J/ApJS/118/201ivo://CDS.VizieR/J/ApJS/118/201doi:10.26093/cds/vizier.21180201CDSLazio T.J.W.Cordes J.M.2000-01-24T06:47:12Z2000-01-24T07:47:08ZCDS support team

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

cds-question@unistra.frradio-sourcesradio-continuum-emissionWe have used the VLA to survey 10 fields at 20 cm (1658MHz) and 11 fields at 6 cm (5GHz) that are between 7' and 137' from SgrA*. Our objective was to identify extragalactic sources and measure their scattering diameters so as to constrain the GC-scattering region separation. In order to find sources within these fields, we have employed pdfCLEAN, a source detection algorithm in which sources are identified in an image by comparing the intensity histogram of the image to that expected from a noise-only image. We found over 100 sources, with the faintest sources being approximately 3 mJy. The average number of sources per field is approximately 10, though fields close to SgrA* tend to contain fewer sources. A number of Galactic sources are included in our source catalog. The double-lobed source 1LC 359.872+0.178, potentially an X-ray quiet version of 1E 1740.7-2942, a shell-like structure with a central point source, and a possible radio transient, are discussed in the paper.1998ApJS..118..201Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/118/201CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/118/201https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/118/201http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/118/201https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/118/201https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/118/201http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/118/201GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/118/201/table3 (Sources from 1LC 20 centimeter Survey)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/118/201/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/118/201/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/118/201/table3?GETtext/xml+votable180.050000true265.05055-30.984669440.005555555555555556Cone search capability for table J/ApJS/118/201/table4 (Sources from 1LC 6 centimeter Survey)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/118/201/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/118/201/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/118/201/table4?GETtext/xml+votable180.050000true266.09828333-31.276636110.0055555555555555565/7207 7213 6/28813 28815 28818 28824 28826 28827 28897 28899 28900https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/118/201?format=asciiRadiodefaultJ/ApJS/118/201/table3Sources from 1LC 20 centimeter Survey1LCSource designationcharprimaryn_1LC[em] Note on 1LC (1)charrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intRAJ2000Right ascension (J2000.0)DEJ2000Declination (J2000.0)I1658MHz? Peak intensity at 1658MHz in mJy/beam, with a 5" beammJyfloatnullableS1658MHz? Integrated flux at 1658MHzmJyfloatnullablesi1658MHz? Apparent size at 1658MHzarcsecfloatnullableI1281MHz? Peak intensity at 1281MHz in mJy/beam, with a 5" beammJyfloatnullableS1281MHz? Integrated flux at 1281MHzmJyfloatnullablesi1281MHz? Apparent size at 1281MHzarcsecfloatnullableSI? Spectral index between 1281 and 1658MHz (2)floatnullableOffsetOffset from phase centerarcminfloatNotesNotes (3)charJ/ApJS/118/201/table4Sources from 1LC 6 centimeter Survey1LCSource designationcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intn_1LC[em] Note on 1LC (1)charRAJ2000Right ascension (J2000.0)DEJ2000Declination (J2000.0)I6cm? Peak intensity at 6cm in mJy/beam, with a 1.8" beammJyfloatnullableS6cm? Integrated flux at 6cmmJyfloatnullablesi6cm? Apparent size at 6cmarcsecfloatnullableSI? Spectral index between 6 and 20cm (2)floatnullableOffsetOffset from phase centerarcminfloatNotesNotes (3)char