8C 1221+809 , the SIMBAD biblio

8C 1221+809 , the SIMBAD biblio (111 results) C.D.S. - SIMBAD4 rel 1.8 - 2024.06.04CEST02:01:13

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Keywords 		in a table in teXt, Caption, ... Nb occurence Nb objects in ref Citations
(from ADS) 		Title First 3 Authors
1980AJ.....85..649P 32 89 Compact radio sources with faint components. PERLEY R.A., FOMALONT E.B. and JOHNSTON K.J.
1983AJ.....88.1126G 75 6 31.4 GHz flux density measurements of a complete sample of sources from the 5 GHz S5 survey. GELDZAHLER B.J. and KUHR H.
1983AJ.....88.1138M 213 20 Arcsecond positions for milliarcsecond VLBI nuclei of extragalactic radio sources. II. 207 sources. MORABITO D.D., PRESTON R.A. and SLADE M.A.
1984MNRAS.211...47S 124 19 Relative orientation of core polarization at lambda 6 cm and the overall radio axes of quasars. SAIKIA D.J. and SHASTRI P.
1985AJ.....90.1599P 1228 160 A VLBI survey at 2.29 GHz. PRESTON R.A., MORABITO D.D., WILLIAMS J.G., et al.
1989JApA...10..203S 38 19 Extragalactic sources with very asymmetric radio structure : VLA and MERLIN observations. SAIKIA D.J., SHASTRI P., CORNWELL T.J., et al.
1990AJ.....99....1K 52 111 Complete samples of radio-selected BL Lac objects. KUHR H. and SCHMIDT G.D.
1990MNRAS.245..408S 41 38 A VLA and MERLIN study of extragalactic radio sources with one-sided structure. SAIKIA D.J., JUNOR W., CORNWELL T.J., et al.
1991AJ....101.2266R 102 22 A radio optical reference frame. II. Additional radio and optical source positions in the northern hemisphere. RUSSELL J.L., JOHNSTON K.J., MA C., et al.
1992A&AS...96..339B 80 18 X-ray observations of flat spectrum radio sources with the HEAO-A, Einstein and EXOSAT observatories. BIERMANN P.L., SCHAAF R., PIETSCH W., et al.
1994ApJS...95..345T viz 193 124 The second Caltech-Jodrell bank VLBI survey. I. Observations of 91 of 193 sources. TAYLOR G.B., VERMEULEN R.C., PEARSON T.J., et al.
1995AJ....110..880J viz 632 155 A radio reference frame. JOHNSTON K.J., FEY A.L., ZACHARIAS N., et al.
1995ApJS..100....1H viz 102 88 The second Caltech-Jodrell bank VLBI survey. II. Observations of 102 of 193 sources. HENSTOCK D.R., BROWNE I.W.A., WILKINSON P.N., et al.
1995MNRAS.277.1477P viz 228 166 A sample-oriented catalogue of BL Lacertae objects. PADOVANI P. and GIOMMI P.
1996A&AS..115....1S viz 184 23 The current optical identification status of the S5 radio source catalogue. STICKEL M. and KUEHR H.
1996ApJS..107...37T 291 139 A complete flux-density-limited VLBI survey of 293 flat-spectrum radio sources. TAYLOR G.B., VERMEULEN R.C., READHEAD A.C.S., et al.
1997ApJ...474...47N 5 13 231 A measurement of the angular power spectrum of the anisotropy in the cosmic microwave background. NETTERFIELD C.B., DEVLIN M.J., JAROSIK N., et al.
1997ApJS..111...95F 134 173 VLBA observations of radio reference frame sources. II. Astrometric suitability based on observed structure. FEY A.L. and CHARLOT P.
1997MNRAS.290..380H 101 35 Redshifts for flat-spectrum radio sources in the second Caltech-Jodrell Bank VLBI sample. HENSTOCK D.R., BROWNE I.W.A., WILKINSON P.N., et al.
