J/ApJ/755/47ivo://CDS.VizieR/J/ApJ/755/47doi:10.26093/cds/vizier.17550047CDSWilliams C.L.Hewitt J.N.Levine A.M.de Oliveira-Costa A.Bowman J.D.,Briggs F.H.Gaensler B.M.Hernquist L.L.Mitchell D.A.Morales M.F.,Sethi S.K.Subrahmanyan R.Sadler E.M.Arcus W.Barnes D.G.,Bernardi G.Bunton J.D.Cappallo R.C.Crosse B.W.Corey B.E.,Deshpande A.deSouza L.Emrich D.Goeke R.F.Greenhill L.J.,Hazelton B.J.Herne D.Kaplan D.L.Kasper J.C.Kincaid B.B.Koenig R.,Kratzenberg E.Lonsdale C.J.Lynch M.J.McWhirter S.R.Morgan E.H.,Oberoi D.Ord S.M.Pathikulangara J.Prabu T.Remillard R.A.,Rogers A.E.E.Roshi D.A.Salah J.E.Sault R.J.Udaya Shankar N.,Srivani K.S.Stevens J.B.Tingay S.J.Wayth R.B.Waterson M.,Webster R.L.Whitney A.R.Williams A.J.Wyithe J.S.B.2014-04-23T08:45:16Z2014-04-09T09:43:42ZCDS support team

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

cds-question@unistra.frradio-sourcesinterferometryradio-continuum-emissionsurveysThe Murchison Widefield Array (MWA) is a new low-frequency, wide field-of-view radio interferometer under development at the Murchison Radio-astronomy Observatory in Western Australia. We have used a 32 element MWA prototype interferometer (MWA-32T) to observe two 50{deg} diameter fields in the southern sky, covering a total of ~2700deg^2^, in order to evaluate the performance of the MWA-32T, to develop techniques for epoch of reionization experiments, and to make measurements of astronomical foregrounds. We developed a calibration and imaging pipeline for the MWA-32T, and used it to produce ~15' angular resolution maps of the two fields in the 110-200MHz band. We perform a blind source extraction using these confusion-limited images, and detect 655 sources at high significance with an additional 871 lower significance source candidates. We compare these sources with existing low-frequency radio surveys in order to assess the MWA-32T system performance, wide-field analysis algorithms, and catalog quality. Our source catalog is found to agree well with existing low-frequency surveys in these regions of the sky and with statistical distributions of point sources derived from Northern Hemisphere surveys; it represents one of the deepest surveys to date of this sky field in the 110-200MHz band.2012ApJ...755...47Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/755/47CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVIII/79 : The VLA Low-frequency Sky Survey at 74MHz (Cohen+ 2007)VIII/65 : 1.4GHz NRAO VLA Sky Survey (NVSS) (Condon+ 1998)VIII/38 : The Parkes-MIT-NRAO 4.85GHz (PMN) Surveys (Griffith+ 1993-1996)VIII/18 : 6C Survey of radio sources I. (Baldwin+ 1985)J/ApJ/734/L34 : 145MHz source measurements by PAPER (Jacobs+, 2011)J/ApJ/734/98 : DISCS. II. Southern sky disk data (Oberg+, 2011)J/MNRAS/381/341 : MRCR-SUMSS Ultra-steep-spectrum (USS) cat. (Broderick+, 2007)J/AJ/123/637 : Ultra-steep-spectrum radio sources (De Breuck +, 2002)J/AZh/77/21 : 102.5MHz Survey (Dagkesamanskii+, 2000)J/A+AS/143/303 : Ultra steep spectrum radio sources catalog (De Breuck+ 2000)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/755/47https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/755/47http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/755/47https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/755/47https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/755/47http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/755/47GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/755/47/table2 (Detected sources in the the Hydra A and EoR2 fields)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/755/47/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/755/47/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/755/47/table2?GETtext/xml+votable180.050000true116.77-18.90.0055555555555555565/6669 6/4116 4119 4121 4140 4146 4161 4174 4235 4245 4352 4372 21575 21587 21588 21596 21599 21768 21774 21776 21779 21780 21785 21789 21797 21811 21817 21836 21839 21847 21869 21905 21955 21979 21982 24749 24761 24766 24809 25113 25119 25126 25130 25131 25136 25142 25144 25145 25170 25178 25179 25188 25194 25196 25198 25202 25204 25209 25216 25224 25226 25228 25231 25233 25237 25239 25243 25244 25251 25253 25255 25256 25258 25260 25263 25264 25269 25270 25272 25275 25277 25279 25281 25285 25292 25301 25302 25304 25309 25315 