J/ApJS/205/13ivo://CDS.VizieR/J/ApJS/205/13doi:10.26093/cds/vizier.22050013CDSMiller N.A.Bonzini M.Fomalont E.B.Kellermann K.I.Mainieri V.,Padovani P.Rosati P.Tozzi P.Vattakunnel S.2017-12-12T14:45:28Z2013-05-15T06:27:19ZCDS support team

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

cds-question@unistra.frradio-sourcessurveysgalaxy-classification-systemsDeep radio observations at 1.4GHz for the Extended Chandra Deep Field South were performed in 2007 June through September and presented in a first data release. The survey was made using six separate pointings of the Very Large Array with over 40hr of observation per pointing. In the current paper, we improve on the data reduction to produce a second data release (DR2) mosaic image. This DR2 image covers an area of about a third of a square degree, reaches a best rms sensitivity of 6uJy, and has a typical sensitivity of 7.4uJy per 2.8" by 1.6" beam. We also present a more comprehensive catalog, including sources down to peak flux densities of five or more times the local rms noise along with information on source sizes and relevant pointing data. We discuss in some detail the consideration of whether sources are resolved under the complication of a radio image created as a mosaic of separate pointings each suffering some degree of bandwidth smearing, and the accurate evaluation of the flux densities of such sources. Finally, the radio morphologies and optical/near-IR counterpart identifications are used to identify 17 likely multiple-component sources and arrive at a catalog of 883 radio sources, which is roughly double the number of sources contained in the first data release.2013ApJS..205...13Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/205/13CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/179/114 : VLA 1.4GHz survey of E-CDF-S (DR1) (Miller+, 2008)J/ApJ/698/740 : VLA survey of CDF-S. III. (Tozzi+, 2009)J/MNRAS/420/2190 : ECDFS sources with radio counterparts (Vattakunnel+, 2012)J/ApJS/203/15 : Counterparts to 1.4GHz sources in ECDF-S (Bonzini+, 2012)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/205/13https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/205/13http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/205/13https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/205/13https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/205/13http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/205/13GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/205/13/table3 (Main catalog of radio sources)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/205/13/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/205/13/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/205/13/table3?GETtext/xml+votable180.050000true52.7945417-28.05633330.005555555555555556Cone search capability for table J/ApJS/205/13/table4 (Individual components of the 17 multiple-component radio sources)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/205/13/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/205/13/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/205/13/table4?GETtext/xml+votable180.050000true52.8082917-27.92219440.0055555555555555566/35934 35935 359579.276497240453405e-25 9.276497240453405e-25https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/205/13?format=asciiOpticalRadiodefaultJ/ApJS/205/13/table3Main catalog of radio sourcesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000[3] Hours of Right Ascension (J2000) (1)pos.eq.ra;meta.mainDEJ2000[27/28] Degree of Declination (J2000) (1)pos.eq.dec;meta.mainSNR[5/3055]? Signal-to-noise of peak flux densityphot.flux.density;stat.maxfloatnullableSp[30/22300]? Peak flux density at 1.4GHz; in microJy/beamuJyphot.flux.density;em.radio.750-1500MHzfloatnullablee_Sp[6.1/12.1]? Error in Sp; microJy/beamuJystat.error;src.spTypefloatnullableSi[15.9/90450] Integrated flux density at 1.4GHzuJyphot.flux.density;em.radio.750-1500MHzfloate_Si[6.9/168.5] Error in SiuJystat.errorfloatMaj[1.9/18.7]? Major