1998AJ....116..516M viz 609 623 The International Celestial Reference Frame as realized by very long baseline interferometry. MA C., ARIAS E.F., EUBANKS T.M., et al.
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.
1999MNRAS.302L..60S 72 8 Polarization of radio cores as a test of unified schemes. SAIKIA D.J.
2000AJ....119.1470D 316 12 Optical positions for a sample of ICRF sources. DA SILVA NETO D.N., ANDREI A.H., VIEIRA MARTINS R., et al.
2001A&A...370...78M viz 164 10 Observations of the bright radio sources in the North Celestial Pole region at the RATAN-600 radio telescope. MINGALIEV M.G., STOLYAROV V.A., DAVIES R.D., et al.
2001A&A...375..661G viz 264 23 Stability of the extragalactic VLBI reference frame. GONTIER A.-M., LE BAIL K., FEISSEL M., et al.
2002A&A...381..757L viz 493 57 A new list of extra-galactic radio jets. LIU F.K. and ZHANG Y.H.
2003A&A...403..105F         O           362 48 Selecting stable extragalactic compact radio sources from the permanent astrogeodetic VLBI program. FEISSEL-VERNIER M.
2003ApJ...589..733P viz 180 55 VLBI polarimetry of 177 sources from the Caltech-Jodrell Bank flat-spectrum survey. POLLACK L.K., TAYLOR G.B. and ZAVALA R.T.
2004ARep...48..941T viz 643 7 Construction of a celestial coordinate reference frame from VLBI data. TITOV O.A.
2006A&A...452.1107F         O           272 16 Analysis strategy issues for the maintenance of the ICRF axes. FEISSEL-VERNIER M., MA C., GONTIER A.-M., et al.
2006A&A...455..773V viz 108224 628 A catalogue of quasars and active nuclei: 12th edition. VERON-CETTY M.-P. and VERON P.
2007A&A...466...63W viz 15       D               173 29 VLBI observations of seven BL Lacertae objects from RGB sample. WU Z., JIANG D.R., GU M., et al.
2007A&A...472..763B viz 15       D               289 19 A multi-epoch VLBI survey of the kinematics of CJF sources. I. Model-fit parameters and maps. BRITZEN S., VERMEULEN R.C., TAYLOR G.B., et al.
2007A&A...476..759B viz 15       D               297 24 The soft X-ray properties of AGN from the CJF sample. A correlation analysis between soft X-ray and VLBI properties. BRITZEN S., BRINKMANN W., CAMPBELL R.M., et al.
2008A&A...484..119B viz 75             C       1 106 41 A multi-epoch VLBI survey of the kinematics of CFJ sources. II. Analysis of the kinematics. BRITZEN S., VERMEULEN R.C., CAMPBELL R.M., et al.
2009A&A...493..317L viz 15       D               267 13 On radio source selection to define a stable celestial frame. LAMBERT S.B. and GONTIER A.-M.
2009A&A...495..691M viz 15       D               2 3203 339 Roma-BZCAT: a multifrequency catalogue of blazars. MASSARO E., GIOMMI P., LETO C., et al.
2009ARep...53..487M 52 3 Spectral characteristics and variability of radio sources near the north celestial pole. MINGALIEV M.G., SOTNIKOVA Y.V., KARDASHEV N.S., 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 107939 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...512A..74M 359       D S   X         9 10 20 Multifrequency observations of a sample of very low frequency peaked BL Lacertae objects. MASELLI A., MASSARO E., NESCI R., et al.
2010ApJ...715..429A viz 15       D               1 812 471 The first catalog of active galactic nuclei detected by the Fermi Large Area Telescope. ABDO A.A., ACKERMANN M., AJELLO M., et al.
2010ApJS..188..405A viz 15       D               1 1513 938 Fermi Large Area Telescope First Source Catalog. ABDO A.A., ACKERMANN M., AJELLO M., et al.
2010A&A...518A..10V viz 15       D               1 168912 597 A catalogue of quasars and active nuclei: 13th edition. VERON-CETTY M.-P. and VERON P.
