North-6cm ivo://nasa.heasarc/north6cm NASA/GSFC HEASARC Becker, White, Edwards 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Survey Source The NORTH6CM database is a catalog of 53,522 4.85-GHz sources generated by Becker, R. H., White, R. L., Edwards, A. L. 1991, ApJS 75, 1. It covers between 0 degrees and 75 degrees declination using observations taken with the NRAO Greenbank 300-ft telescope by Condon, Broderick and Seielstad (1989). The flux limit of the catalog is dependent on declination and ranges from approximately 40 mJy at 0 degrees to 20 mJy at 60 degrees. The source positions given in the catalog have a 95% confidence radius of approximately 50 arcsec. Spectral indices have been calculated for 29,051 sources which have counterparts in the Texas 365-MHz Northern Sky Survey. This is a service provided by NASA HEASARC . 1991ApJS...75....1B https://heasarc.gsfc.nasa.gov/W3Browse/all/north6cm.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=north6cm& GET text/xml 180 99999 true 162.606609957522 -3.23264533743692 0.25 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=north6cm GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_north6cm&Action=More+Options&Action=Parameter+Search&ConeAdd=1 RADIO CATALOG 0.25 Radio public north6cm 6cm Radio Catalog name Source Designation 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_6_cm Radio Flux Density at 6 cm mJy phot.flux.density;em.radio.3-6GHz float nullable spectral_index Radio Spectral Index spect.index;em.radio float nullable ext_flag Flag if Source Extended meta.code;phys.angSize char nullable wid_flag Flag Indicates 4.85- and 0.365-GHz Sources Separated by More Than 100 arcsec meta.code;src char nullable class Browse Object Classification src.class short 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 bv_color B-V Color (Note: All values are zero.) phot.color;em.opt.B;em.opt.V float nullable vmag V Magnitude phot.mag;em.opt.V float nullable ub_color U-B Color (Note: All values are zero.) phot.color;em.opt.U;em.opt.V float nullable redshift Redshift (Note: All values are zero.) src.redshift float nullable nh NH Galactic Absorption from 21 cm (Note: All values are zero.) phys.columnDensity float nullable bii Galactic Latitude degree pos.galactic.lat float nullable lii Galactic Longitude degree pos.galactic.lon float nullable