J/ApJS/81/83 J/ApJS/81/83 Compendium of Radio Spectra and Luminosities T Herbig A C S Readhead Astrophys. J. Suppl. 81 83 1992 1992ApJS...81...83H Radio sources Redshifts This catalog is a complete sample of 256 powerful extragalactic radio sources. The catalog includes source idenfification, redshift, luminosities and spectral indices at standard rest frequencies as well as bolometric luminosities between emitted frequencies of 10 MHz and 100 GHz. The paper also includes fits to the measured radio spectra which have not been included in this catalog.

IAUname IAU name of the object. --- name Other common name. --- z Redshift of the object. --- n_z [* ] * means Estimated redshifts For 18 of the sources no redshifts were available. For Sources with optical identifications but no reliable published redshifts, these were estimated from their apparent optical magnitudes. In the case of five sources not identified optically, a redshift of 1 was assumed. The redshift of these sources has been flagged with a * in this field. --- P_150 Emitted Luminosity at 150 MHz Emitted specific luminosities at the emitted frequencies shown for a value of the Hubble constant of Ho = 100 h km/s/Mpc. The values scale with (H/Ho)^-2. To estimate the fluxdensities measured data points were interpolated with a cubic spline fit to the observed flux densities. Most fits were made in the log S(nu) - log (nu) plane. Closeness of the spline fit was adjusted by eye with the parameter phi. Specific luminosities were evaluated at the satndard frequencies for a universe with qo=0.5 and Lambda=0. The bolometric luminosities were calculated from the spline fits. To extrapolate to the limits of the band the spectra were extended as power laws from the endpoints of the spline fits. W/Hz P_2500 Emitted Luminosity at 2.5 GHz W/Hz P_4000 Emitted Luminosity at 40 GHz W/Hz Pbol Emitted bolometric luminosities W alph150 Spectral index (S ~ nu^alpha at 150MHz) --- alph2500 Spectral index at 2.5 GHz --- alph4000 Spectral index at 40 GHz --- phi Spline fitting parameter --- mem [ABC ] Sample membership (A) revised 3CR survey of Laing et al. 1983 (LRL) (B) survey of Peacock and Wall 1981 (PW) (C) VLBI sample of Pearson and Readhead 1988 (PR). --- r_z References to redshifts (1) Laing et al. 1983 (2) Pearson and Readhead 1988 (3) Peacock and Wall 1981 (4) Riley, priv. comm. (5) Lawrence, priv. comm. (6) Xu, priv. comm. (7) Murphy 1988 (8) Veron and Veron 1981 (9) Spencer et al. 1989 (10) Hewitt and Burbidge 1987. A blank in this column indicates that no reliable redshift is available. The sources designated as "U" are not identified optically. --- N.P.M. Kuin ADC/SSDOO/NASA 1995Feb14 J_ApJS_81_83.xml