4C 20.33 , the SIMBAD biblio

4C 20.33 , the SIMBAD biblio (130 results) C.D.S. - SIMBAD4 rel 1.8 - 2024.04.23CEST22:09:27

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Keywords 		in a table in teXt, Caption, ... Nb occurence Nb objects in ref Citations
(from ADS) 		Title First 3 Authors
1966MNRAS.134..371L 262 52 The radio spectra of sources in the fourth Cambridge catalogue. LONG R.J., SMITH M.A., STEWART P., et al.
1967AJ.....72..738O 492 52 Accurate positions of selected 4C sources. OLSEN E.T.
1967AJ.....72..757D 628 52 A survey of the sky at 610.5 MHz. II. The region between declinations +15 and +22 degrees. DICKEL J.R., YANG K.S., McVITTIE G.C., et al.
1967MNRAS.135..361S 195 13 Further radio studies of sources in the fourth Cambridge catalogue. STEWART P. and LONG R.J.
1968AJ.....73..135G 627 132 Survey of radio sources observed in the continuum near 1420 MHz, declinations -5 to +70. GALT J.A. and KENNEDY J.E.D.
1968AJ.....73..298K 640 89 Measurements of the flux density of discrete radio sources at centimeter wawelengths. I. Observations at 2695 MHz. (11.3cm). KELLERMANN K.I., PAULINY-TOTH I.I.K. and TYLER W.C.
1968AJ.....73..953P 507 86 Measurements of the flux density and spectra of discrete sources at centimeter wavelengths. II. The observations at 5 GHz (6cm). PAULINY-TOTH I.I.K. and KELLERMANN K.I.
1969AJ.....74..366R viz 210 54 Spectral flux densities of radio sources at 22.25 MHz. I. ROGER R.S., COSTAIN C.H. and LACEY J.D.
1969AJ.....74..833H 199 10 Declination measurements of selected 4C sources using the Arecibo 1000-ft reflector. HAZARD C., JAUNCEY D.L., GULKIS S., et al.
1970AJ.....75..764O 487 125 Optical identification of radio sources selected from the 4C catalogue. OLSEN E.T.
1970AJ.....75.1039H 73 35 The identification of 4C sources usung the 4C right ascensions and Arecibo declinations. HAZARD C., JAUNCEY D.L. and BACKER D.C.
1971ApJ...164..237M 78 48 The radio structures of seventy-nine quasi-stellar objects. MacDONALD G.H. and MILEY G.K.
1971MNRAS.152..477M 128 206 The radio structure of quasars - A statistical investigation. MILEY G.K.
1971PASP...83..611D 202 88 A catalogue of quasars. DE VENY J.B., OSBORN W.H. and JANES K.
1972A&A....16..379B 162 5 Results of an initial survey structure in radio sources at 81.5 MHz. BURNELL S.J.
1972AJ.....77..405B viz 574 259 Flux densities, positions, and structures for a complete sample of intense radio sources at 1400 MHz. BRIDLE A.H., DAVIS M.M. and FOMALONT E.B.
1972AJ.....77..797P viz 242 111 The NRAO 5-GHz radio source survey. III. The 140-ft "strong" source survey. PAULINY-TOTH I.I.K. and KELLERMANN K.I.
1972ApJ...178...25S 98 285 The redshift-distance relation. III. Photometry and the Hubble diagram for radio sources and the possible turn-on time for QSOs. SANDAGE A.
1973A&A....28..319V 48 11 Optical positions of radio sources. II. VERON M.P. and VERON P.
1973PASP...85..162A 347 6 A list of quasi-stellar radio sources and quasi-stellar radio-source candidates from the 3C and 4C catalogs between declination -7 deg and +40 deg. AGNEW D. and ARP H.
1974AJ.....79..846A 160 17 Observations with the RRE interferometer of radio sources in the NRAO "strong" survey. ADGIE R.L.
