VLAGOODSN ivo://nasa.heasarc/vlagoodsn NASA/GSFC HEASARC Morrison et al. 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Survey Source This table contains results from deep, new, wide-field radio continuum observations of the Great Observatories Origins Deep Survey-North (GOODS-North) field. (The GOODS-North field covers ~160 arcmin<sup>2</sup> centered on the Hubble Deep Field North (Williams et al. 1996, AJ, 112, 1335) and is unrivaled in terms of its ancillary data sets, which include extremely deep Chandra, Hubble Space Telescope (HST), and Spitzer observations, deep UBVRIJHK ground-based imaging and ~3500 spectroscopic redshifts from 8 to 10 m telescopes). The resulting 1.4-GHz map has a synthesized beam size of ~1.7" and an rms noise level of ~3.9 microJansky per beam (µJy/beam) near its center and ~8 µJy/beam at 15 arcminutes from phase center. The authors have cataloged 1230 discrete radio emitters, within a 40' x 40' region, above a 5-sigma detection threshold of ~20 uJy at the field center. New techniques, pioneered by Owen & Morrison (2008, AJ, 136, 1889), have enabled the authors to achieve a dynamic range of 6800:1 in a field that has significantly strong confusing sources. The authors compare the 1.4-GHz (20-cm) source counts with those from other published radio surveys. Their differential counts are nearly Euclidean below 100 uJy with a median source diameter of ~1.2". This adds to the evidence presented by Owen & Morrison that the natural confusion limit may lie near 1 uJy. If the Euclidean slope of the counts continues down to the natural confusion limit as an extrapolation of their log N-log S, this indicates that the cutoff must be fairly sharp below 1 uJy, else the cosmic microwave background temperature would increase above 2.7K at 1.4GHz. A useful combined total of 165 hours of NRAOS's Very Large Array (VLA) A-configuration 1.4-GHz observations were obtained between 2005 February and 2006 February, all done at night so as to avoid solar interference, for a region centered at RA and Dec of 12:36:49.4, +62:12:58 (J2000). (See Table 1 of the reference paper for the VLA observing log) This table was created by the HEASARC in September 2013 based on <a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/ApJS/188/178">CDS Catalog J/ApJS/188/178</a> file table2.dat This is a service provided by NASA HEASARC . 2010ApJS..188..178M https://heasarc.gsfc.nasa.gov/W3Browse/all/vlagoodsn.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=vlagoodsn& GET text/xml 180 99999 true 188.88475 61.88566667 0.0166666666666667 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=vlagoodsn GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_vlagoodsn&Action=More+Options&Action=Parameter+Search&ConeAdd=1 RADIO CATALOG 0.0166666666666667 Radio public vlagoodsn VLA GOODS-North Field 1.4-GHz Source Catalog name Source Designation (GOODS VLA JHHMMSS.ss+DDMMSS.s) meta.id;meta.main char nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable dec Declination degree pos.eq.dec;meta.main double nullable flux_1p4_ghz Observed Peak Brightness at 1.4GHz mJy/beam phot.flux.density;em.radio.750-1500MHz double nullable flux_1p4_ghz_error Error in Observed Peak Brightness at 1.4GHz mJy/beam stat.error;phot.flux.density;em.radio.750-1500MHz double nullable int_flux_1p4_ghz Total Flux Density at 1.4GHz mJy phot.flux.density;em.radio.750-1500MHz double nullable int_flux_1p4_ghz_error Error in Total Flux Density at 1.4GHz mJy stat.error;phot.flux.density;em.radio.750-1500MHz double nullable major_axis Fitted Gaussian Major Axis FWHM arcsec phys.angSize.smajAxis double nullable minor_axis Fitted Gaussian Minor Axis FWHM arcsec phys.angSize.sminAxis double nullable position_angle Fitted Position Angle degree pos.posAng short nullable source_number Sequential Identification Number for Each Source in the Catalog meta.id;src int nullable source_type Flag [SH] Indicates Source Was S=Found by SAO or H=Hand-Entered meta.code;src char nullable ra_error Error in Right Ascension s stat.error;pos.eq.ra;meta.main double nullable orig_source_number Original Number for Each Source in the Catalog meta.id;src int nullable dec_error Error in Declination arcsec stat.error;pos.eq.dec;meta.main double nullable snr Peak Signal/Noise Ratio stat.snr double nullable beam_size Map Beam Size arcsec phys.angSize double nullable lii Galactic Longitude degree pos.galactic.lon double nullable maximum_major_axis Upper Limit for Major Axis arcsec phys.angSize.smajAxis;stat.max double nullable bii Galactic Latitude degree pos.galactic.lat double nullable "__x_ra_dec" System unit vector column double nullable "__y_ra_dec" System unit vector column double nullable "__z_ra_dec" System unit vector column double nullable "__row" System index column char nullable