VLAECDFSCLS ivo://nasa.heasarc/vlaecdfscls NASA/GSFC HEASARC Bonzini et al. 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Survey Source The sub-mJy radio population is a mixture of active systems, that is star-forming galaxies (SFGs) and active galactic nuclei (AGNs). In their paper, the authors study a sample of 883 radio sources detected at 1.4 GHz in a deep Very Large Array (VLA) survey of the Extended Chandra Deep Field-South (E-CDF-S) that reaches a best rms sensitivity of 6 microJansky (µJy). The authors have used a simple scheme to disentangle SFGs, radio-quiet (RQ), and radio-loud (RL) AGNs based on the combination of radio data with Chandra X-ray data and mid-infrared observations from Spitzer. They find that at flux densities between about 30 and 100 uJy, the radio population is dominated by SFGs (~60%) and that RQ AGNs become increasingly important over RL ones below 100 uJy. In the paper, the authors also compare the host galaxy properties of the three classes in terms of morphology, optical colors and stellar masses. Their results show that both SFG and RQ AGN host galaxies have blue colors and late-type morphology while RL AGNs tend to be hosted by massive red galaxies with early-type morphology. This supports the hypothesis that radio emission in SFGs and RQ AGNs mainly comes from the same physical process: star formation in the host galaxy. This table was created by the HEASARC in January 2014 based on the machine-readable version of Table 1 from the reference paper which was obtained from the MNRAS web site. This is a service provided by NASA HEASARC . 2013MNRAS.436.3759B https://heasarc.gsfc.nasa.gov/W3Browse/all/vlaecdfscls.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=vlaecdfscls& GET text/xml 180 99999 true 52.990625 -28.09118056 0.0166666666666667 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=vlaecdfscls GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_vlaecdfscls&Action=More+Options&Action=Parameter+Search&ConeAdd=1 RADIO CATALOG 0.0166666666666667 Infrared Radio X-ray public vlaecdfscls VLA Extended-Chandra Deep Field-South Classification 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 position_flag Flag [R] Indicates Position Is from Radio Catalog meta.code;pos char nullable broad_type Broad Classification of the Source src.class char nullable redshift Redshift of the Source src.redshift double nullable log_lx_limit Limit Flag for Logarithm of the X-Ray Luminosity meta.code;phys.luminosity;em.X-ray char nullable log_lx Logarithm of the X-Ray Luminosity in the Hard Band (2-10 keV) log(erg/s) phys.luminosity;em.X-ray double nullable log_l_rad Logarithm of the Radio Power W/Hz phys.luminosity;em.radio double nullable class_quality_flag Quality Flag of the Classification: from 3=Secure to 1=Insecure meta.code.qual;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 class Browse Object Classification src.class short nullable source_number Sequential Identification Number for Each Source in Catalog meta.id;src short nullable log_ratio_8p0_4p5_um IRAC Color: Logarithm of the Ratio of 8.0- and 4.5-um Flux Densities phot.flux.density;arith.ratio;em.IR.4-8um double nullable log_ratio_5p8_3p6_um IRAC Color: Logarithm of the Ratio of 5.8- and 3.6-um Flux Densities phot.flux.density;arith.ratio;em.IR.4-8um;em.IR.3-4um double nullable radio_spectral_index Radio Spectral Index, 0.7 If No 6-cm Observations Are Available spect.index;em.radio double nullable abs_bmag Rest-Frame Absolute B Magnitude mag phys.magAbs;em.opt.B double nullable q24_obs Logarithm of the Ratio of the Observed 24-micron and 1.4-Ghz Luminosities phot.flux.density;arith.ratio;em.IR.15-30um;em.radio.750-1500MHz double nullable lii Galactic Longitude degree pos.galactic.lon double nullable q24_obs_limit Limit Flag for Logarithm of the Ratio of the 24-micron and 1.4-Ghz Luminosities meta.code;phot.flux.density;arith.ratio;em.IR.15-30um;em.radio.750-1500MHz char nullable bii Galactic Latitude degree pos.galactic.lat double nullable