1974AJ.....79.1006J 134 43 Optical identifications from the NRAO 5-GHz radio survey. JOHNSON K.H.
1974AJ.....79.1220C 462 84 Spectra of sources in the NRAO 5000-MHz surveys. CONDON J.J. and JAUNCEY D.L.
1974PASP...86..873G 93 55 The degree of optical variability of quasi-stellar objects. GRANDI S.A. and TIFFT W.G.
1975AJ.....80....1K 178 23 Radio spectra and red shifts of 179 QSOs. KRAUS J.D. and GEARHART M.R.
1975AJ.....80..931V 668 82 26.3-MHz radio source survey. II. Radio source positions and fluxes. VINER M.R. and ERICKSON W.C.
1975MmSAI..46..461B 493 7 Catalogue of quasi-stellar-objects. BARBIERI C., CAPACCIOLI M. and ZAMBON M.
1976AJ.....81..574P 412 12 Radio two-color diagram for QSOs, spiral galaxies, and BL Lac objets. PACHT E.
1976ApJ...204L..63C 18 34 Observations of radio sources with variable flux density at 365 and 380 MHz. COTTON W.D.
1977A&AS...27..205S 398 12 A comprehensive catalogue of quasi-stellar objects. SMITH-HAENNI A.L.
1977AJ.....82...21B 456 21 Variability of extragalactic sources at 2.7 GHz II. Flux densities of 550 sources and further evidence for variations. BRIDLE A.H., KESTEVEN M.J.L. and BRANDIE G.W.
1978A&AS...34..129M 124 120 Radio intensity and polarization distributions of quasars at three frequencies. MILEY G.K. and HARTSUIJKER A.P.
1979AJ.....84..707P 71 66 Radio structures of a complete sample of quasars from the 4C catalog. POTASH R.I. and WARDLE J.F.C.
1979PASJ...31..125S 155 39 Intergalactic magnetic fields and Faraday rotation of extragalactic radio sources. SOFUE Y., FUJIMOTO M. and KAWABATA K.-A.
1981A&A....98..300T 108 15 A study of galactic absorption as revealed by the reddenings of quasars. TEERIKORPI P.
1981A&A....98..309T 44 8 On the Hubble diagram for quasars as a corrected for galactic absorption: evidence for a separate class of the most luminous quasars. TEERIKORPI P.
1981AJ.....86.1604D 91 35 318-MHz variability of complete samples of extragalactic radio sources. II. DENNISON B., BRODERICK J.J., LEDDEN J.E., et al.
1981ApJ...245..357Z 1 99 555 X-ray studies of quasars with the Einstein Observatory. II. ZAMORANI G., HENRY J.P., MACCACARO T., et al.
1981ApJ...246...91D 29 32 A search for interstellar scintillations in a large sample of low-frequency variable sources. DENNISON B. and CONDON J.J.
1981ApJS...45...97S viz 420 305 The Faraday rotation measures of extragalactic radio sources. SIMARD-NORMANDIN M., KRONBERG P.P. and BUTTON S.
1983A&A...118..171F 46 38 The low frequency variability of extragalactic radio sources : discussion of the properties. FANTI C., FANTI R., FICARRA A., et al.
1983AJ.....88..709H 343 145 Are wide-angle radio-tail QSOs members of clusters of galaxies ? I. VLA maps at 20 cm of 117 radio quasars. HINTZEN P., ULVESTAD J. and OWEN F.
1984A&A...132..179T 87 10 On the asymmetry of double radio sources in quasars. TEERIKORPI P.
1984AJ.....89.1464F 61 48 Radio and X-ray emission in radio-selected quasars. FEIGELSON E.D., ISOBE T. and KEMBHAVI A.
1984ApJ...279...19W 125 82 The rotation measure distribution of QSOs and of intervening clouds: magnetic fields and column densities. WELTER G.L., PERRY J.J. and KRONBERG P.P.
1984ApJ...279..465M 240 160 A comparison of the properties of highly polarized QSOs versus low-polarization QSOs. MOORE R.L. and STOCKMAN H.S.
