J/ApJS/222/5ivo://CDS.VizieR/J/ApJS/222/5doi:10.26093/cds/vizier.22220005CDSAckermann M.Ajello M.Atwood W.B.Baldini L.Ballet J.,Barbiellini G.Bastieri D.Becerra Gonzalez J.Bellazzini R.,Bissaldi E.Blandford R.D.Bloom E.D.Bonino R.Bottacini E.,Brandt T.J.Bregeon J.Bruel P.Buehler R.Buson S.Caliandro G.A.,Cameron R.A.Caputo R.Caragiulo M.Caraveo P.A.Cavazzuti E.,Cecchi C.Charles E.Chekhtman A.Cheung C.C.Chiang J.Chiaro G.,Ciprini S.Cohen J.M.Cohen-Tanugi J.Cominsky L.R.Conrad J.,Cuoco A.Cutini S.D'Ammando F.de Angelis A.de Palma F.Desiante R.,Di Mauro M.Di Venere L.Dominguez A.Drell P.S.Favuzzi C.,Fegan S.J.Ferrara E.C.Focke W.B.Fortin P.Franckowiak A.,Fukazawa Y.Funk S.Furniss A.K.Fusco P.Gargano F.Gasparrini D.,Giglietto N.Giommi P.Giordano F.Giroletti M.Glanzman T.,Godfrey G.Grenier I.A.Grondin M.-H.Guillemot L.Guiriec S.,Harding A.K.Hays E.Hewitt J.W.Hill A.B.Horan D.Iafrate G.,Hartmann D.Jogler T.Johannesson G.Johnson A.S.Kamae T.Kataoka J.,Knodlseder J.Kuss M.La Mura G.Larsson S.Latronico L.,Lemoine-Goumard M.Li J.Li L.Longo F.Loparco F.Lott B.,Lovellette M.N.Lubrano P.Madejski G.M.Maldera S.Manfreda A.,Mayer M.Mazziotta M.N.Michelson P.F.Mirabal N.Mitthumsiri W.,Mizuno T.Moiseev A.A.Monzani M.E.Morselli A.Moskalenko I.V.,Murgia S.Nuss E.Ohsugi T.Omodei N.Orienti M.Orlando E.,Ormes J.F.Paneque D.Perkins J.S.Pesce-Rollins M.Petrosian V.,Piron F.Pivato G.Porter T.A.Raino S.Rando R.Razzano M.,Razzaque S.Reimer A.Reimer O.Reposeur T.Romani R.W.,Sanchez-Conde M.Parkinson P.M.S.Schmid J.Schulz A.Sgro C.,Siskind E.J.Spada F.Spandre G.Spinelli P.Suson D.J.Tajima H.,Takahashi H.Takahashi M.Takahashi T.Thayer J.B.Thompson D.J.,Tibaldo L.Torres D.F.Tosti G.Troja E.Vianello G.Wood K.S.,Wood M.Yassine M.Zaharijas G.Zimmer S.2017-09-06T06:23:36Z2016-04-20T15:36:02ZCDS support team

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

cds-question@unistra.frgamma-ray-astronomybl-lacertae-objectsredshiftedWe present a catalog of sources detected above 50GeV by the Fermi-Large Area Telescope (LAT) in 80 months of data. The newly delivered Pass 8 event-level analysis allows the detection and characterization of sources in the 50GeV-2TeV energy range. In this energy band, Fermi-LAT has detected 360 sources, which constitute the second catalog of hard Fermi-LAT sources (2FHL). The improved angular resolution enables the precise localization of point sources (~1.7' radius at 68% C. L.) and the detection and characterization of spatially extended sources. We find that 86% of the sources can be associated with counterparts at other wavelengths, of which the majority (75%) are active galactic nuclei and the rest (11%) are Galactic sources. Only 25% of the 2FHL sources have been previously detected by Cherenkov telescopes, implying that the 2FHL provides a reservoir of candidates to be followed up at very high energies. This work closes the energy gap between the observations performed at GeV energies by Fermi-LAT on orbit and the observations performed at higher energies by Cherenkov telescopes from the ground.2016ApJS..222....5Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/222/5CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/274 : The Roma BZCAT - 5th edition (Massaro+, 2015)VII/189 : Catalog of Pulsars (Taylor+ 1995)J/A+A/588/A141 : The MWA view of Fermi blazars (Giroletti+, 2016)J/ApJ/810/14 : Third catalog of LAT-detected AGNs (3LAC) (Ackermann+, 2015)J/ApJS/218/23 : Fermi LAT third source catalog (3FGL) (Acero+, 2015)J/A+A/562/A64 : Fermi detection of BL Lac objects (Wu+, 2014)J/ApJS/209/34 : The first Fermi-LAT >10GeV catalog (1FHL) (Ackermann+, 2013)J/ApJS/208/17 : 2nd Fermi LAT cat. of gamma-ray pulsars (2PC) (Abdo+, 2013)J/ApJS/207/16 : BL Lac candidates for TeV observations (Massaro+, 2013)J/ApJ/764/135 : Spectroscopic redshifts of BL Lac objects (Shaw+, 2013)J/ApJS/199/31 : Fermi LAT second source catalog (2FGL) (Nolan+, 2012)J/ApJ/748/49 : Optical spectroscopy of 1LAC broad-line blazars (Shaw+, 2012)J/ApJ/700/597 : FERMI LAT detected blazars (Abdo+, 2009)http://fermi.gsfc.nasa.gov/ssc/ : Fermi Science Support Center home pagehttp://tevcat.uchicago.edu/ : TeVCat home pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/222/5https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/222/5http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/222/5https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/222/5https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/222/5http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/222/5GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/222/5/2fhl (The 2FHL source catalog (see tables 2 and 3))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/222/5/2fhl?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/222/5/2fhl?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/222/5/2fhl?GETtext/xml+votable180.050000true2.043747.16420.005555555555555556Cone search capability for table J/ApJS/222/5/table5 (New 2FHL extended sources)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/222/5/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/222/5/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/222/5/table5?GETtext/xml+votable180.050000true67.8101155.889330.005555555555555556Cone search capability for table J/ApJS/222/5/rois (Region of interests (ROIs) list)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/222/5/rois?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/222/5/rois?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/222/5/rois?GETtext/xml+votable180.050000true1.867450.52220.005555555555555556Cone search capability for table J/ApJS/222/5/table4 (2FHL extended sources previously detected by the Fermi-LAT)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/222/5/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/222/5/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/222/5/table4?GETtext/xml+votable180.050000true81.6507-68.420050.0055555555555555566/100 266 342 398 447 514 578 579 851 988 1128 1445 1571 1622 1700 1701 1853 1915 1935 1940 1970 2028 2094 2295 2331 2364 2414 2549 2574 2612 2708 2792 2808 2896 2903 2966 3023 3099 3222 3308 3351 3382 3406 3431 3616 3629 3667 3670 3679 3681 3710 3715 3784 3973 4050 4255 4312 4723 4770 4869 4964 5072 5081 5132 5423 5462 5483 5560 5817 5836 5915 6018 6021 6067 6088 6356 6436 6507 6647 6723 6767 6876 6888 6910 7038 7091 7207 7212 7354 7373 7426 7518 7548 7576 7639 7684 7756 7896 8004 8008 8067 8071 8124 8210 8290 8374 8476 8832 8915 8945 9113 9181 9196 9612 9627 9711 10071 10605 10800 10843 11045 11153 11212 11444 11639 11649 11682 11706 11749 11876 12109 12179 12231 12385 12397 12973 13179 13184 13319 13565 13586 13613 13640 13673 13705 13743 13820 13927 13960 13964 14041 14110 14285 14356 14573 14641 14694 14696 14751 14871 15059 15090 15211 15410 15419 15487 15681 15739 15917 15933 15969 16190 16223 16298 16665 16796 16882 16911 17095 17516 17843 17859 18085 18402 18416 18457 18506 18592 18666 19042 19241 19421 19589 19907 20016 20099 20141 20221 20325 20456 20604 20611 20624 20777 20861 20888 20984 21068 21121 21340 21793 21806 21960 21961 22140 22363 22949 23015 23134 23208 23222 23400 23756 23835 23923 23995 24004 24027 24035 24070 24112 24185 24260 24276 24290 24387 24444 24459 24566 24626 24737 24751 24761 25132 25203 25385 25910 26116 26131 26256 26626 26798 26854 27217 27765 28083 28138 28249 28352 28394 28481 28498 28517 28686 28723 28736 28824 28830 28891 28912 28913 28919 28971 29017 29126 29162 29182 29198 29208 