J/ApJS/177/255ivo://CDS.VizieR/J/ApJS/177/255doi:10.26093/cds/vizier.21770255CDSLaw C.J.Yusef-Zadeh F.Cotton W.D.Maddalena R.J.2009-10-09T09:18:47Z2009-10-09T09:11:23ZCDS support team

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

cds-question@unistra.frradio-sourcessurveysWe describe the results of a radio continuum survey of the central 4{deg}x1{deg} with the 100m Green Bank Telescope (GBT) at wavelengths of 3.5, 6, 20, and 90cm. The 3.5 and 6cm surveys are the most sensitive and highest resolution single-dish surveys made of the central degrees of our Galaxy. We present catalogs of compact and extended sources in the central 4{deg} of our Galaxy, including detailed spectral index studies of all sources. The analysis covers star-forming regions such as Sgr B and Sgr C, where we find evidence of a mixture of thermal and nonthermal emission. The analysis quantifies the relative contribution of thermal and nonthermal processes to the radio continuum flux density toward the Galactic center (GC) region. In the central 4{deg}x1{deg} of the GC, the thermal and nonthermal flux fractions for all compact and diffuse sources are 28%/72% at 3.5cm and 19%/81% at 6cm. The total flux densities from these sources are 783+/-52 and 1063+/-93Jy at 3.5 and 6cm, respectively, excluding the contribution of Galactic synchrotron emission.2008ApJS..177..255Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/177/255CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/118/201 : Galactic Center 6 and 20cm survey (Lazio+, 1998)J/ApJS/155/421 : Survey of Galactic Center region at 20cm (Yusef-Zadeh+, 2004)J/ApJS/174/481 : Compact Galactic Center Radio Sources (Lazio+, 2008)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/177/255https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/177/255http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/177/255https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/177/255https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/177/255http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/177/255GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/177/255/compact (3.5cm compact source catalog for GC region and 6cm compact source catalog for GC region (table 2 (3.5cm) and table 3 (6cm) of the paper))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/177/255/compact?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/177/255/compact?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/177/255/compact?GETtext/xml+votable180.050000true267.167875-28.02319440.005555555555555556Cone search capability for table J/ApJS/177/255/extended (Extended source catalog for 3.5 and 6cm GBT observations of GC region (table 5 of the paper))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/177/255/extended?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/177/255/extended?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/177/255/extended?GETtext/xml+votable180.050000true265.070833-30.970.0055555555555555565/7206 7207 6/28813https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/177/255?format=asciiRadiodefaultJ/ApJS/177/255/compact3.5cm compact source catalog for GC region and 6cm compact source catalog for GC region (table 2 (3.5cm) and table 3 (6cm) of the paper)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintcm[3.5 6] Wavelengthcmem.wlchar[LYC2008]Number designation (G1)meta.id;meta.mainintGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latfloatRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainSpSource peak brightness at 3.5cm or 6cm in Jansky/beam (1)Jyphot.flux.density;em.radiofloate_SpError on Sp in Jansky/beam (1)Jystat.error;src.spTypedoubleSiSource flux density at 3.5cm or 6cmJyphot.flux.density;em.radiofloate_SiError on SiJystat.errordoublemajMajor axis of the best-fit Gaussian to sourcearcsecphys.angSizefloatminMinor axisarcsecphys.angSize;srcfloatPAPosition angledegpos.posAngintSH92? Flux density at 3.5cm given in Haynes et al. (1992A&A...264..500H)Jyphot.flux.density;em.radio.6-12GHzfloatnullablee_SH92? Error on SH92%stat.errorintnullableJ/ApJS/177/255/extendedExtended source catalog for 3.5 and 6cm GBT observations of GC region (table 5 of the paper)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameDesignation (G1)meta.id;phys.atmol.configurationcharn_Name[ab] Thermal or non-thermal emission (1)meta.notecharGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latfloatRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainReffEffective radiusarcminphys.angSizefloatS3.5r3.5cm raw source flux densityJyphot.flux.density;em.radio.6-12GHzfloatn_S3.5r[cd] Source included ion background (2)meta.notechare_S3.5rrms uncertainty on S3.5r measured in a background region in Jansky/beamJystat.errordoubleS3.5iBackground-subtracted flux density at 3.5cmJyphot.flux.density;em.radio.6-12GHzfloate_S3.5iError on S3.5iJystat.errorfloatS6.0r6cm raw source flux densityJyphot.flux.density;em.radio.3-6GHzfloatn_S6.0r[cd] Source included ion background (2)meta.notechare_S6.0rrms uncertainty on S6.0r measured in a background region in Jansky/beamJystat.errordoubleS6.0iBackground-subtracted flux density at 6cmJyphot.flux.density;em.radio.3-6GHzfloate_S6.0iError on FSi6Jystat.errorfloat