1984ApJ...284..491H 34 22 An X-ray survey of variable radio bright quasars. HENRIKSEN M.J., MARSHALL F.E. and MUSHOTZKY R.F.
1985AJ.....90.1599P 1228 160 A VLBI survey at 2.29 GHz. PRESTON R.A., MORABITO D.D., WILLIAMS J.G., et al.
1985ApJS...59..513A 106 411 Spectra and linear polarizations of extragalactic variable sources at centimeter wavelengths. ALLER H.D., ALLER M.F., LATIMER G.E., et al.
1985Ap&SS.115..107S 168 1 Redshifts of the brightest X-ray QSO's. SAPRE A.K. and MISHRA V.D.
1985PAZh...11..686S 39 1 Slow interstellar scintillations of extragalactic radio sources. SHAPIROVSKAYA N.Y.
1986MNRAS.219..719S 7 17 Radio observations of extended sources suspected of having steep-spectrum cores. SAIKIA D.J., KULKARNI V.K. and PORCAS R.W.
1986MNRAS.220...51K 124 52 X-ray and radio core emission in radio quasars. KEMBHAVI A., FEIGELSON E.D. and SINGH K.P.
1987A&AS...67...63P 49 46 Multifrequency observations of low frequency variable sources : a statistical analysis. PADRIELLI L., ALLER M.F., ALLER H.D., et al.
1987AJ.....93.1484M 267 27 A systematic search for long-term variability in a large sample of X-ray sources. MACCACARO T., GARILLI B. and MEREGHETTI S.
1987ApJ...313..596W 111 159 X-ray studies of quasars with the Einstein Observatory. IV. X-ray dependence on radio emission. WORRALL D.M., GIOMMI P., TANANBAUM H., et al.
1987MNRAS.226..601B 136 129 Beaming and the X-ray, optical and radio properties of quasars. BROWNE I.W.A. and MURPHY O.V.
1987Ap&SS.134...35Y 315 2 The spectral properties of quasars. YU K.N.
1988MNRAS.233...87S 462 50 Cosmic evolution of the physical sizes of extragalactic radio sources and their luminosity-size correlation. SINGAL A.K.
1988MNRAS.235p..13F 4 ~ WHT spectroscopy of emission-line gas around two separate quasars at z=0.87. FABIAN A.C., CRAWFORD C.S., JOHNSTONE R.M., et al.
1988MNRAS.235.1313S 101 18 A survey for metrewave variability extragalactic radio sources. SLEE O.B. and SIEGMAN B.C.
1988Ap&SS.141..303B 677 71 Catalogue of unambiguous (Faraday-thin, one-component, spectrum-selected) rotation measures for galaxies and quasars. BROTEN N.W., MacLEOD J.M. and VALLEE J.P.
1988IAUS..129..125M 6 4 Morphology of steep spectrum radio sources showing variability at low frequency. MANTOVANI F., MUXLOW T. and PADRIELLI L.
1989A&A...209..315S 40 44 The role of refractive interstellar scintillation in the low frequency variability of extragalactic radio sources. SPANGLER S., FANTI R., GREGORINI L., et al.
1989A&AS...81..253D 184 16 A catalogue of extented ionized nebulosities around active galactic nuclei. DURRET F.
1989ApJ...339...27C 71 67 The X-ray spectra of high-redshift quasars. CANIZARES C.R. and WHITE J.L.
1989ApJS...69....1H 1594 191 The first addition to the new optical catalog of quasi-stellar objects. HEWITT A. and BURBIDGE G.
1989MNRAS.239..219C 1 8 56 Spectroscopy of extended emission-line gas around quasars at 0.5<z<1. CRAWFORD C.S. and FABIAN A.C.
1989AZh....66..480V 117 2 3-meter-wavelength observations of the low-frequency-variable radio sources. VETUKHNOVSKAYA Y.N.
