NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2022-01-26 T12:12:13 PST
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Reference(s) for object [HB89] 1420+326

112 reference(s) found in NED.


1. 2021MNRAS.502.5245P N/A N/A
2. 2021ApJ...913..146M N/A N/A
3. 2021A&A...647A.163M N/A N/A
4. 2019ApJS..242....5X Xu, M. H.; Ande... Structure Effects for 3417 Celestial Reference Frame Radio Sources
5. 2019ApJS..242....4D D'Abrusco, Raff... Two New Catalogs of Blazar Candidates in the WISE Infrared Sky
6. 2018ApJS..239...33Y N/A N/A
7. 2018ApJS..239...20M N/A N/A
8. 2018A&A...613A..51P Paris, Isabelle... The Sloan Digital Sky Survey Quasar Catalog: Fourteenth data release
9. 2017MNRAS.469.1065D Dwelly, T.; Sal... SPIDERS: selection of spectroscopic targets using AGN candidates detected in all...
10. 2017MNRAS.467L..71P Petrov, L.; Kov... On significance of VLBI/Gaia position offsets
11. 2017MNRAS.467.4565L Liodakis, I.; P... Bimodal radio variability in OVRO-40 m-monitored blazars
12. 2017ApJS..228...22L Lee, Jeong Ae; ... Korean VLBI Network Calibrator Survey (KVNCS). 1. Source Catalog of KVN Single-d...
13. 2017ApJ...841..113M Mao, Peiyuan; U... An Investigation of Blazars without Redshifts: Not a Missing Population at High ...
14. 2016yCat.1337....0G Gaia Collaborat... VizieR Online Data Catalog: Gaia DR1 (Gaia Collaboration, 2016)
15. 2016ApJS..224...26M Mao, Peiyuan; U... A Comprehensive Statistical Description of Radio-through-Gamma-Ray Spectral Ener...
16. 2016AJ....151...20K Krawczyk, Colem... Erratum: "Mining for Dust in Type 1 Quasars" (2015, AJ, 149, 203)
17. 2015MNRAS.454.3864B Brotherton, Mic... Orientation and quasar black hole mass estimation
18. 2015MNRAS.452.4274P Pushkarev, A. B... Milky Way scattering properties and intrinsic sizes of active galactic nuclei co...
19. 2015MNRAS.452.4153A Albareti, Franc... Constraint on the time variation of the fine-structure constant with the SDSS-II...
20. 2015MNRAS.450.3568X Xiong, Dingrong... Basic properties of Fermi blazars and the 'blazar sequence'
21. 2015ApJS..221...12S Secrest, N. J.;... Identification of 1.4 Million Active Galactic Nuclei in the Mid-Infrared using W...
22. 2015ApJS..219...39R Richards, Gordo... Bayesian High-redshift Quasar Classification from Optical and Mid-IR Photometry
23. 2015ApJS..218...23A Acero, F.; Acke... Fermi Large Area Telescope Third Source Catalog
24. 2015ApJ...810...14A Ackermann, M.; ... The Third Catalog of Active Galactic Nuclei Detected by the Fermi Large Area Tel...
25. 2015AJ....150...58F Fey, A. L.; Gor... The Second Realization of the International Celestial Reference Frame by Very Lo...
26. 2015AJ....149..203K Krawczyk, Colem... Mining for Dust in Type 1 Quasars
27. 2015A&A...583A..75S Souchay, J.; An... The third release of the Large Quasar Astrometric Catalog (LQAC-3): a compilatio...
28. 2015A&A...581A.126S Selig, Marco; V... The denoised, deconvolved, and decomposed Fermi gamma-ray sky. An application of...
29. 2014MNRAS.439..690H Hovatta, T.; Pa... Connection between optical and gamma-ray variability in blazars
30. 2014MNRAS.438.3058R Richards, J. L.... Connecting radio variability to the characteristics of gamma-ray blazars
31. 2014ApJS..215...14D D'Abrusco, R.; ... The WISE Blazar-like Radio-loud Sources: An All-sky Catalog of Candidate gamma-r...
32. 2014AJ....147...95Z Zacharias, N.; ... Radio-Optical Reference Frame Link Using the U.S. Naval Observatory Astrograph a...
33. 2013ApJS..206....4K Krawczyk, Colem... Mean Spectral Energy Distributions and Bolometric Corrections for Luminous Quasa...
34. 2013ApJ...779..161S Seyffert, Eduar... Precious Metals in SDSS Quasar Spectra. II. Tracking the Evolution of Strong, 0....
35. 2013A&A...552A..98T Taris, F.; Andr... Optical monitoring of extragalactic sources for linking the ICRF and the future ...
