7006 VII/6 Polarization Meas Extragalactic Radio Sources W Eichendorf M Reinhardt Astrophysics and Space Science 61 153-167 1979 1979Ap&SS..61..153E W Eichendorf M Reinhardt Acta Cosmologica, Zesz. 9 7-48 1981 1981AcC.....9....7E Polarization Galaxies, radio Redshifts Galaxy catalogs The catalog contains 510 extragalactic radio sources, and covers all polarization measurements from 1965 to the middle of 1974 and a few other radio and optical data for these sources. The typical observation error was in the range of 1-2 percent in 1965 and 0.5-1 percent in 1974. The selection criterion for sources was that polarization data should be available at least at three wavelengths for each source. This reduced the sample to 510 sources. The catalog includes observational data: classifications, Cambridge numbers, coordinates, degrees of polarization at various wavelengths, polarization angles at each wavelength, largest angular diameters, position angles, and redshifts. The catalog also includes derived data: rotation measures, linear source diameters, polarization angles at wavelength 0 cm, differences between position angle and polarization angle at 0 cm, spectral indices between each pair of successive wavelengths observed, and polarization indices between each pair of successive wavelengths observed.

RAh Right ascension in hours (B1950) Equatorial coordinates (1950.0) h RAm RA in minutes min DE- Sign of Declination --- DEd Declination in degrees (B1950) deg RC3REV Cambridge number Cambridge number. From the Revised 3C Catalog of Radio Sources (Bennett 1962). --- Class Classification One of three, single-letter classification codes: G = Radio Galaxy Q = Quasar U = Unidentified --- z Redshift --- AngDiam Largest angular diameter arcsec PA Position angle in degrees Position angle of the major axis of the object, measured eastward from North in degrees. deg S(2cm) Flux dens. at 2 cm Jy S(3.7cm) Flux dens. at 3.7 cm Jy S(6cm) Flux dens. at 6 cm Jy S(11cm) Flux dens. at 11 cm Jy S(18cm) Flux dens. at 18 cm Jy S(21cm) Flux dens. at 21 cm Jy S(31cm) Flux dens. at 31 cm Jy S(49cm) Flux dens. at 49 cm Jy S(73cm) Flux dens. at 73 cm Jy LP(2cm) Deg. of linear polarization 2 cm in percent % LP(3.7cm) Deg. of linear polarization 3.7 cm in perc % LP(6cm) Deg. of linear polarization 6 cm in percent % LP(11cm) Deg. of linear polarization 11 cm in perc % LP(18cm) Deg. of linear polarization 18 cm in perc % LP(21cm) Deg. of linear polarization 21 cm in perc % LP(31cm) Deg. of linear polarization 31 cm in perc % LP(49cm) Deg. of linear polarization 49 cm in perc % LP(73cm) Deg. of linear polarization 73 cm in perc % PolA(2cm) Pol. angle at 2 cm deg PolA(3.7cm) Pol. angle at 3.7 cm deg PolA(6cm) Pol. angle at 6 cm deg PolA(11cm) Pol. angle at 11 cm deg PolA(18cm) Pol. angle at 18 cm deg PolA(21cm) Pol. angle at 21 cm deg PolA(31cm) Pol. angle at 31 cm deg PolA(49cm) Pol. angle at 49 cm deg PolA(73cm) Pol. angle at 73 cm deg RAh Right ascension in hours (B1950) h RAm RA in minutes min DE- Sign of Declination --- DEd Declination in degrees (B1950) deg RC3REV Cambridge number --- Class Classification --- RM Rotation measure in radians per square meter rad/m2 PolA Pol. angle at 0 cm Linear extrapolation of the angle of polarization at wavelength = 0 cm, in degrees. deg PA-PolA Pos. angle - pol. angle Difference between the position angle of the source and the polarization angle at lambda = 0 cm in degrees. deg SI Mean spectral index The mean spectral index coefficient, found by regression, of the individual spectral indices. Note: All of these values were recalculated by the authors of the catalog even when accepted values already existed, because of the greater amount of data available to them. See Eichendorf and Reinhardt (1979) and Eichendorf and Reinhardt (1980) for discussions of how the recalculated mean spectral indices compare to the existing data. The spectral index SI(*) defined by a power law in the flux density function S, where S = frequency . power(SI(*)). Usually SI(*) is notated with the greek letter alpha. The spectral index is determined only between the available wavelengths. --- PI Mean pol. index Analogous to the mean spectral index for flux densities, this is the coefficient found by regression from the individual polarization indices. The polarization index PI(*) is defined as a power law analogous to the spectral index for the flux density measurements. The degree of polarization, P = frequency. power(PI(*)). As in the case of the spectral index, PI(*) is defined only between certain wavelengths. This quantity was introduced