29237 29247 29300 29504 29532 29575 29596 29598 29620 29729 29950 29952 30037 30145 30218 30219 30244 30374 30416 30498 30518 30565 30570 30573 30578 30593 30616 30692 30747 30838 31011 31079 31239 31332 31515 31663 31763 31851 31915 32030 32261 32345 32370 32379 32605 32712 33094 33100 33164 33214 33350 33467 33522 33582 33583 33670 33746 33818 33880 33898 34123 34137 34209 34443 34528 34572 34771 34788 34872 34879 35074 35076 35196 35199 35453 35630 35786 35832 35943 35981 36058 36278 36342 36556 36882 36951 36953 37045 37259 37343 37399 37529 37568 37731 37777 37869 37926 37929 38016 38024 38093 38355 38797 38944 39037 39198 39210 39235 39241 39242 39266 39466 39505 39646 39658 39671 39711 39969 39972 39998 40056 40174 40353 40452 40479 40689 41029 41185 41359 41363 41372 41374 41511 41574 41583 41653 41654 41685 41741 41758 41760 41780 41808 41809 41952 41996 42155 42168 42171 42208 42214 42218 42225 42288 42353 42374 42393 42434 42435 42501 42515 42745 42767 42782 42970 43155 43225 43262 43317 43366 43380 43382 43416 43597 43603 43968 44069 44152 44192 44213 44247 44250 44340 44502 44582 44597 44813 44908 45024 45038 45068 45242 45293 45316 45364 45820 45836 46029 46258 46280 46370 46444 46528 46837 47014 47154 47319 47351 47354 47375 47398 47497 47610 47652 47960 48046 48603 48624 48778 48798 48828 48896 48985https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/222/5?format=asciiGamma-rayOpticaldefaultJ/ApJS/222/5/2fhlThe 2FHL source catalog (see tables 2 and 3)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2FHL2FHL name (JHHMM.m+DDMMe) (Source_Name)meta.id;meta.maincharpEPreviously detected extended source (link to table 4)meta.ref.urlintnullableRAJ2000Right ascension; J2000 (RAJ2000)degpos.eq.ra;meta.mainDEJ2000Declination; J2000 (DEJ2000)degpos.eq.dec;meta.mainGLONGalactic longitude (GLON)degpos.galactic.lonGLATGalactic latitude (GLAT)degpos.galactic.latfloate_pos[0/0.2] Position uncertainty at 68% confidence level (Pos_err_68)degstat.errorfloatTS[25/5601] Test statistic (TS)stat.fit.goodnessfloatGam[0.9/15] Observed spectral index (Spectral_Index) (1)spect.indexfloate_Gam? 1{sigma} uncertainty on the observed spectral index (Unc_Spectral_Index)stat.errorfloatnullableSpD11? Intrinsic spectral index computed using the Dominguez et al. (2011MNRAS.410.2556D) EBL model (Intr_Spectrl_Index_D11) (1)spect.indexfloatnullablee_SpD11? 1{sigma} uncertainty on SpD11 (Unc_Intr_Spectral_Index_D11)stat.errorfloatnullableSpG12? Intrinsic spectral index computed using the Gilmore et al. (2012MNRAS.422.3189G) (1) EBL model (Intr_Spectra_Index_G12)spect.indexfloatnullablee_SpG12? 1{sigma} uncertainty on SpG12 (Unc_Intr_Spectral_Index_G12)stat.errorfloatnullableF50Integral photon flux from 50GeV to 2TeV (Flux50)ph.cm**-2.s**-1phot.flux.density;em.gamma.harddoublee_F501{sigma} uncertainty on F50 (Unc_Flux50)ph.cm**-2.s**-1stat.errordoubleS50Energy flux from 50GeV to 2TeV in erg/cm^2^/s (Energy_Flux50)mW.m**-2phot.flux.density;em.gamma.harddoublee_S501{sigma} uncertainty on S50 (Unc_Energy_Flux50)mW.m**-2stat.errordoubleF171Integral photon flux from 50 to 171GeV (Flux50_171GeV)ph.cm**-2.s**-1phot.flux.density;em.gamma.harddoublee_F171[-0.1/]? 1{sigma} negative uncertainty on F171 (Unc_Flux50_171GeV)ph.cm**-2.s**-1stat.errordoublenullableE_F171? 1{sigma} positive uncertainty on F171 (Positive_Unc_Flux50_171GeV) (2)ph.cm**-2.s**-1stat.error;stat.maxdoublenullableTS171Square root of the Test Statistic between 50 and 171GeV (Sqrt_TS50_171GeV)stat.fit.goodnessfloatF585Integral photon flux from 171 to 585GeV (Flux171_585GeV)ph.cm**-2.s**-1phot.flux.density;em.gamma.harddoublee_F585[-0.1/]? 1{sigma} negative uncertainty on F585 (Unc_Flux171_585GeV)ph.cm**-2.s**-1stat.errordoublenullableE_F585? 