2011MNRAS.410.2113B 40           X         1 18 102 A radio census of binary supermassive black holes. BURKE-SPOLAOR S.
2011A&A...529A..16K 15       D               1 72 9 γ-rays in flat-spectrum AGN: revisiting the fast jet hypothesis with the CJF sample. KAROUZOS M., BRITZEN S., WITZEL A., et al.
2011A&A...529A..91T viz 15       D               1 563 60 VLBI measurement of the secular aberration drift. TITOV O., LAMBERT S.B. and GONTIER A.-M.
2011NewA...16..503M viz 15       D               1 803 14 2MASS observation of BL Lac objects II. MAO L.S.
2009RAA.....9..168W 15       D               1 171 19 The debeamed luminosity, sychrotron peak frequency and black hole mass of BL Lac objects. WU Z.-Z., GU M.-F. and JIANG D.-R.
2011ApJ...741...30A viz 15       D               1 600 101 The radio/gamma-ray connection in active galactic nuclei in the era of the Fermi Large Area Telescope. ACKERMANN M., AJELLO M., ALLAFORT A., et al.
2011A&A...535A..69N viz 15       D               1 250 21 Correlation between Fermi/LAT gamma-ray and 37 GHz radio properties of northern AGN averaged over 11 months. NIEPPOLA E., TORNIKOSKI M., VALTAOJA E., et al.
2011ApJ...743..171A viz 15       D               1 979 589 The second catalog of active galactic nuclei detected by the Fermi large area telescope. ACKERMANN M., AJELLO M., ALLAFORT A., et al.
2012ApJ...744..177L viz 15       D               1 237 41 Contemporaneous VLBA 5 GHz observations of Large Area Telescope detected blazars. LINFORD J.D., TAYLOR G.B., ROMANI R.W., et al.
2012ApJ...748...68D viz 15       D               2 297 86 Infrared colors of the gamma-ray-detected blazars. D'ABRUSCO R., MASSARO F., AJELLO M., et al.
2012ApJS..199...31N viz 15       D               1 2260 1282 Fermi Large Area Telescope second source catalog. NOLAN P.L., ABDO A.A., ACKERMANN M., et al.
2012MNRAS.424.2832L viz 15       D               1 1877 43 Application of the Gaussian mixture model in pulsar astronomy – pulsar classification and candidates ranking for the Fermi 2FGL catalogue. LEE K.J., GUILLEMOT L., YUE Y.L., et al.
2012ApJ...757...25L viz 15       D               1 231 7 Gamma-ray loudness, synchrotron peak frequency, and parsec-scale properties of blazars detected by the Fermi Large Area Telescope. LINFORD J.D., TAYLOR G.B. and SCHINZEL F.K.
2012ApJ...761..125F viz 15       D               2 465 22 The spectral index properties of Fermi blazars. FAN J.H., YANG J.H., YUAN Y.H., et al.
2013ApJ...764..135S viz 16       D               1 373 191 Spectroscopy of the largest ever γ-ray-selected BL Lac sample. SHAW M.S., ROMANI R.W., COTTER G., et al.
2013MNRAS.430.2633X viz 16       D               1 296 10 A new concept of the International Celestial Reference Frame: the epoch ICRF. XU M.H., WANG G.L. and ZHAO M.
2013ApJS..206...12D viz 16       D               3 697 65 Unveiling the nature of unidentified gamma-ray sources. I. A new method for the association of gamma-ray blazars. D'ABRUSCO R., MASSARO F., PAGGI A., et al.
2013A&A...553A.122L viz 16       D               1 295 6 Time stability of the ICRF2 axes. LAMBERT S.
2013MNRAS.435.2793R 16       D               1 78 3 A 20GHz bright sample for δ > 72° - II. Multifrequency follow-up. RICCI R., RIGHINI S., VERMA R., et al.
2014MNRAS.438.3058R viz 16       D               1 1414 31 Connecting radio variability to the characteristics of gamma-ray blazars. RICHARDS J.L., HOVATTA T., MAX-MOERBECK W., et al.
