VIII/87ivo://CDS.VizieR/VIII/87CDSCroft S.Bower G.C.Ackermann R.Atkinson S.Backer D.Backus P.,Barott W.C.Bauermeister A.Blitz L.Bock D.Bradford T.Cheng C.,Cork C.Davis M.De Boer D.Dexter M.Dreher J.Engargiola G.,Fields E.Fleming M.Forster J.R.Gutierrez-Kraybill C.Harp G.,Helfer T.Hull C.Jordan J.Jorgensen S.Keating G.Kilsdonk T.,Law C.Van Leeuwen J.Lugten J.MacMahon D.McMahon P.Milgrome O.,Pierson T.Randall K.Ross J.Shostak S.Siemion A.Smolek K.,Tarter J.Thornton D.Urry L.Vitouchkine A.Wadefalk N.Welch J.,Werthimer D.Whysong D.Williams P.K.G.Wright M.2012-06-30T16:29:28Z2012-06-11T14:30:24ZCDS support team

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

cds-question@unistra.frradio-continuum-emissionradio-sourcessurveysWe present the Allen Telescope Array Twenty-centimeter Survey (ATATS), a multi-epoch (12 visits), 690deg^2^ radio image and catalog at 1.4GHz. The survey is designed to detect rare, very bright transients as well as to verify the capabilities of the ATA to form large mosaics. The combined image using data from all 12 ATATS epochs has rms noise {sigma}=3.94mJy/beam and dynamic range 180, with a circular beam of 150" FWHM. It contains 4408 sources to a limiting sensitivity of 5{sigma}=20mJy/beam. We compare the catalog generated from this 12 epoch combined image to the NRAO VLA Sky Survey (NVSS), a legacy survey at the same frequency, and find that we can measure source positions to better than ~20". For sources above the ATATS completeness limit, the median flux density is 97% of the median value for matched NVSS sources, indicative of an accurate overall flux calibration. We examine the effects of source confusion due to the effects of differing resolution between ATATS and NVSS on our ability to compare flux densities. We detect no transients at flux densities greater than 40mJy in comparison with NVSS and place a 2{sigma} upper limit of 0.004deg^-2^ on the transient rate for such sources. These results suggest that the >~1Jy transients reported by Matsumara et al. may not be true transients, but rather variable sources at their flux density threshold.2010ApJ...719...45Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/VIII/87CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVIII/65 : 1.4GHz NRAO VLA Sky Survey (NVSS) (Condon+ 1998)J/A+A/535/A38 : Observations of NOAO Bootes field at 153MHz (Intema+, 2011)J/ApJ/716/530 : Mid-IR variability from the SDWFS (Kozlowski+, 2010)J/AJ/130/923 : Faint radio sources in the NOAO Bootes field (Wrobel+, 2005)J/AJ/123/1784 : 1.4 GHz imaging of the Bootes field (de Vries+, 2002)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=VIII/87https://vizier.iucaa.in/viz-bin/VizieR-2?-source=VIII/87http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=VIII/87https://vizier.cds.unistra.fr/viz-bin/votable?-source=VIII/87https://vizier.iucaa.in/viz-bin/votable?-source=VIII/87http://vizieridia.saao.ac.za/viz-bin/votable?-source=VIII/87GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table VIII/87/table2 (The ATATS catalog (erratum version: vol.724, p.827 (2010)))https://vizier.cds.unistra.fr/viz-bin/conesearch/VIII/87/table2?https://vizier.iucaa.in/viz-bin/conesearch/VIII/87/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/VIII/87/table2?GETtext/xml+votable180.050000true193.9653.0641670.0055555555555555563/164 165 176 4/566 569 570 571 572 574 645 647 653 655 664 669 670 688 689 692 712 5/2237 2238 2239 2254 2255 2270 2273 2274 2275 2292 2294 2295 2300 2302 2472 2474 2475 2478 2573 2575 2577 2578 2579 2584 2585 2587 2609 2611 2617 2661 2662 2663 2664 2665 2667 2668 2670 2671 2672 2673 2675 2684 2686 2708 2709 2711 2761 2764 2765 2767 2772 2773 2774 2776 2777 2778 2834 2840 2852 2853 2857 6/8927 8943 8947 8991 9007 9011 9013 9014 9015 9032 9034 9035 9086 9091 9172 9174 9204 9205 9206 9212 9213 9215 9866 9867 9894 9895 10271 10344 10345 10433 10465 10477 10479 10640 10641 10642 10664 10665 10666 10678 10679 10696 10697 10698 10740 10748 10750 10751 11041 11043 11053 11064 11065 11067 11100 11116 11120 11153 11156 11157 11200 11330 11342 11343 11364 11365 11366 11368 11369 11370 11372 11416 11417 11418 11420 11432 11433 11434 11436 11440 11456 117769.276497240453405e-25 9.932213363424795e-25https://cdsarc.cds.unistra.fr/viz-bin/moc/VIII/87?format=asciiRadiodefaultVIII/87/table2The ATATS catalog (erratum version: vol.724, p.827 (2010))recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000[12/15] Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000[26/55] Degree of Declination (J2000)pos.eq.dec;meta.mainS20cmATATS flux density (20cm)mJyphot.flux.density;em.radio.750-1500MHzfloatbgBackground rmsmJyinstr.backgroundfloatamajMajor axis sizearcsecphys.angSizefloataminMinor axis sizearcsecphys.angSize;srcfloatPAPosition angledegpos.posAngfloatNNVSS[0/4] Number of nearby NVSS sources within 75" of ATATS positionmeta.numberintSNVSSTotal NVSS flux density (1.4GHz)mJyphot.flux.density;em.radio.750-1500MHzfloatNVSSActual counts of NVSS catalog matches within 75" (includes also the faint sources)meta.ref.urlintnullable