axis from mosaic image (2)arcsecphys.angSizefloatnullableMin[0.8/9.2]? Minor axis from mosaic image (2)arcsecphys.angSize;srcfloatnullablePAmos? Position angle from mosaic image (2)degpos.posAngintnullableBest[1/6] Index number of pointing with lowest RMS at source positionmeta.id;obsintRMS[9.3/15.2] RMS at source position in best n pointing; microJy/beamuJyinstr.det.noisefloatMajLo? Lower limit to major axis size (3)arcsecphys.angSizefloatnullableMajHi? Upper limit to major axis size (3)arcsecphys.angSizefloatnullableMinLo? Lower limit to minor axis size (3)arcsecphys.angSize;srcfloatnullableMinHi? Upper limit to minor axis size (3)arcsecphys.angSize;srcfloatnullablePAbest? Position angle (3)degpos.posAngintnullableExt?[0/1]? Flag indicating whether source was resolved in envelope test (4)meta.codeintnullableFC[IP] Prescription for recommended flux density, Integrated ot Peak (5)meta.codecharPnts[ 1-6] Pointings contributing to mosaic image at source position (10)meta.id;obscharK08ID of source in K08 (J/ApJS/179/71) (6)meta.id.assoccharSk? K08 source 1.4GHz flux densityuJyphot.flux.density;em.radio.750-1500MHzintnullablee_Sk[8/1200]? Error in SkuJystat.errorintnullablel_SizeLimit flag on Size (7)meta.code.error;phys.angSizecharSize[0/70]? K08 1.4GHz deconvolved source sizearcsecphys.angSizefloatnullableRem[a-g, ] Flag(s) indicating notes on source (8)meta.notecharFigID of multiple source in table4meta.bib.figintnullableDR1Display the DR1 data (Cat. J/ApJS/179/114) within 1"meta.ref.urlintnullableB12Display data from Bonzini+, 2012 (Cat. J/ApJS/203/15) for this sourcemeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/ApJS/205/13/table4Individual components of the 17 multiple-component radio sourcesSeq[1/17]? Running sequence number for multi-component source (table 4 only)meta.id;meta.mainintnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000[3] Hours of Right Ascension (J2000) (1)pos.eq.ra;meta.mainDEJ2000[27/28] Degree of Declination (J2000) (1)pos.eq.dec;meta.mainSNR[5/3055]? Signal-to-noise of peak flux densityphot.flux.density;stat.maxfloatnullableSp[30/22300]? Peak flux density at 1.4GHz; in microJy/beamuJyphot.flux.density;em.radio.750-1500MHzfloatnullablee_Sp[6.1/12.1]? Error in Sp; microJy/beamuJystat.error;src.spTypefloatnullableSi[15.9/90450] Integrated flux density at 1.4GHzuJyphot.flux.density;em.radio.750-1500MHzfloate_Si[6.9/168.5] Error in SiuJystat.errorfloatMaj[1.9/18.7]? Major axis from mosaic image (2)arcsecphys.angSizefloatnullableMin[0.8/9.2]? Minor axis from mosaic image (2)arcsecphys.angSize;srcfloatnullablePAmos? Position angle from mosaic image (2)degpos.posAngintnullableBest[1/6] Index number of pointing with lowest RMS at source positionmeta.id;obsintRMS[9.3/15.2] RMS at source position in best n pointing; microJy/beamuJyinstr.det.noisefloatMajLo? Lower limit to major axis size (3)arcsecphys.angSizefloatnullableMajHi? Upper limit to major axis size (3)arcsecphys.angSizefloatnullableMinLo? Lower limit to minor axis size (3)arcsecphys.angSize;srcfloatnullableMinHi? Upper limit to minor axis size (3)arcsecphys.angSize;srcfloatnullablePAbest? Position angle (3)degpos.posAngintnullableExt?[0/1]? Flag indicating whether source was resolved in envelope test (4)meta.codeintnullableFC[IP] Prescription for recommended flux density, Integrated ot Peak (5)meta.codecharPnts[ 1-6] Pointings contributing to mosaic image at source position (10)meta.id;obscharK08ID of source in K08 (J/ApJS/179/71) (6)meta.id.assoccharSk? K08 source 1.4GHz flux densityuJyphot.flux.density;em.radio.750-1500MHzintnullablee_Sk[8/1200]? Error in SkuJystat.errorintnullablel_SizeLimit flag on Size (7)meta.code.error;phys.angSizecharSize[0/70]? K08 1.4GHz deconvolved source sizearcsecphys.angSizefloatnullableFig? Multiple component number corresponding in table 4 (for flag "b" in table 3) or figure number in table 4 (9)meta.bib.figintnullableDR1Display the DR1 data (Cat. J/ApJS/179/114) within 1"meta.ref.urlintnullable