J/ApJ/843/40ivo://CDS.VizieR/J/ApJ/843/40doi:10.26093/cds/vizier.18430040CDSAbeysekara A.U.Albert A.Alfaro R.Alvarez C.Alvarez J.D.Arceo R.,Arteaga-velazquez J.C.Ayala Solares H.A.Barber A.S.Baughman B.,Bautista-elivar N.Becerra Gonzalez J.Becerril A.Belmont-moreno E.,Benzvi S.Y.Berley D.Bernal A.Braun J.Brisbois C.,Caballero-mora K.S.Capistran T.Carraminana A.Casanova S.,Castillo M.Cotti U.Cotzomi J.Coutino De Leon S.De La Fuente E.,De Leon C.Diaz Hernandez R.Dingus B.L.Duvernois M.A.,Diaz-velez J.C.Ellsworth R.W.Engel K.Fiorino D.W.Fraija N.,Garcia-gonzalez J.A.Garfias F.Gerhardt M.Gonzalez Munoz A.,Gonzalez M.M.Goodman J.A.Hampel-arias Z.Harding J.P.Hernandez S.,Hernandez-almada A.Hinton J.Hui C.M.Huntemeyer P.Iriarte A.,Jardin-blicq A.Joshi V.Kaufmann S.Kieda D.Lara A.Lauer R.J.,Lee W.H.Lennarz D.Leon Vargas H.Linnemann J.T.Longinotti A.L.,Luis Raya G.Luna-garcia R.Lopez-coto R.Malone K.Marinelli S.S.,Martinez O.Martinez-castellanos I.Martinez-castro J.,Martinez-huerta H.Matthews J.A.Miranda-romagnoli P.Moreno E.,Mostafa M.Nellen L.Newbold M.Nisa M.U.Noriega-papaqui R.,Pelayo R.Pretz J.Perez-perez E.G.Ren Z.Rho C.D.Riviere C.,Rosa-gonzalez D.Rosenberg M.Ruiz-velasco E.Salazar H.,Salesa Greus F.Sandoval A.Schneider M.Schoorlemmer H.Sinnis G.,Smith A.J.Springer R.W.Surajbali P.Taboada I.Tibolla O.,Tollefson K.Torres I.Ukwatta T.N.Vianello G.Villasenor L.,Weisgarber T.Westerhoff S.Wisher I.G.Wood J.Yapici T.Younk P.W.,Zepeda A.Zhou H.2023-08-16T13:06:30Z2022-08-04T11:42:15ZCDS support team

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

cds-question@unistra.frgamma-ray-astronomyactive-galactic-nucleiWe present the first catalog of TeV gamma-ray sources realized with data from the newly completed High Altitude Water Cherenkov Observatory (HAWC). It is the most sensitive wide field-of-view TeV telescope currently in operation, with a one-year survey sensitivity of ~5%-10% of the flux of the Crab Nebula. With an instantaneous field of view >1.5sr and >90% duty cycle, it continuously surveys and monitors the sky for gamma-ray energies between hundreds of GeV and tens of TeV. HAWC is located in Mexico, at a latitude of 19{deg}N, and was completed in 2015 March. Here, we present the 2HWC catalog, which is the result of the first source search performed with the complete HAWC detector. Realized with 507 days of data, it represents the most sensitive TeV survey to date for such a large fraction of the sky. A total of 39 sources were detected, with an expected number of false detections of 0.5 due to background fluctuation. Out of these sources, 19 are new sources that are not associated with previously known TeV sources (association criteria: <0.5{deg} away). The source list, including the position measurement, spectrum measurement, and uncertainties, is reported, then each source is briefly discussed. Of the 2HWC associated sources, 10 are reported in TeVCat as PWN or SNR: 2 as blazars and the remaining eight as unidentified.2017ApJ...843...40Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/843/40CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/psr : ATNF Pulsar Catalogue (Manchester+, 2005)VII/272 : A catalogue of Galactic supernova remnants (Green, 2014)IX/67 : Incremental Fermi LAT 4th cat. (4FGL-DR3) (Fermi-LAT col., 