1{sigma} positive uncertainty on F585 (Positive_Unc_Flux171_585GeV) (2)ph.cm**-2.s**-1stat.error;stat.maxdoublenullableTS585Square root of the Test Statistic between 171 and 585GeV (Sqrt_TS171_585GeV)stat.fit.goodnessfloatF2000Integral photon flux from 585GeV to 2TeV (Flux585_2000GeV)ph.cm**-2.s**-1phot.flux.density;em.gamma.harddoublee_F2000[-0.1/]? 1{sigma} negative uncertainty on F2000 (Unc_Flux585_2000GeV)ph.cm**-2.s**-1stat.errordoublenullableE_F2000? 1{sigma} positive uncertainty on F2000 (Positive_Unc_Flux585_2000GeV) (2)ph.cm**-2.s**-1stat.error;stat.maxdoublenullableTS2000Square root of the Test Statistic between 585GeV and 2TeV (Sqrt_TS585_2000GeV)stat.fit.goodnessfloatNpred[3/378] Predicted number of photons from the source (Npred)meta.numberfloatEHEP[52/1997]? Highest photon energy (HEP_Energy) (3)GeVem.energy;stat.maxfloatnullablePHEP[0.85/1]? Probability that the HEP is coming from the source, >=0.85 (HEP_Prob) (3)stat.fit.goodnessfloatnullableROI[1/143] Region of interest number (ROI)obs.fieldintAssocName of the most likely associated source (ASSOC)meta.idcharPBAY[0.8/1]? Probability of association from the Bayesian method (ASSOC_PROB_BAY)stat.fit.goodnessfloatnullablePLR[0.7/1]? Probability of association from the likelihood ratio method (ASSOC_PROB_LR)stat.fit.goodnessfloatnullableClassClass designation for the most likely association (CLASS) (4)src.classcharz[0/2.1]? Redshift (when available) of the most likely associated source (Redshift) (5)src.redshiftfloatnullableNuPk? Observed Synchrotron peak frequency (NuPeak_obs)Hzem.freq;stat.maxdoublenullable3FGLName of the most likely associated source in the 3FGL (_3FGL_Name)meta.id.assocchar1FHLName of the most likely associated source in the 1FHL (_1FHL_Name)meta.id.assoccharTeVCatName of the most likely associated source in the TeVCat (TeVCat_Name)meta.id.assoccharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/ApJS/222/5/table5New 2FHL extended sourcese_Gamma[0.1/0.3] 1{sigma} uncertainty on Gammastat.errorfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2FHL2FHL name (JHHMM.m+DDMMe) (1)meta.id;meta.maincharGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latTS[75.6/109.3] Test Statisticstat.fit.goodnessfloatTSex[29.9/83.4] Extended Test Statistic TS_ext_stat.fit.goodnessfloatTS2p[12.9/26.2] Second point source TS (TS_2pts_)stat.fit.goodnessfloatF50[7.2/17.6] Integral photon flux from 50GeV to 2TeVphot.flux.density;em.gamma.hardfloate_F50[1.7/2.8] 1{sigma} uncertainty on F50stat.errorfloatGamma[1.5/2.2] Observed spectral indexspect.indexfloatAssocName of the most likely associated sourcemeta.idcharClassClass designation for the most likely associationsrc.classcharRad[0.2/1.3] Radiusdegphys.angSizefloat_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data)degpos.eq.decnullableindexedJ/ApJS/222/5/roisRegion of interests (ROIs) listrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintROI[1/154] Running sequence number of the Region of Interest (ROI)meta.id;obs.fieldintRAJ2000Right ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latfloatRad[5/25] Radiusdegphys.angSizefloatJ/ApJS/222/5/table42FHL extended sources previously detected by the Fermi-LATModSpatial modelstat.param;meta.modelledcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2FHL2FHL name (JHHMM.m+DDMMe) (1)meta.id;meta.maincharGLON[6.5/347.4] Galactic longitudedegpos.galactic.lonGLAT[-32.9/3.1] Galactic latitudedegpos.galactic.latTS[28/438] Test Statisticstat.fit.goodnessfloatAssocName of the most likely associated sourcemeta.idcharClassClass designation for the most likely associationsrc.classcharExtExtension(s) (2)degphys.angSizechar_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data)degpos.eq.decnullableindexed