SMCRadio ivo://nasa.heasarc/smcradio NASA/GSFC HEASARC Payne et al.; Filipovic et al. 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Survey Source This table contains the classification of 717 radio-continuum sources from the Australia Telescope Compact Array (ATCA) Catalog of the Small Magellanic Cloud (SMC). All 717 sources have been categorised into one of three groups: supernova remnants (SNRs), HII regions and background sources. In total, 71 sources are named as HII regions (or candidates) and 21 sources are named as SNRs (or candidates). Six sources are named as either HII regions or background sources and two are candidate radio planetary nebulae. One source is coincident with an X-ray binary. 616 objects are classified as background sources and their statistics are presented in the published paper II from which this table is taken. This table was created by the HEASARC in March 2005 based on CDS table J/MNRAS/355/44/table2.dat . This is a service provided by NASA HEASARC . 2004MNRAS.355...44P https://heasarc.gsfc.nasa.gov/W3Browse/all/smcradio.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=smcradio& GET text/xml 180 99999 true 20.7415 -75.25169444 0.0166666666666667 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=smcradio GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_smcradio&Action=More+Options&Action=Parameter+Search&ConeAdd=1 RADIO CATALOG 0.0166666666666667 Radio public smcradio Small Magellanic Cloud ATCA Radio Continuum Sources name Catalog 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_4800_mhz ATCA (4.8GHz) Flux Density (mJy) mJy double nullable spect_index Spectral Index double nullable spect_index_error Spectral Index Error double nullable group_name Group Designation (HHMM-DDMM) char nullable flux_2370_mhz ATCA (2.37GHz) Flux Density (mJy) mJy double nullable est_flux_1000_mhz Estimated Flux Density at 1GHz (mJy) mJy double nullable flux_8640_mhz ATCA (8.64GHz) Flux Density (mJy) mJy double nullable flux_1420_mhz ATCA (1.42GHz) Flux Density (mJy) mJy double nullable flux_408_mhz MC4 (408MHz) Flux Density (mJy) mJy double nullable old_type Previous Classification char nullable alt_names Alternative Source Designations char nullable log_lx Log of 0.1-4keV X-ray Luminosity double nullable flux2_843_mhz MOST (843MHz) Flux Density (mJy) mJy double nullable class Browse Object Classification src.class short nullable comments Comments char nullable source_type Calculated Classification src.class char nullable sequence_number ATCA Source Number short nullable lii Galactic Longitude degree pos.galactic.lon double nullable bii Galactic Latitude degree pos.galactic.lat double nullable flux1_843_mhz SUMSS (843MHz) Flux Density (mJy) mJy 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