4C 20.25 , the SIMBAD biblio

4C 20.25 , the SIMBAD biblio (59 results) C.D.S. - SIMBAD4 rel 1.8 - 2026.10.16CEST01:48:26

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Bibcode/DOI Score in Title|Abstract|
Keywords 		in a table in teXt, Caption, ... Nb occurence Nb objects in ref Citations
(from ADS) 		Title First 3 Authors
1967AJ.....72..738O 492 52 Accurate positions of selected 4C sources. OLSEN E.T.
1967AJ.....72..757D 627 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.
1969MNRAS.146..265W 572 46 Extension of the radio source luminosity function. I. Observations. WINDRAM M.D. and KENDERDINE S.
1970AJ.....75..764O 487 125 Optical identification of radio sources selected from the 4C catalogue. OLSEN E.T.
1971AuJPh..24..889B 166 22 Some identifications for weak sources in the Parkes catalogue for declinations +20 to -20. BOLTON J.G., WALL J.V. and SHIMMINS A.J.
1973ApJ...182L..13S 51 69 Redshifts for 51 galaxies identified with radio sources in the 4C catalog. SARGENT W.L.W.
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.
1978AJ.....83..704B 42 98 Extended radio sources and elliptical galaxies. I. Small-diameter components in extended structures. BRIDLE A.H. and FOMALONT E.B.
1979A&AS...36..331V 425 8 A study of the 4C catalogue of radio sources between declinations 20 and 40 degres. I. 318 MHz flux density measurements. VERON M.P. and VERON P.
1979AJ.....84.1111G 90 13 Extended radio sources and elliptical galaxies. III. Optical positions for galaxy centers. GOODSON R.E., PALIMAKA J.J. and BRIDLE A.H.
1981MNRAS.196..669W 46 34 Optical and radio properties of 4C galaxies. WILKINSON A., HINE R.G. and SARGENT W.L.W.
1983ApJ...272...11P 131 88 Optical variability, absolute luminosity, and the Hubble diagram for QSOs. PICA A.J. and SMITH A.G.
1984Ap&SS.102...29P 91 0 A correlation between ellipticity and core-strength in extended radiogalaxies. PRABHU T.P. and KOCHHAR R.K.
1988AJ.....96.1215P 144 137 Long-term optical behavior of 144 compact extragalactic objects: 1969-1988. PICA A.J., SMITH A.G., WEBB J.R., et al.
1993ApJ...404..521A 124 90 The evolution of galaxies in radio-selected groups. ALLINGTON-SMITH J.R., ELLIS R.S., ZIRBEL E.L., et al.
1995ApJ...448..521Z viz 14       D               1 475 192 On the FR I / FR II dichotomy in powerful radio sources : analysis of their emission-line and radio luminosities. ZIRBEL E.L. and BAUM S.A.
1995PASP..107..863S 66 36 Time scales of long-term optical base-level fluctuations in three classes of AGN. SMITH A.G. and NAIR A.D.
1996ApJ...473..713Z viz 92 50 Properties of host galaxies of powerful radio sources. ZIRBEL E.L.
1996MNRAS.281..425M 1 58 251 Optical spectroscopy and polarization of a new sample of optically bright flat radio spectrum sources. MARCHA M.J.M., BROWNE I.W.A., IMPEY C.D., et al.
1997ApJ...476..489Z 134 97 The megaparsec environments of radio galaxies. ZIRBEL E.L.
1998A&AS..132...31N viz 613 24 Kinematical models of double radio sources and the unified scheme. II. The database. NILSSON K.
1998MNRAS.300..790W viz 541 128 Interferometer phase calibrations sources - III. The regions +20deg ≤ delB1950 ≤ +35deg and +75deg ≤ delB1950 ≤ +90deg . WILKINSON P.N., BROWNE I.W.A., PATNAIK A.R., et al.
2000A&A...361..480D 58 16 Flat radio-spectrum galaxies and BL Lacs. I. Core properties. DENNETT-THORPE J. and MARCHA M.J.
2001MNRAS.325.1109B 52 25 Intermediate BL Lac objects. BONDI M., MARCHA M.J.M., DALLACASA D., et al.
2002ApJS..141...13B viz 1501 304 The VLBA calibrator Survey–VCS1. BEASLEY A.J., GORDON D., PECK A.B., et al.
2002MNRAS.329..700S viz 1287 23 Automated optical identification of a large complete northern hemisphere sample of flat-spectrum radio sources with S6cm>200mJy. SNELLEN I.A.G., McMAHON R.G., HOOK I.M., et al.
2003A&A...412...45P viz 15       D               1 956189 750 HYPERLEDA. I. Identification and designation of galaxies. PATUREL G., PETIT C., PRUGNIEL P., et al.
2003AJ....126.2152R viz 15       D               15140 214 CAIRNS: the cluster and infall region nearby survey. I. Redshifts and mass profiles. RINES K., GELLER M.J., KURTZ M.J., et al.
2003MNRAS.341....1M viz 15       D               1 10126 328 The Cosmic Lens All-Sky Survey - I. Source selection and observations. MYERS S.T., JACKSON N.J., BROWNE I.W.A., et al.
2004MNRAS.352..673A 66 20 The spectral energy distributions of the revised 200-mJy sample. ANTON S., BROWNE I.W.A., MARCHA M.J.M., et al.
2005MNRAS.356..225A 35 37 The recognition of blazars and the blazar spectral sequence. ANTON S. and BROWNE I.W.A.