1989Ap&SS.155...19T 27 4 Reddenings of quasars vs PSA counts at high galactic latitudes. TEERIKORPI P. and KOTILAINEN J.
1990JRASC..84..199R 93 10 Optical polarization properties of compact radio sources. RUSK R.
1992A&AS...95..249L 232 10 A finding list of extragalactic radio jets and statistical results. LIU F.K. and XIE G.Z.
1992ApJ...398..454W 267 218 A survey for high optical polarization in quasars with core-dominant radio structure: is there a beamed optical continuum ? WILLS B.J., WILLS D., BREGER M., et al.
1992MNRAS.257..353M 15 31 Obervations at arcsecond resolution of steep-spectrum sources which vary at low frequencies. MANTOVANI F., JUNOR W., FANTI R., et al.
1993ApJ...413..453N viz 541 81 On the redshift-apparent size diagram of double radio sources. NILSSON K., VALTONEN M.J., KOTILAINEN J., et al.
1993ApJS...87..451H viz 14       D               7278 328 A revised and updated catalog of quasi-stellar objects. HEWITT A. and BURBIDGE G.
1993BAAS...25.1410C 16 ~ Snapshot VLBI mapping at 92 cm of 16 low frequency variable extragalactic sources. CARSON J.E., ALTSCHULER D.R., GURVITS L.I., et al.
1994A&A...287..390B 41 26 One-year modulation in the flux density time series of low frequency variables. BONDI M., PADRIELLI L., GREGORINI L., et al.
1994AJ....107..461B 272 24 Hubble Space Telescope faint object spectrograph quasar absorption system snapshot survey (ABSNAP). I. Astrometric optical positions and finding charts of 269 bright QSOs. BOWEN D.V., OSMER S.J., BLADES J.C., et al.
1994ApJS...92...53W viz 515 204 The Einstein database of IPC X-ray observations of optically selected and radio-selected quasars. I. WILKES B.J., TANANBAUM H., WORRALL D.M., et al.
1994IAUS..159..181B 7 1 AGN variability and VLBI. BAATH L.B.
1994IAUS..159..389A 15 0 Centiarcsecond structure and variability of AGN. ALTSCHULER D.R., GURVITS L.I., ALEF W., et al.
1995A&AS..109..147B viz 629 94 The ROSAT AGN content of the 87GB 5 GHz survey: bulk properties of previously optically identified sources. BRINKMANN W., SIEBERT J., REICH W., et al.
1995A&AS..114..197A 16 16 The centi-arcsecond structure of 16 low-frequency variable sources at 92 cm. ALTSCHULER D.R., GURVITS L.I., ALEF W., et al.
1995AuJPh..48..143S viz 2214 69 Radio sources observed with the Culgoora circular array. SLEE O.B.
1995JApA...16....1K 45 4 The radio structure of 45 quasars at z < 1.5. KAPAHI V.K.
1996A&AS..120...89B viz 126 20 A 15 years monitoring program at 408MHz. BONDI M., PADRIELLI L., FANTI R., et al.
1997A&A...319..413B viz 649 112 Broad band energy distribution of ROSAT detected quasars. I. Radio-loud objects. BRINKMANN W., YUAN W. and SIEBERT J.
1997A&AS..125..453B 107 T K                 2 0 High resolution interferometry of the
QSO 1422+202. 		BAATH L.B., MANTOVANI F. and RANTAKYROE F.T.
1997A&AS..125..573M 8 10 VLA polarimetry of compact steep spectrum sources. MANTOVANI F., JUNOR W., FANTI R., et al.
1998A&AS..132...31N viz 613 24 Kinematical models of double radio sources and the unified scheme. II. The database. NILSSON K.
1999A&AS..135...83M viz 22 5 Near infrared observations of quasars with extended ionized envelopes. MARQUEZ I., DURRET F. and PETITJEAN P.
1999ApJS..120...77S 41 10 14-year program monitoring the flux densities of 33 radio sources at low frequencies. SALGADO J.F., ALTSCHULER D.R., GHOSH T., et al.
