ratiodoublenullableOTypeOptical classification (L=LINER, T=transition object)meta.code.classcharr_OType[1/608]? Reference code for OType (see refs.dat file)meta.noteintnullableNH[0.007/371.5]? Hydrogen column density1e+22cm**-2phys.columnDensitydoublenullableE_NH[0.01/2230]? Upper uncertainty in NH (3)1e+22cm**-2stat.error;stat.maxdoublenullablee_NH[0.006/123]? Lower uncertainty in NH (3)1e+22cm**-2stat.errorfloatnullablef_NH[a-e] Flag on NH (2)meta.codecharr_Cl[101/706]? Reference code for Cl (see refs.dat file)meta.ref;pos.frameintnullableJ/ApJ/814/11/table2X-ray and infrared luminositiesSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNobsDisplay the XMM log (table 5)meta.ref.urlintnullableNameSource identifiermeta.id;meta.maincharprimaryONameOther namemeta.idcharf_OName[c] Flag on OName (G1)meta.codecharlogLX[38.8/45.8]? Log 2-10keV X-ray luminositylog(1e-07W)phys.luminosity;em.X-rayfloatnullabler_logLXReference code for logLX (see #201-217 in refs.dat file) (1)meta.ref;pos.framecharlogL18[41.2/46.1]? Log AKARI 18 micron luminositylog(1e-07W)phys.luminosity;em.IR.8-15umfloatnullablelogL90[41.6/46.1]? Log AKARI 90 micron luminositylog(1e-07W)phys.luminosity;em.IR.60-100umfloatnullableDist[3.3/27.7]? Distance (2)Mpcpos.distance;pos.heliocentricfloatnullabler_Dist[301/316]? Reference code for Dist (see refs.dat file)meta.ref;pos.frameintnullableXlink to XMM properties and AKARI fluxesmeta.ref.urlcharAKARIDisplay the AKARI/IRC mid-IR data (II/297) within 3"meta.ref.urlintnullableXMMDisplay the 3XMM-DR5 data (IX/46) within 3"meta.ref.urlintnullableNEDSimbad column added by the CDSmeta.ref.urlchar_RAPositions from NED or from object's name (right ascension part)degpos.eq.ra;meta.main_DEPositions from NED or from object's name (declination part)degpos.eq.dec;meta.main