J/ApJ/939/117ivo://CDS.VizieR/J/ApJ/939/117doi:10.26093/cds/vizier.19390117CDSZhang L.Vieira J.D.Ajello M.Malkan M.A.Archipley M.A.Capota J.,Foster A.Madejski G.2025-02-18T20:14:18Z2024-11-20T08:51:10ZCDS support team

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

cds-question@unistra.frgamma-ray-astronomymillimeter-astronomysubmillimeter-astronomyradio-sourcessurveysinfrared-astronomyx-ray-sourcesastronomical-object-identificationThe fourth Fermi Large Area Telescope catalog (4FGL) contains 5064 {gamma}-ray sources detected at high significance, but 26% of them still lack associations at other wavelengths. The SPT-SZ survey, conducted between 2008 and 2011 with the South Pole Telescope (SPT), covers 2500deg^2^ of the southern sky in three millimeter-wavelength (mm) bands and was used to construct a catalog of nearly 5000 emissive sources. In this study, we introduce a new cross-matching scheme to search for multiwavelength counterparts of extragalactic {gamma}-ray sources using a mm catalog. We apply a Poissonian probability to evaluate the rate of spurious false associations and compare the multiwavelength associations from the radio, mm, near-infrared, and X-ray with 4FGL {gamma}-ray sources. In the SPT-SZ survey field, 85% of 4FGL sources are associated with mm counterparts. These mm sources include 94% of previously associated 4FGL sources and 56% of previously unassociated 4FGL sources. The latter group contains 40 4FGL sources for which SPT has provided the first identified counterparts. Nearly all of the SPT-associated 4FGL sources can be described as flat-spectrum radio quasars or blazars. We find that the mm band is the most efficient wavelength for detecting {gamma}-ray blazars when considering both completeness and purity. We also demonstrate that the mm band correlates better to the {gamma}-ray band than the radio or X-ray bands. With the next generation of CMB experiments, this technique can be extended to greater sensitivities and more sky area to further complete the identifications of the remaining unknown {gamma}-ray blazars.2022ApJ...939..117Zhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/939/117CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIX/10 : ROSAT All-Sky Bright Source Catalogue (1RXS) (Voges+ 1999)IX/29 : ROSAT All-Sky Survey Faint Source Catalog (Voges+ 2000)VIII/78 : Sydney University Molonglo Sky Survey (SUMSS) (Mauch+ 2006)VIII/81 : Sydney University Molonglo Sky Survey (SUMSS V2.1) (Mauch+ 2008)II/328 : AllWISE Data Release (Cutri+ 2013)VII/274 : The Roma BZCAT - 5th edition (Massaro+, 2015)J/MNRAS/380/199 : SCUBA Half-Degree Extragalactic Survey. III (Ivison+, 2007)J/ApJS/175/97 : CGRaBS: survey of {gamma}-ray blazar cand. (Healey+, 2008)J/ApJ/719/763 : Millimeter-wave sources in the SPT survey (Vieira+, 2010)J/MNRAS/413/2314 : Radio & mid-IR counterpart of submm galaxies (Biggs+, 2011)J/ApJ/748/68 : WISE IR colors of gamma-ray blazars (D'Abrusco+, 2012)J/ApJS/217/4 : 2FGL sources observed between 5-9GHz (Schinzel+, 2015)J/ApJ/851/33 : Multi-wavelength analysis of CGRaBS blazars (Paliya+, 2017)J/ApJ/838/139 : Radio follow-up on 3FGL unassoc. sources (Schinzel+, 2017)J/ApJS/247/33 : Fermi LAT fourth source catalog (4FGL) (Abdollahi+, 2020)J/ApJ/900/55 : The SPT-SZ catalog at 95, 150, and 220GHz (Everett+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/939/117https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/939/117http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/939/117https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/939/117https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/939/117http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/939/117GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/939/117/table2 (282 4FGL sources within 2500deg^2^ SPT-SZ survey field)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/939/117/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/939/117/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/939/117/table2?GETtext/xml+votable180.050000true84.7098397-44.08581640.005555555555555556Cone search capability for table J/ApJ/939/117/table3 (Full 4FGL multi-wavelength association)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/939/117/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/939/117/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/939/117/table3?GETtext/xml+votable180.050000true84.7098397-44.08581640.0055555555555555566/16385 