2022)J/ApJS/123/79 : Third EGRET catalog (3EG) (Hartman+, 1999)J/ApJS/188/405 : Fermi-LAT first source catalog (1FGL) (Abdo+, 2010)J/other/NewA/16.503 : 2MASS observation of BL Lac objects II. (Mao+, 2011)J/ApJS/199/31 : Fermi LAT second source catalog (2FGL) (Nolan+, 2012)J/ApJS/208/17 : 2nd Fermi LAT cat. of gamma-ray pulsars (2PC) (Abdo+, 2013)J/ApJS/209/34 : The first Fermi-LAT >10GeV catalog (1FHL) (Ackermann+, 2013)J/ApJS/218/23 : Fermi LAT third source catalog (3FGL) (Acero+, 2015)J/ApJS/222/5 : The second Fermi-LAT >50GeV catalog (2FHL) (Ackermann+, 2016)J/A+A/587/A71 : SNR G11.0-0.0 1.4GHz radio cont. image (Castelletti+, 2016)J/ApJS/224/8 : The first Fermi LAT SNR catalog (1SC) (Acero+, 2016)J/ApJ/905/76 : 3rd HAWC cat. of VHE gamma-ray sources (Albert+, 2020)http://tevcat.uchicago.edu/ : Very High Energy Gamma-Ray online cataloghttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/843/40https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/843/40http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/843/40https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/843/40https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/843/40http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/843/40GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/843/40/2hwccat (The 2HWC catalog: source list, radius, fitted spectrum and nearest TeVCat sources (Tables 2 and 3))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/843/40/2hwccat?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/843/40/2hwccat?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/843/40/2hwccat?GETtext/xml+votable180.050000true83.6322.020.0055555555555555566/4657 5228 5423 9612 14354 14357 14413 14415 14619 14625 14692 14696-14697 23830 23941 23953 24185 25791 29100 29114 29460 29471 29505 29529 30219 30259 30262 30314 30318 30416 30423 30595 30607 30619 30645 30689 30692 30716 30719 31813https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/843/40?format=asciiGamma-raydefaultJ/ApJ/843/40/2hwccatThe 2HWC catalog: source list, radius, fitted spectrum and nearest TeVCat sources (Tables 2 and 3)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2HWC2HWC source identifier (JHHMM+DDd)meta.id;meta.maincharf_2HWC[*] Flag on 2HWC (G1)meta.codecharSearchPoint source search (1)phys.size.radiuscharTS[25.3/11000] Test statistic corresponding to "Search" (2)stat.fit.goodnessdoubleRAJ2000[83.6/308] Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000[-19.1/41.8] Declination (J2000)degpos.eq.dec;meta.mainGLON[11.3/311.2] Galactic longitudedegpos.galactic.lonGLAT[-5.8/65.1] Galactic latitudedegpos.galactic.latfloaterrPos[0.06/0.8] 1{sigma} statistical uncertainty of the positiondegstat.errorfloatSep[0.01/8.8] Separation with the nearest TeVCat sourcedegpos.angDistancefloatTeVCatNearest TeVCat source name (if Sep<0.5{deg})(3)meta.id.assoccharRad[0.5/2]? Tested radiusdegphys.angSizefloatnullableInd[-3.25/-1.5] Indexspect.indexfloate_Ind[0.01/0.67] Ind uncertainty (4)stat.errorfloatFGam[1.6/341.3] 7TeV differential flux1e-15TeV**-1.cm**-2.s**-1phot.flux.density;em.gamma.hardfloate_FGam[1.5/18.8] FGam uncertainty (4)1e-15TeV**-1.cm**-2.s**-1stat.errorfloatNfitNumber of spectral fit for this sourcemeta.numberintnullableSimbadSimbad column added by the CDSmeta.ref.urlchar