2014MNRAS.439..690H viz 16       D               1 1318 51 Connection between optical and γ-ray variability in blazars. HOVATTA T., PAVLIDOU V., KING O.G., et al.
2014A&A...562A..64W viz 16       D               1 170 6 Why are some BL Lacertaes detected by Fermi, but others not? WU Z., JIANG D., GU M., 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.
2014ApJS..213....3M viz 16       D               1 28367 27 The Low-frequency Radio Catalog of flat-spectrum sources. MASSARO F., GIROLETTI M., D'ABRUSCO R., 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.
2014RAA....14.1135F viz 16       D               1 454 19 The lower limit of the Doppler factor for a Fermi blazar sample. FAN J.-H., BASTIERI D., YANG J.-H., et al.
2015ApJS..217....2M viz 16       D               2 2201 42 Refining the associations of the Fermi large area telescope source catalogs. MASSARO F., D'ABRUSCO R., LANDONI M., et al.
2015ApJS..218...23A viz 16       D               1 3139 1411 Fermi Large Area Telescope third source catalog. ACERO F., ACKERMANN M., AJELLO M., 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.
2015ApJ...810...14A viz 16       D               1 1898 513 The third catalog of active galactic nuclei detected by the Fermi large area telescope. ACKERMANN M., AJELLO M., ATWOOD W.B., et al.
2015Ap&SS.357...75M viz 16       D               1 3563 223 The 5th edition of the Roma-BZCAT. A short presentation. MASSARO E., MASELLI A., LETO C., et al.
2016AJ....151...79L viz 16       D               1 195 9 IVS observation of ICRF2-Gaia transfer sources. LE BAIL K., GIPSON J.M., GORDON D., et al.
2016ApJ...820....8S viz 16       D               1 3046 91 Classification and ranking of Fermi LAT gamma-ray sources from the 3FGL catalog using machine learning techniques. SAZ PARKINSON P.M., XU H., YU P.L.H., et al.
2016ApJS..226...20F viz 16       D               1 1394 122 The spectral energy distributions of Fermi blazars. FAN J.H., YANG J.H., LIU Y., et al.
2016A&A...595A...5M viz 16       D               1 2192 40 Gaia Data Release 1. Reference frame and optical properties of ICRF sources. MIGNARD F., KLIONER S., LINDEGREN L., et al.
2017ApJ...835L..30M viz 16       D               1 188 9 Astrometric evidence for a population of dislodged AGNs. MAKAROV V.V., FROUARD J., BERGHEA C.T., et al.
2017ApJS..228...22L viz 16       D               2 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.
2017MNRAS.466.1567L viz 16       D               1 324 1 Test of source selection for constructing a more stable and uniform celestial reference frame. LIU N., LIU J.-C. and ZHU Z.
2017ApJ...841..113M viz 16       D               1 2944 1 An investigation of blazars without redshifts: not a missing population at high redshift. MAO P. and URRY C.M.
2017MNRAS.467.4565L viz 16       D               1 1193 4 Bimodal radio variability in OVRO-40 m-monitored blazars. LIODAKIS I., PAVLIDOU V., HOVATTA T., et al.
2017ApJS..232...18A viz 16       D               1587 263 3FHL: the Third Catalog of Hard Fermi-LAT Sources. AJELLO M., ATWOOD W.B., BALDINI L., et al.
2017ApJS..233....3T viz 16       D               1 721 23 The VLBA Extragalactic Proper Motion Catalog and a measurement of the secular aberration drift. TRUEBENBACH A.E. and DARLING J.
2017AN....338..700M viz 16       D               1 291 ~ Simultaneous spectra and radio properties of BL Lac's. MINGALIEV M.G., SOTNIKOVA Y.V., MUFAKHAROV T.V., et al.
2018ApJS..235...39C viz 16       D               1 1396 63 On the jet properties of γ-ray-loud active galactic nuclei. CHEN L.