and defined by the authors and included in the catalog. See both references for details of the derivation, justification, and implications of this parameter. --- SI(2) Spec. index, 2-3.7 cm The spectral index SI(*) defined by a power law in the flux density function S, where S = frequency . power(SI(*)). Usually SI(*) is notated with the greek letter alpha. The spectral index is determined only between the available wavelengths. --- SI(3.7) Spec. index, 3.7-6 cm The spectral index SI(*) defined by a power law in the flux density function S, where S = frequency . power(SI(*)). Usually SI(*) is notated with the greek letter alpha. The spectral index is determined only between the available wavelengths. --- SI(6) Spec. index, 6 -11 cm The spectral index SI(*) defined by a power law in the flux density function S, where S = frequency . power(SI(*)). Usually SI(*) is notated with the greek letter alpha. The spectral index is determined only between the available wavelengths. --- SI(11) Spec. index, 11-18 cm The spectral index SI(*) defined by a power law in the flux density function S, where S = frequency . power(SI(*)). Usually SI(*) is notated with the greek letter alpha. The spectral index is determined only between the available wavelengths. --- SI(18) Spec. index, 18-21 cm The spectral index SI(*) defined by a power law in the flux density function S, where S = frequency . power(SI(*)). Usually SI(*) is notated with the greek letter alpha. The spectral index is determined only between the available wavelengths. --- SI(21) Spec. index, 21-31 cm The spectral index SI(*) defined by a power law in the flux density function S, where S = frequency . power(SI(*)). Usually SI(*) is notated with the greek letter alpha. The spectral index is determined only between the available wavelengths. --- SI(31) Spec. index, 31-49 cm The spectral index SI(*) defined by a power law in the flux density function S, where S = frequency . power(SI(*)). Usually SI(*) is notated with the greek letter alpha. The spectral index is determined only between the available wavelengths. --- SI(49) Spec. index, 49-73 cm The spectral index SI(*) defined by a power law in the flux density function S, where S = frequency . power(SI(*)). Usually SI(*) is notated with the greek letter alpha. The spectral index is determined only between the available wavelengths. --- PI(2) Pol. index, 2-3.7 cm The polarization index PI(*) is defined as a power law analogous to the spectral index for the flux density measurements. The degree of polarization, P = frequency. power(PI(*)). As in the case of the spectral index, PI(*) is defined only between certain wavelengths. This quantity was introduced and defined by the authors and included in the catalog. See both references for details of the derivation, justification, and implications of this parameter. --- PI(3.7) Pol. index, 3.7-6 cm The polarization index PI(*) is defined as a power law analogous to the spectral index for the flux density measurements. The degree of polarization, P = frequency. power(PI(*)). As in the case of the spectral index, PI(*) is defined only between certain wavelengths. This quantity was introduced and defined by the authors and included in the catalog. See both references for details of the derivation, justification, and implications of this parameter. --- PI(6) Pol. index, 6 -11 cm The polarization index PI(*) is defined as a power law analogous to the spectral index for the flux density measurements. The degree of polarization, P = frequency. power(PI(*)). As in the case of the spectral index, PI(*) is defined only between certain wavelengths. This quantity was introduced and defined by the authors and included in the catalog. See both references for details of the derivation, justification, and implications of this parameter. --- PI(11) Pol. index, 11-18 cm The polarization index PI(*) is defined as a power law analogous to the spectral index for the flux density measurements. The degree of polarization, P = frequency. power(PI(*)). As in the case of the spectral index, PI(*) is defined only between certain wavelengths. This quantity was introduced and defined by the authors and included in the catalog. See both references for details of the derivation, justification, and implications of this parameter. --- PI(18) Pol. index, 18-21 cm The polarization index PI(*) is defined as a power law analogous to the spectral index for the flux density measurements. The degree of polarization, P = frequency. power(PI(*)). As in the case of the spectral index, PI(*) is defined only between certain