2005PNAOC...2..209X 188 0 Gamma-ray emissions of AGN and cosmological standard candles. XIE Z.-H., ZHANG X., LIU H.-T., et al.
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 107473 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.
2010A&A...516A...1L 15       D           *   1 89 10 Parsec-scale properties of brightest cluster galaxies. LIUZZO E., GIOVANNINI G., GIROLETTI M., 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.
2011AJ....142...89P viz 15       D               1 857 22 Precise absolute astrometry from the VLBA imaging and polarimetry survey at 5 GHz. PETROV L. and TAYLOR G.B.
2014ApJS..212...15F viz 15       D               1 24788 60 A broadband polarization catalog of extragalactic radio sources. FARNES J.S., GAENSLER B.M. and CARRETTI E.
2014ApJ...788...45T viz 15       D               1 224166 54 Luminosity and redshift dependence of the covering factor of active galactic nuclei viewed with WISE and Sloan Digital Sky Survey. TOBA Y., OYABU S., MATSUHARA H., et al.
2014ApJS..215...14D viz 15       D               1 7877 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.
2015AJ....150...58F viz 16       D               1 3421 241 The second realization of the international celestial reference frame by very long baseline interferometry. FEY A.L., GORDON D., JACOBS C.S., et al.
2016AJ....151..154G viz 16       D               1 2386 11 Second epoch VLBA Calibrator Survey observations: VCS-II. GORDON D., JACOBS C., BEASLEY A., et al.
2016AJ....152...53B 16       D               2 57 7 A global astrometric solution for Pan-STARRS referenced to ICRF2. BERGHEA C.T., MAKAROV V.V., FROUARD J., et al.
2017ApJS..228...22L viz 16       D               1 1528 2 Korean VLBI Network Calibrator Survey (KVNCS). 1. Source catalog of KVN single-dish flux density measurement in the K and Q bands. LEE J.A., SOHN B.W., JUNG T., et al.
2018MNRAS.475.5179S viz 16       D               1 352 6 Spatially offset AGN candidates in the CLASS survey. SKIPPER C.J. and BROWNE I.W.A.
2019ApJS..242....4D viz 16       D               1 9583 45 Two new catalogs of blazar candidates in the WISE Infrared sky. D'ABRUSCO R., ALVAREZ CRESPO N., MASSARO F., et al.
2019ApJS..242....5X viz 16       D               1 3393 ~ Structure effects for 3417 Celestial Reference Frame radio sources. XU M.H., ANDERSON J.M., HEINKELMANN R., et al.
2019A&A...630A.101K viz 16       D               2 3584 ~ Realization of a multifrequency celestial reference frame through a combination of normal equation systems. KARBON M. and NOTHNAGEL A.
2020MNRAS.493L..54K viz 16       D               1 1059 ~ Optical polarization properties of AGNs with significant VLBI-Gaia offsets. KOVALEV Y.Y., ZOBNINA D.I., PLAVIN A.V., et al.
2020ApJ...893..162F 99       D       C       3 95 44 Patterns in the multiwavelength behavior of candidate neutrino blazars. FRANCKOWIAK A., GARRAPPA S., PALIYA V., et al.
2020Ap.....63..322A viz 16       D               1 97 ~ Classification by activity type of a sample of active galaxies with radio emission. ABRAHAMYAN H.V., MICKAELIAN A.M., PARONYAN G.M., et al.
2020A&A...644A.159C viz 16       D               1 4536 184 The third realization of the International Celestial Reference Frame by very long baseline interferometry. CHARLOT P., JACOBS C.S., GORDON D., et al.
2021A&A...655A..17S viz 17       D               1 338578 3 The SPECFIND V3.0 catalog of radio continuum cross-identifications and spectra: Reaching lower frequencies. STEIN Y., VOLLMER B., BOCH T., et al.
2022ApJS..260....4P viz 17       D               1 7976 3 Direction of Parsec-scale Jets for 9220 Active Galactic Nuclei. PLAVIN A.V., KOVALEV Y.Y. and PUSHKAREV A.B.
2022ApJS..260...33S viz 17       D               1 1015 3 The US Naval Observatory VLBI Spectroscopic Catalog. SEXTON R.O., SECREST N.J., JOHNSON M.C., et al.
2022ApJ...935....4Z viz 17       D               1 59 4 Classification and Jet Power of Fermi Blazars. ZHANG L., LIU Y. and FAN J.
2024ApJ...963...48G 134           X C       2 7 ~ The Remarkable Predictive Power of Infrared Data of Blazars. GIOMMI P., SAHAKYAN N., ISRAYELYAN D., et al.
2024ApJS..274...28C viz 18       D               1 4336 ~ Metrics of Astrometric Variability in the International Celestial Reference Frame. I. Statistical Analysis and Selection of the Most Variable Sources. CIGAN P., MAKAROV V.V., SECREST N.J., et al.
2025ApJS..278...11L 19       D               1 1265 ~ Discerning Misclassified Flat-spectrum Radio Quasars from Low-frequency-peaked BL Lacertae Objects. LIANG S., YANG W.G., ZHENG Y.G., et al.

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