2018ApJ...861..113D viz 16       D               1 581 11 Astrometric limits on the stochastic gravitational wave background. DARLING J., TRUEBENBACH A.E. and PAINE J.
2018ApJS..237...32A viz 16       D               1 2605 130 The search for spatial extension in high-latitude sources detected by the Fermi Large Area Telescope. ACKERMANN M., AJELLO M., BALDINI L., et al.
2018ApJ...866..137L viz 16       D               1 1032 70 Constraining the limiting brightness temperature and Doppler factors for the largest sample of radio-bright blazars. LIODAKIS I., HOVATTA T., HUPPENKOTHEN D., et al.
2018A&A...618A..80G viz 16       D               1 647 ~ Extragalactic radio source stability and VLBI celestial reference frame: insights from the Allan standard deviation. GATTANO C., LAMBERT S.B. and LE BAIL K.
2018A&A...619A..23C viz 16       D               1 1352 ~ A MST catalogue of γ-ray source candidates above 10 GeV and at Galactic latitudes higher than 20°. CAMPANA R., MASSARO E. and BERNIERI E.
2018RAA....18...56K viz 16       D               1 1421 3 On the intrinsic shape of the gamma-ray spectrum for Fermi blazars. KANG S.-J., WU Q., ZHENG Y.-G., et al.
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.
2019ApJS..242....5X viz 17       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 17       D               2 3584 ~ Realization of a multifrequency celestial reference frame through a combination of normal equation systems. KARBON M. and NOTHNAGEL A.
2019A&A...631A.150M viz 17       D               1 339 ~ The γ-ray sky seen at X-ray energies. I. Searching for the connection between X-rays and γ-rays in Fermi BL Lac objects. MARCHESINI E.J., PAGGI A., MASSARO F., et al.
2020ApJS..247...33A viz 17       D               1 5180 880 Fermi Large Area Telescope fourth source catalog. ABDOLLAHI S., ACERO F., ACKERMANN M., et al.
2020ApJ...892..105A viz 17       D               1 3424 235 The fourth catalog of active galactic nuclei detected by the Fermi Large Area Telescope. AJELLO M., ANGIONI R., AXELSSON M., et al.
2020PASP..132k4102P viz 17       D               1 585 ~ Beamed and unbeamed emission of γ-ray blazars. PEI Z., FAN J., YANG J., et al.
2020A&A...644A.159C viz 17       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.
2021AJ....162...21B viz 17       D               5 2594 ~ Optical variability of ICRF3 quasars in the Pan-STARRS 3pi survey with Functional Principal Component Analysis. BERGHEA C.T., MAKAROV V.V., QUIGLEY K., et al.
2021MNRAS.505.5853G 17       D               2 5840 ~ Artificial Neural Network classification of 4FGL sources. GERMANI S., TOSTI G., LUBRANO P., et al.
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.
2022ApJ...925...97P viz 18       D               1 809 5 The Estimation of Fundamental Physics Parameters for Fermi-LAT Blazars. PEI Z., FAN J., YANG J., et al.
2022A&A...660A..87B viz 18       D               2 6192 10 Machine learning methods for constructing probabilistic Fermi-LAT catalogs. BHAT A. and MALYSHEV D.
2022ApJS..260...53A viz 18       D               1 6714 133 Incremental Fermi Large Area Telescope Fourth Source Catalog. ABDOLLAHI S., ACERO F., BALDINI L., et al.
2022ApJS..262...18Y viz 18       D               1 2709 8 The Spectral Energy Distributions for 4FGL Blazars. YANG J.H., FAN J.H., LIU Y., et al.
2022ApJS..263...24A viz 18       D               1 3830 15 The Fourth Catalog of Active Galactic Nuclei Detected by the Fermi Large Area Telescope: Data Release 3. AJELLO M., BALDINI L., BALLET J., et al.
2023ApJS..268...23F viz 19       D               1 2708 ~ Characterizing the Emission Region Properties of Blazars. FAN J., XIAO H., YANG W., et al.

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