J/ApJS/174/481ivo://CDS.VizieR/J/ApJS/174/481doi:10.26093/cds/vizier.21740481CDSLazio T.J.W.Cordes J.M.2017-12-15T10:54:42Z2009-09-03T09:46:17ZCDS support team

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

cds-question@unistra.frastronomical-object-identificationpulsarsradio-sourcesWe have used the VLA at 1.4GHz to survey the inner 2{deg} of the Galactic center for radio pulsar candidates. Because of the large pulse broadening suffered by Galactic center radio pulsars, our strategy has been to identify compact radio sources, without regard to whether they are pulsed radio sources. We describe our survey and present the catalog of 170 sources. Comparison with other radio surveys of the area shows that just over half of these sources have not been detected previously; this same comparison reveals 29 sources that are not in higher frequency surveys, suggesting that the sources are either variable or steep spectrum, and a comparable number of sources in other surveys that should have been detected in this survey but were not. Comparison with infrared surveys shows that 59 (35%) sources have infrared counterparts and are likely to be HII regions.2008ApJS..174..481Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/174/481CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVIII/42 : Texas Survey of radio sources at 365MHz (Douglas+ 1996)VIII/65 : 1.4GHz NRAO VLA Sky Survey (NVSS) (Condon+ 1998)J/ApJS/74/181 : Small-diameter radiosources catalogue (Zoonematkermani+, 1990)J/ApJS/91/347 : A 5-GHz VLA Survey of the Galactic Plane (Becker+ 1994)J/A+AS/136/571 : Pulsars identified from the NRAO VLA Sky Survey (Han+ 1999)J/AJ/128/1646 : The Galactic Center region at 330MHz (Nord+, 2004)J/ApJS/171/376 : MOJAVE. III. VLA 1.4GHz images (Cooper+, 2007)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/174/481https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/174/481http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/174/481https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/174/481https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/174/481http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/174/481GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/174/481/table2 (The 2LC Catalog of Compact Radio Sources Toward the Galactic Center (1.4GHz))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/174/481/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/174/481/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/174/481/table2?GETtext/xml+votable180.050000true267.27983333-29.393027780.005555555555555556Cone search capability for table J/ApJS/174/481/table3 (*The 2LC 5GHz Survey)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/174/481/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/174/481/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/174/481/table3?GETtext/xml+votable180.050000true265.6833875-29.821105560.0055555555555555565/7207 6/28825 28827 28849 28852https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/174/481?format=asciiRadiodefaultJ/ApJS/174/481/table2The 2LC Catalog of Compact Radio Sources Toward the Galactic Center (1.4GHz)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_2LCSimbad column added by the CDSmeta.ref.urlchar2LCName (LLL.lll+B.bbb) (G1)meta.id;meta.maincharprimaryRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainSpPeak intensity of source in mJy/beam (1)mJyphot.flux.density;em.radio.750-1500MHzfloatSFlux density of source (1)mJyphot.flux.density;em.radio.750-1500MHzfloatthetaAngular diameter of source (1)arcsecphys.angSizefloatOffset? Angular offset of source from phase center of field (table2 only) (1)arcminpos.angDistancefloatnullableSEDShow a SED plot in SPECFIND (Cat. VIII/85)meta.ref.urlcharJ/ApJS/174/481/table3*The 2LC 5GHz SurveySpPeak intensity of source in mJy/beam (1)mJyphot.flux.density;em.radio.3-6GHzfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2LCName (LLL.lll+B.bbb) (G1)meta.id;meta.maincharRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainSFlux density of source (1)mJyphot.flux.density;em.radio.3-6GHzfloatthetaAngular diameter of source (1)arcsecphys.angSizefloatalpha? Spectral index between 1.4 and 5GHz (S_nu_{prop.to}nu^alpha^) (table3 only) (1)spect.indexfloatnullableSEDShow a SED plot in SPECFIND (Cat. VIII/85)meta.ref.urlcharJ/ApJS/174/481/table4Cross-IdentificationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2LCName (LLL.lll+B.bbb) (G1)meta.id;meta.maincharS1.4? Flux density at 1.4GHzmJyphot.flux.density;em.radio.750-1500MHzfloatnullabletheta? Angular diameterarcsecphys.angSizefloatnullableGPSRName (LLL.lll+B.bbb) in Zoonematkermani et al. 1990, Cat. J/ApJS/74/181 (1)meta.idcharSRatio? Flux density ratiophot.flux;arith.ratiofloatnullableGPSR5Name (LLL.lll+B.bbb) in Becker et al. 1994, Cat. J/ApJS/91/347 (2)meta.idcharalpha? Spectral index between 1.4 and 5GHz (S_nu_{prop.to}nu^alpha^)spect.indexfloatnullableTXSName (HHMM+DDd) in Texas Survey, Douglas et al. 1996, Cat. VIII/42 (3)meta.idcharalpha1? Spectral index between 0.37 and 1.4GHzspect.indexfloatnullable