25320 25321 25323 25326 25330 25332 25333 25337 25340 25343 25346 25384 25385 25391 25400 25472 25475 25479 25485 25489 25514 25522 25530 25574 26630 26633 26636 26639 26640 26643 26644 26652 26654 26657 26661 26663 26667 26668 26671 26672 26673 26675 26681 26683 26684 26688 26690 26691 26695 26698 26702 26703 26704 26707 26708 26713 26716 26717 26728 26730 26733 26736 26740 26742 26744 26752 26754 26758 26759 26763 26764 26767 26769 26772 26775 26777 26779 26781 26783 26794 26795 26797 26806 26808 26818 26819 26825 26830 26833 26834 26841 26846 26849 26850 26851 26853 26857 26858 26861 26863 26867 26869 26873 26886 26889 26896 26903 26904 26905 26908 26909 26912 26915 26916 26927 26928 26932 26934 26936 26937 26938 26946 26968 26982 26984 26993 27017 27021 27022 27023 27025 27026 27028 27030 27045 27049 27050 27052 27054 27055 27056 27057 27058 27060 27062 27069 27080 27086 27097 27102 27104 27108 27117 27138 27139 27140 27147 27149 27153 27154 27157 27158 27160 27165 27168 27175 27177 27181 27184 27198 27201 27206 27207 27209 27213 27217 27233 27234 27236 27238 27241 27242 27243 27253 27264 27272 27285 27298 27310 27337 27345 27366 27374 27377 27382 27383 27392 27394 27397 27408 27418 27420 27421 27425 27431 27442 27448 27470 27484 27514 27524 27532 27537 27580 27588 38642 38644 38705 38714 38718 38725 38738 38759 38763 38765 38769 38774 38777 38791 38793 38800 38803 38805 38810 38815 38828 38833 38836 38838 38843 38845 38853 38857 38859 38860 38872 38877 38883 38884 38885 38888 38891 38893 38897 38898 38899 38900 38906 38911 39804 39961 39980 39982 40011 40012 40023 40027 40029 40034 40035 40048 40051 40055 40057 40066 40089 40092 40103 40104 40119 40135 40137 40141 40142 40147 40151 40153 40159 40168 40174 40175 40176 40184 40189 40190 40194 40195 40199 40200 40209 40215 40216 40217 40223 40228 40235 40239 40240 40245 40246 40248 40252 40254 40255 40257 40264 40265 40268 40275 40276 40278 40279 40283 40290 40294 40297 40298 40304 40307 40314 40323 40329 40332 40339 40344 40347 40348 40350 40353 40354 40357 40360 40362 40365 40371 40375 40376 40378 40379 40383 40385 40387 40395 40400 40405 40406 40412 40413 40415 40421 40427 40431 40432 40433 40439 40441 40442 40444 40445 40446 40463 40473 40477 40493 40506 40515 40518 40522 40527 40529 40530 40533 40538 40540 40542 40543 40547 40550 40552 40554 40555 40557 40561 40569 40571 40572 40574 40579 40599 40607 40613 40615 40640 40645 40648 40652 40653 40658 40659 40661 40664 40665 40667 40670 40675 40687 40692 40693 40700 40701 40704 40706 40709 40711 40713 40715 40722 40725 40726 40730 40731 40733 40736 40742 40744 40747 40749 40750 40751 40756 40757 40760 40763 40764 40768 40769 40775 40777 40779 40789 40794 40795 40799 40802 40803 40815 40822 40823 40825 40826 40830 40831 40832 40837 40838 40841 40848 40849 40851 40854 40859 40861 40873 40879 40883 40886 40887 40894 40895 40899 40905 40909 40910 40916 40917 40922 40923 40924 40926 40931 40940 40941 40946 40950 409598.184521250463989e-26 1.2255577797937021e-25https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/755/47?format=asciiRadiodefaultJ/ApJ/755/47/table2Detected sources in the the Hydra A and EoR2 fieldsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMWAMWA (Murchison Widefield Array) Source Name (JHHMM+DDMM)meta.id;meta.maincharRAJ2000MWA Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000MWA Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainSAVG[0.7/714] MWA Source flux density in average map at 154.24MHz, bandwidth 92MHz (1)Jyphot.flux.density;em.radio.100-200MHzfloate_SAVG[0.2/215] SAVG uncertainty (2)Jystat.errorfloatS124[0.3/706]? MWA Source flux density in 123.52MHz map (1)Jyphot.flux.density;em.radio.100-200MHzfloatnullablee_S124? Uncertainty in S124 (2)Jystat.errorfloatnullableS154[0.5/653]? MWA Source flux density in 154.24MHz map (1)Jyphot.flux.density;em.radio.100-200MHzfloatnullablee_S154? Uncertainty in S154 (2)Jystat.errorfloatnullableS185[0.5/554]? MWA Source flux density in 184.96MHz map (1)Jyphot.flux.density;em.radio.100-200MHzfloatnullablee_S185? Uncertainty in S185 (2)Jystat.errorfloatnullableFieldField (EOR2 of HydA) (4)meta.id;obs.fieldcharRfc[0/25] Source distance from center of fielddegpos.angDistancefloatSNR[5/2576] Source signal-to-noise ratio in detection image (3)stat.snrfloat