LofarTier1 Cone Searchivo://astron.nl/lofartier1/lofartier1.xml/coneASTRONShimwell, T.2018-08-09T15:30:23Michael Sipior

Oude Hoogeveensedijk 4, 7991PD Dwingeloo, the Netherlands

vo@astron.nlCatalogs The LOFAR HBA Tier-1 preliminary data release contains images and catalogs that characterise the low-frequency radio emission in the region of the HETDEX Spring Field. In excess of 40,000 sources are detected in the images that cover an area of over 350 square degrees, have a resolution of 25 arcsec, and typical noise levels of less than 0.5 mJy/beam.https://vo.astron.nl/lofartier1/lofartier1.xml/cone/infoRadiolofartier1 The LOFAR HBA Tier-1 preliminary data release contains images and catalogs that characterise the low-frequency radio emission in the region of the HETDEX Spring Field. In excess of 40,000 sources are detected in the images that cover an area of over 350 square degrees, have a resolution of 25 arcsec, and typical noise levels of less than 0.5 mJy/beam.lofartier1.main The LOFAR HBA Tier-1 preliminary data release contains images and catalogs that characterise the low-frequency radio emission in the region of the HETDEX Spring Field. In excess of 40,000 sources are detected in the images that cover an area of over 350 square degrees, have a resolution of 25 arcsec, and typical noise levels of less than 0.5 mJy/beam.source_idSource ID, formed as Jhhmmss+ddmmss using the IAU convention.meta.id;meta.maincharindexedprimaryraSource J2000 Right Ascension, in decimal degrees.degpos.eq.ra;meta.maindoubleindexede_raError in source J2000 Right Ascension, in arcseconds This is the formal error based on the source position fit.arcsecstat.error;pos.eq.radoublee_ra_totError in source J2000 Right Ascension, in arc seconds. This includes the formal error based on the source position fit and the systematic positional error.arcsecstat.error;pos.eq.radoubledecSource J2000 Declination, in decimal degrees.degpos.eq.dec;meta.maindoubleindexede_decError in source J2000 Declination, in arcseconds This is the formal error based on the source position fit.arcsecstat.error;pos.eq.decdoublee_dec_totTotal error in source J2000 Declination, in arc seconds. This includes the formal error based on the source position fit and the systematic positional error.arcsecstat.error;pos.eq.decdoublepeak_fluxSource peak flux density, in mJy/beammJy/beamdoublenullablee_peak_fluxError in the source peak flux density in mJy/beam. This is the formal error based on the source position fit.mJy/beamdoublenullablee_peak_flux_totTotal error in the source peak flux density in mJy/beam. This includes the formal error based on the source position fit and the flux.mJy/beamdoublenullabletotal_fluxSource integrated flux density, in mJymJydoublenullablee_total_fluxError in the source integrated flux density in mJy. This is the formal error based on the source position fit.mJydoublenullablee_total_flux_totTotal error in the source integrated flux density in Jy. This includes the formal error based on the source position fit and the flux.mJydoublenullableresolvedA flag indicating whether the source is resolved (R) or unresolved (U).charnullableisl_rmsThe local rms noise in mJy/beammJy/beamdoublenullables_codeA code the defines the source structure in terms of the fitted Gaussian components: ’S’ indicates an isolated source that is fit with a single Gaussian; ‘C’ represents sources that are fit by a single Gaussian but are within an island of emission that also contains other sources; and ‘M’ is used for sources with are extended and fit with multiple Gaussians.charnullablemosaic_idThe name of the mosaic from which the the source entry was extracted.charnullable