wavelengths. This quantity was introduced and defined by the authors and included in the catalog. See both references for details of the derivation, justification, and implications of this parameter. --- PI(21) Pol. index, 21-31 cm The polarization index PI(*) is defined as a power law analogous to the spectral index for the flux density measurements. The degree of polarization, P = frequency. power(PI(*)). As in the case of the spectral index, PI(*) is defined only between certain wavelengths. This quantity was introduced and defined by the authors and included in the catalog. See both references for details of the derivation, justification, and implications of this parameter. --- PI(31) Pol. index, 31-49 cm The polarization index PI(*) is defined as a power law analogous to the spectral index for the flux density measurements. The degree of polarization, P = frequency. power(PI(*)). As in the case of the spectral index, PI(*) is defined only between certain wavelengths. This quantity was introduced and defined by the authors and included in the catalog. See both references for details of the derivation, justification, and implications of this parameter. --- PI(49) Pol. index, 49-73 cm The polarization index PI(*) is defined as a power law analogous to the spectral index for the flux density measurements. The degree of polarization, P = frequency. power(PI(*)). As in the case of the spectral index, PI(*) is defined only between certain wavelengths. This quantity was introduced and defined by the authors and included in the catalog. See both references for details of the derivation, justification, and implications of this parameter. --- RAh Right ascension in hours (B1950) h RAm RA in minutes min DE- Sign of Declination --- DEd Declination in degrees (B1950) deg RC3REV Cambridge number --- Class Classification --- LP(2cm) Deg. of linear polarization 2 cm in percent % LP(3.7cm) Deg. of lin. polarization 3.7 cm in percent % LP(6cm) Deg. of linear polarization 6 cm in percent % LP(11cm) Deg. of linear polarization 11 cm in percent % LP(18cm) Deg. of linear polarization 18 cm in percent % LP(21cm) Deg. of linear polarization 21 cm in percent % LP(31cm) Deg. of linear polarization 31 cm in percent % LP(49cm) Deg. of linear polarization 49 cm in percent % LP(73cm) Deg. of linear polarization 73 cm in percent % PolA(2cm) Pol. angle at 2 cm deg PolA(3.7cm) Pol. angle at 3.7 cm deg PolA(6cm) Pol. angle at 6 cm deg PolA(11cm) Pol. angle at 11 cm deg PolA(18cm) Pol. angle at 18 cm deg PolA(21cm) Pol. angle at 21 cm deg PolA(31cm) Pol. angle at 31 cm deg PolA(49cm) Pol. angle at 49 cm deg PolA(73cm) Pol. angle at 73 cm deg S(2cm) Flux dens. at 2 cm Jy S(3.7cm) Flux dens. at 3.7 cm Jy S(6cm) Flux dens. at 6 cm Jy S(11cm) Flux dens. at 11 cm Jy S(18cm) Flux dens. at 18 cm Jy S(21cm) Flux dens. at 21 cm Jy S(31cm) Flux dens. at 31 cm Jy S(49cm) Flux dens. at 49 cm Jy S(73cm) Flux dens. at 73 cm Jy RAh Right ascension in hours (B1950) h RAm RA in minutes min DE- Sign of Declination --- DEd Declination in degrees (B1950) deg RC3REV Cambridge number --- Class Classification --- Diam Lin. source diam. Line source diameter. In Mpc. See Eichendorf and Reinhardt (1980) for details of how this was derived. Mpc RM Rotation measure in radians per square meter Rotation measure. Derived from the redshift-corrected values, in radians per square meter. rad/m2 PolA Pol. angle at 0 cm deg PA-PolA Pos. angle - pol. angle deg SI Mean spectral index --- PI Mean pol. index --- SI(2) Spec. index, 2-3.7 cm --- SI(3.7) Spec. index, 3.7-6 cm --- SI(6) Spec. index, 6 -11 cm --- SI(11) Spec. index, 11-18 cm --- SI(18) Spec. index, 18-21 cm --- SI(21) Spec. index, 21-31 cm --- SI(31) Spec. index, 31-49 cm --- SI(49) Spec. index, 49-73 cm --- PI(2) Pol. index, 2-3.7 cm --- PI(3.7) Pol. index, 3.7-6 cm --- PI(6) Pol. index, 6 -11 cm --- PI(11) Pol. index, 11-18 cm --- PI(18) Pol. index, 18-21 cm --- PI(21) Pol. index, 21-31 cm --- PI(31) Pol. index, 31-49 cm --- PI(49) Pol. index, 49-73 cm --- C.-H. Joseph Lyu Hughes STX/NASA 1996Apr05The original ADC documentation by Theresa A. Nagy (1979) was used to generate this ReadMe file. UNKNOWN UNKNOWN The Catalog of Polarization Measurements and Related Data of Extragalactic Radio Sources was sent to the Astronomical Data Center (ADC), NASA Goddard Space Flight Center, by the Centre de Donnees Astronomiques, Strasbourg (CDS), in July 1980. The original tape contained four text files formatted in the same manner as in the published catalog. The catalog was so well formatted that essentially no editing was required. VII_6.xml