2000A&A...353...77T viz 254 9 Evidence for the class of the most luminous quasars. II. Variability, polarization, and the gap in the MV distribution. TEERIKORPI P.
2001A&A...375..752T 73 7 Evidence for the class of the most luminous quasars. III. Linear sizes and the core-size relation of double radio sources. TEERIKORPI P.
2002A&A...381..757L viz 493 57 A new list of extra-galactic radio jets. LIU F.K. and ZHANG Y.H.
2003A&A...412...45P viz 15       D               1 956205 750 HYPERLEDA. I. Identification and designation of galaxies. PATUREL G., PETIT C., PRUGNIEL P., et al.
2003ApJ...586.1067H 1 84 486 The millennium Arecibo 21 centimeter absorption-line survey. II. Properties of the warm and cold neutral media. HEILES C. and TROLAND T.H.
2003ApJS..145..329H viz 74 137 The millennium Arecibo 21 centimeter absorption-line survey. I. Techniques and gaussian fits. HEILES C. and TROLAND T.H.
2006A&A...455..773V viz 108224 628 A catalogue of quasars and active nuclei: 12th edition. VERON-CETTY M.-P. and VERON P.
2008MNRAS.390..819G viz 15       D               279 15 The Combined NVSS-FIRST Galaxies (CoNFIG) sample - I. Sample definition, classification and evolution. GENDRE M.A. and WALL J.V.
2009A&A...500.1327R 38           X         1 58 2 Observations of 44 extragalactic radio sources with the VLBA at 92 cm. A list of potential calibrators and targets for LOFAR and RadioAstron. RAMPADARATH H., GARRETT M.A. and POLATIDIS A.
2009A&A...505..385A viz 15       D               1 99836 35 The large quasar reference frame (LQRF). An optical representation of the ICRS. ANDREI A.H., SOUCHAY J., ZACHARIAS N., et al.
2010A&A...511A..53V viz 15       D               1 107940 39 The SPECFIND V2.0 catalogue of radio cross-identifications and spectra. SPECFIND meets the Virtual Observatory. VOLLMER B., GASSMANN B., DERRIERE S., et al.
2010AJ....139.2360S viz 80069 836 The Sloan Digital Sky Survey quasar catalog. V. Seventh data release. SCHNEIDER D.P., RICHARDS G.T., HALL P.B., et al.
2010A&A...518A..10V viz 15       D               1 168913 597 A catalogue of quasars and active nuclei: 13th edition. VERON-CETTY M.-P. and VERON P.
2011ApJS..194...45S viz 15       D               1 105786 1138 A catalog of quasar properties from Sloan Digital Sky Survey data release 7. SHEN Y., RICHARDS G.T., STRAUSS M.A., et al.
2012AJ....143..119I viz 15       D               1 50857 129 The Sloan Digital Sky Survey Quasar Lens Search. V. Final catalog from the seventh data release. INADA N., OGURI M., SHIN M.-S., et al.
2012ApJ...753..106M viz 15       D               1 89523 227 A description of quasar variability measured using repeated SDSS and POSS imaging. MacLEOD C.L., IVEZIC Z., SESAR B., et al.
2013MNRAS.430.3445M viz 16       D               1 16275 18 The covering factor of warm dust in quasars: a view from the Wide-field Infrared Survey Explorer All-Sky Data Release. MA X.-C. and WANG T.-G.
2013ApJS..206....4K viz 16       D               1 119612 109 Mean spectral energy distributions and bolometric corrections for luminous quasars. KRAWCZYK C.M., RICHARDS G.T., MEHTA S.S., et al.
2013ApJ...779..161S viz 16       D               1 79596 24 Precious metals in SDSS quasar spectra. II. Tracking the evolution of strong, 0.4 < z < 2.3 Mg II absorbers with thousands of systems. SEYFFERT E.N., COOKSEY K.L., SIMCOE R.A., et al.
