J/ApJS/155/421ivo://CDS.VizieR/J/ApJS/155/421doi:10.26093/cds/vizier.21550421CDSYusef-Zadeh F.Hewitt J.W.Cotton W.2014-01-15T08:37:08Z2006-01-01T13:37:19ZCDS support team

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

cds-question@unistra.frradio-sourcessurveysThis is the first in a series of papers presenting a sensitive 20cm VLA continuum survey of the Galactic center region using new and archival data based on multiconfiguration observations taken with relatively uniform uv coverage. The high dynamic range images cover the regions within -2{deg}<l<5{deg} and -40'<b<40' with a spatial resolution of ~30" and 10". The wide field imaging technique is used to construct a low-resolution mosaic of 40 overlapping pointings. The mosaic image includes the Effelsberg observations filling the low spatial frequency uv data. We also present high-resolution images of 23 overlapping fields using DnC and CnB array configurations. These high-resolution images are sensitive to both compact and extended continuum features with a wide range of angular scales with rms noise of 0.2mJy/beam in the outer parts of the Galactic center region. The survey has resulted in a catalog of 345 discrete sources as well as 140 images revealing structural details of HII regions, supernova remnants, pulsar wind nebulae, and more than 80 linear filaments distributed toward the complex region of the Galactic center.2004ApJS..155..421Yhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/155/421CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/128/1646 : The Galactic Center region at 330MHz (Nord+, 2004)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/155/421https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/155/421http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/155/421https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/155/421https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/155/421http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/155/421GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/155/421/table1 (Low-resolution VLA pointings combined with Effelsberg data at 20cm)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/155/421/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/155/421/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/155/421/table1?GETtext/xml+votable180.050000true268.9918333-25.07069440.005555555555555556Cone search capability for table J/ApJS/155/421/table2 (High-resolution VLA pointings at 20cm)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/155/421/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/155/421/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/155/421/table2?GETtext/xml+votable180.050000true268.9918333-25.07069440.005555555555555556Cone search capability for table J/ApJS/155/421/table3 (A list of radio filaments at 20cm)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/155/421/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/155/421/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/155/421/table3?GETtext/xml+votable180.050000true266.1348-29.43660.005555555555555556Cone search capability for table J/ApJS/155/421/table4 (20cm Survey Point Source Catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/155/421/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/155/421/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/155/421/table4?GETtext/xml+votable180.050000true268.8893795833-24.72503861110.0055555555555555565/7206 7207 6/28819 28874 28875 28878 28896 28897 28900 289019.932213363424795e-25 9.939104355462015e-25https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/155/421?format=asciiRadiodefaultJ/ApJS/155/421/table1Low-resolution VLA pointings combined with Effelsberg data at 20cmrmsrms noisemJystat.stdev;instr.det.noisefloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFieldField numbermeta.id;obs.fieldintprimaryGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latfloatRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainJ/ApJS/155/421/table2High-resolution VLA pointings at 20cmrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFieldField numbermeta.id;obs.fieldintprimaryGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latfloatRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of the Declination (J2000)pos.eq.dec;meta.mainrmsrms noisemJystat.stdev;instr.det.noisefloatres1Resolution of imagearcsecpos.angResolutionfloatres2Resolution of imagearcsecpos.angResolutionfloatPA[-90,90] Position angledegpos.posAngintNoteNote on the VLA array configurationmeta.notecharJ/ApJS/155/421/table3A list of radio filaments at 20cmrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSourceDesignation of radio filamentmeta.id.parentcharLabelLabel of nomenclature used on figuresmeta.idcharGNameIdentifier (also Galactic coordinates)meta.id;meta.maincharNTRF[YN] Detection of nonthermal radio filamentsmeta.codecharlengthLength of the filamentarcminphys.angSizefloatPAPosition angle (in Galactic frame)degpos.posAngintS20cm? Flux density at 20cm (1.5GHz)mJyphot.flux.density;em.radio.1500-3000MHzfloatnullablee_S20cm? Error in S20cmmJystat.errorfloatnullableRefsReferences to previously identified radio filaments, detailed in file refs.datmeta.ref;pos.framechar_GlonPosition, derived from GName (longitude part)degpos.galactic.lon_GlatPosition, derived from GName (latitude part)degpos.galactic.lat_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/155/421/refsReferencesComCommentmeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference numbermeta.id;meta.mainintBibcodeBibcodemeta.bib.bibcodecharAutAuthor's namemeta.bib.authorcharJ/ApJS/155/421/table420cm Survey Point Source CatalogrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGNameSource name (also Galactic coordinates)meta.id;meta.maincharRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.maine_RAJ2000Error in RAssstat.errordoubleDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.maine_DEJ2000Error in DEsarcsecstat.errordoubleSp20cmPeak flux density at 20cm, in units of mJy/beammJyphot.flux.density;em.radio.1500-3000MHzdoublee_Sp20cmError in Sp20cmmJystat.errordoubleSi20cmIntegrated flux density at 20cmmJyphot.flux.density;em.radio.1500-3000MHzdoublee_Si20cmError in Si20cmmJystat.errordoubleMajAxis? Major axisarcsecphys.angSizefloatnullableMinAxis? Minor axisarcsecphys.angSizefloatnullablePA[-90,178]? Position angle (in Galactic frame)degpos.posAngintnullableFieldField numbermeta.id;obs.fieldint