20481 33140 33198 33203 33206 33214 33233 33237-33238 33243 33254 33270 33406 33457 33464 33467-33468 33482 33501 33506 33514 33525 33528 33549 33560 33570 33575 33580 33583 33596 33606 33609 33611 33632 33649 33670 33678-33679 33684 33708 33729 33744 33746 33750 33758 33763 33774 33795 33805 33818-33819 33825 33827 33833 33862 33865 33870 33880-33882 33898 33929 33945 33963-33964 33968 33984 33997 34003 34012-34013 34034 34038 34046 34053 34072 34085-34086 34095 34099 34104 34107 34117 34119 34123 34128 34187 34209-34210 34214 34216 34304 34312 34317 34334 34346 34375 34392 34437 34443 34461 34464 34478 34832 34860 34870-34871 34874 34900 34911 34918 34922 34928 34931 34946 34949 34956 34966-34968 35029 35033 35037 35039 35046 35063 35074 35076 35079 35093 35116 35119 35146 35216 35227 35330 35333 35339 35342-35343 35370 35374 35376 35384 35395 35401-35402 35433-35434 35441 35475 35482 35484 35489 35498 38916 38918 38937 38942 38953-38954 39062 39065 39077 39081 39085 39091-39093 39138 39146 39431 39439 39459 39464 39466-39467 39489 39520 39529 39576 39591 39600 45406 45491 45496 45564 45681 45812 45836 45847 45859 45874 45912 45914 45933 45943 45957 45970 45972 45974 45977 45982 45998 46012 46020 46033 46052 46055 46057 46076 46090 46122 46142 46157 46159 46200 46204 46209 46220 46237 46239 46251 46258 46280 46285 46310 46320 46331 46337 46342 46356 46358 46361 46369-46371 46373-46374 46392 46394 46404 46439 46442 46444-46445 46448 46480 46501 46506 46608 46613 46617 46622 46699 46721 46740 46744 46761 47375 47413 47419 47425 47442 47447 47460-47461 47463 474666.294766091792609e-23 1.4577353054677622e-22https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/939/117?format=asciiGamma-rayX-rayInfraredMillimeterRadiodefaultJ/ApJ/939/117/table2282 4FGL sources within 2500deg^2^ SPT-SZ survey fieldS150[0.7/4843]? Flux density at 150GHzmJyphot.flux.density;em.mm.100-200GHzfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[0/281] Index number (G1)meta.idint4FGL4FGL catalog identifier (JHHMM.m+DDMM)meta.id;meta.maincharprimaryf_4FGL[n] Flag on 4FGL (G2)meta.codecharS0.1-100[6.9/1993] 4FGL flux between 0.1-100GeV1e-13mW.m**-2phot.flux.density;em.gamma.hardfloate_S0.1-100[1.8/26] Uncertainty in S0.1-1001e-13mW.m**-2stat.errorfloatSPT-SSPT catalog identifier (JHHMMSS+DDMM.m + SPT-S or FSPT-S) (G3)meta.id.crosscharSimbadSimbad column added by the CDSmeta.ref.urlcharNEDNED column added by the CDSmeta.ref.urlchare_S150[0.3/970.2]? Uncertainty in S150mJystat.errorfloatnullabledr1[0.06/22.1]? Source separationarcminpos.angDistancefloatnullabledr2[0.08/3.8]? Source separation in {sigma} of the 4FGL positional uncertaintystat.error;pos.angDistancefloatnullablelogP[-8.54/-1.07]? log probability of false associationstat.fit.goodnessfloatnullableFermiDisplay data from the 4FGL (Abdollahi+ 2020, J/ApJS/247/33) and 4FGL-DR3 (IX/67)meta.ref.urlchar_RAPositions from 4FGL in SIMBAD (right ascension part)degpos.eq.ra;meta.main_DEPositions from 4FGL in SIMBAD (declination part)degpos.eq.dec;meta.mainJ/ApJ/939/117/table3Full 4FGL multi-wavelength associationSimbadSimbad column added by the CDSmeta.ref.urlchar4FGL4FGL catalog identifier (JHHMM.m+DDMM)meta.id;meta.maincharprimaryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[0/281] Index number (G1)meta.idintm_4FGLNumber of SUMSS (or other ID) counterpart(s) for this 4FGLmeta.numberintnullablef_4FGL[n] Flag on 4FGL (G2)meta.codecharSPT-SSPT catalog identifier (JHHMMSS+DDMM.m + SPT-S or FSPT-S) (G3)meta.id.crosscharRAdeg? SPT Right Ascension in decimal degrees (J2000)degpos.eq.ranullableDEdeg? SPT Declination in decimal degrees (J2000)degpos.eq.decnullableS95[0.5/5959]? Deboosted 95GHz flux densitymJyphot.flux.density;em.mm.50-100GHzfloatnullableS150[0.7/4843]? Deboosted 150GHz flux densitymJyphot.flux.density;em.mm.100-200GHzfloatnullableS220[2/3906]? Deboosted 220GHz flux densitymJyphot.flux.density;em.mm.200-400GHzfloatnullablez[2e-05/2.9]? Measured redshift from NED if availablesrc.redshiftdoublenullable1RXSRASS catalog identifier (JHHMMSS.s+DDMMSS)meta.id.crosscharSUMSSSUMSS catalog identifier (JHHMMSS+DDMMSS)meta.id.crosscharWISEAAllWISE catalog identifier (JHHMMSS.ss+DDMMSS.s)meta.id.crosscharFermiDisplay data from the 4FGL (Abdollahi+ 2020, J/ApJS/247/33) and 4FGL-DR3 (IX/67)meta.ref.urlchar_RAPositions from 4FGL in SIMBAD (right ascension part)degpos.eq.ra;meta.main_DEPositions from 4FGL in SIMBAD (declination part)degpos.eq.dec;meta.main