2014ApJS..212...15F viz 16       D               1 24940 60 A broadband polarization catalog of extragalactic radio sources. FARNES J.S., GAENSLER B.M. and CARRETTI E.
2014ApJ...795...63F viz 16       D               1 597 43 Faraday rotation from magnesium II absorbers toward polarized background radio sources. FARNES J.S., O'SULLIVAN S.P., CORRIGAN M.E., et al.
2014ApJS..215...14D viz 16       D               1 7883 110 The WISE blazar-like radio-loud sources: an all-sky catalog of candidate γ-ray blazars. D'ABRUSCO R., MASSARO F., PAGGI A., et al.
2014MNRAS.445..955B viz 16       D               1 220 89 The cosmic evolution of radio-AGN feedback to z = 1. BEST P.N., KER L.M., SIMPSON C., et al.
2015MNRAS.448.2260G viz 16       D               1 32939 53 A photometric selection of white dwarf candidates in Sloan Digital Sky Survey Data Release 10. GENTILE FUSILLO N.P., GANSICKE B.T. and GREISS S.
2015AJ....149..203K viz 16       D               1 35971 56 Mining for dust in type 1 quasars. KRAWCZYK C.M., RICHARDS G.T., GALLAGHER S.C., et al.
2016MNRAS.461.2346G viz 16       D               1 68279 3 Covering factors of the dusty obscurers in radio-loud and radio-quiet quasars. GUPTA M., SIKORA M. and NALEWAJKO K.
2018ApJS..235...11C viz 16       D               1 190674 1 The associated absorption features in quasar spectra of the Sloan Digital Sky Survey. I. Mg II absorption doublets. CHEN Z.-F., HUANG W.-R., PANG T.-T., et al.
2018A&A...613A..51P viz 16       D               1 525784 350 The Sloan Digital Sky Survey Quasar Catalog: Fourteenth data release. PARIS I., PETITJEAN P., AUBOURG E., et al.
2018ApJ...860...33F 16       D               1 87 14 Synthetic observations of 21 cm H I line profiles from inhomogeneous turbulent interstellar H I gas with magnetic fields. FUKUI Y., HAYAKAWA T., INOUE T., et al.
2019MNRAS.484.1021O viz 17       D               1 2523 ~ The redshift distribution of infrared-faint radio sources. ORENSTEIN B.J., COLLIER J.D. and NORRIS R.P.
2019ApJS..242....4D viz 17       D               1 9560 45 Two new catalogs of blazar candidates in the WISE Infrared sky. D'ABRUSCO R., ALVAREZ CRESPO N., MASSARO F., et al.
2020ApJS..249...17R viz 17       D               1 525797 112 Spectral properties of quasars from Sloan Digital Sky Survey data release 14: the catalog. RAKSHIT S., STALIN C.S. and KOTILAINEN J.
2020ApJ...899...15M viz 17       D               1 57 21 Extracting the cold neutral medium from H I emission with deep learning: implications for Galactic foregrounds at high latitude. MURRAY C.E., PEEK J.E.G. and KIM C.-G.
2020ApJS..250....8L viz 17       D               1 750060 219 The Sloan Digital Sky Survey quasar catalog: Sixteenth Data Release. LYKE B.W., HIGLEY A.N., McLANE J.N., et al.
1974ApJ...194..249W 14       D               1 99 670 The linear polarization of quasi-stellar radio sources at 3.71 and 11.1 centimeters. WARDLE J.F.C. and KRONBERG P.P.
2021A&A...655A..17S viz 17       D               1 338596 3 The SPECFIND V3.0 catalog of radio continuum cross-identifications and spectra: Reaching lower frequencies. STEIN Y., VOLLMER B., BOCH T., et al.
2024A&A...682A..18M viz 20       D               1 97 ~ A comparison of compact, presumably young with extended, evolved radio active galactic nuclei. MEUSINGER H. and MHASKEY M.

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