36. 2013A&A...549A..55W Williams, W. L.... T-RaMiSu: the Two-meter Radio Mini Survey. I. The Bootes Field
37. 2012ApJ...753..106M MacLeod, Chelse... A Description of Quasar Variability Measured Using Repeated SDSS and POSS Imagin...
38. 2012ApJ...747...10W Wu, Jianfeng; B... X-Ray and Multiwavelength Insights into the Nature of Weak Emission-line Quasars...
39. 2012AJ....144...49W Wu, Xue-Bing; H... SDSS Quasars in the WISE Preliminary Data Release and Quasar Candidate Selection...
40. 2012AJ....143..119I Inada, Naohisa;... The Sloan Digital Sky Survey Quasar Lens Search. V. Final Catalog from the Seven...
41. 2012A&A...544A..34P Pushkarev, A. B... Single-epoch VLBI imaging study of bright active galactic nuclei at 2 GHz and 8 ...
42. 2012A&A...537A..99S Souchay, J.; An... The second release of the Large Quasar Astrometric Catalog (LQAC-2)
43. 2011MNRAS.410..860A Allen, James T.... A strong redshift dependence of the broad absorption line quasar fraction
44. 2011ApJS..194...45S Shen, Yue; Rich... A Catalog of Quasar Properties from Sloan Digital Sky Survey Data Release 7
45. 2011ApJS..194...29R Richards, Josep... Blazars in the Fermi Era: The OVRO 40 m Telescope Monitoring Program
46. 2011AJ....142...89P Petrov, L.; Tay... Precise Absolute Astrometry from the VLBA Imaging and Polarimetry Survey at 5 GH...
47. 2011AJ....141..182K Kimball, Amy E.... Correlations of Quasar Optical Spectra with Radio Morphology
48. 2010MNRAS.405.2302H Hewett, Paul C.... Improved redshifts for SDSS quasar spectra
49. 2010ApJ...719...45C Croft, Steve; B... The Allen Telescope Array Twenty-centimeter Survey---A 690 deg^2^, 12 Epoch Radi...
50. 2010AJ....139.2360S Schneider, Dona... The Sloan Digital Sky Survey Quasar Catalog. V. Seventh Data Release
51. 2009PASJ...61..123F Frey, S.; Gaban... Identification of Potential Weak Target Radio Quasars for ASTRO-G In-Beam Phase-...
52. 2009MNRAS.396..223D D'Abrusco, R.; ... Quasar candidates selection in the Virtual Observatory era
53. 2009ApJS..184..138H Haakonsen, Chri... XID II: Statistical Cross-Association of ROSAT Bright Source Catalog X-ray Sourc...
54. 2009ApJS..180...67R Richards, Gordo... Efficient Photometric Selection of Quasars from the Sloan Digital Sky Survey. II...
55. 2009A&A...506.1477T Titov, O.; Malk... Effect of asymmetry of the radio source distribution on the apparent proper moti...
56. 2009A&A...505..385A Andrei, A. H.; ... The large quasar reference frame (LQRF). An optical representation of the ICRS
57. 2009A&A...495..691M Massaro, E.; Gi... Roma-BZCAT: a multifrequency catalogue of blazars
58. 2009A&A...494..799S Souchay, J.; An... The construction of the large quasar astrometric catalogue (LQAC)
59. 2008ApJS..175...97H Healey, Stephen... CGRaBS: An All-Sky Survey of Gamma-Ray Blazar Candidates
60. 2008ApJ...688..826L Li, Zhao-Yu; Wu... The Black Hole Fundamental Plane: Revisited with a Larger Sample of Radio and X-...
61. 2008ApJ...680..169S Shen, Yue; Gree... Biases in Virial Black Hole Masses: An SDSS Perspective
62. 2008A&A...490..403B Bourda, G.; Cha... Astrometric suitability of optically-bright ICRF sources for the alignment with ...
63. 2007MNRAS.376..371J Jackson, N.; Ba... A survey of polarization in the JVAS/CLASS flat-spectrum radio source surveys - ...
64. 2007ApJS..171...61H Healey, Stephen... CRATES: An All-Sky Survey of Flat-Spectrum Radio Sources
65. 2007ApJ...658..203H Helmboldt, J. F... The VLBA Imaging and Polarimetry Survey at 5 GHz
66. 2007AJ....134..102S Schneider, Dona... The Sloan Digital Sky Survey Quasar Catalog. IV. Fifth Data Release
67. 2007AJ....133..313A Anderson, Scott... A Large, Uniform Sample of X-Ray-emitting Active Galactic Nuclei from the ROSAT ...
68. 2006MNRAS.368.1411A Augusto, Pedro;... Flat-spectrum symmetric objects with ~1kpc sizes - I. The candidates
69. 2005ApJ...626...95S Sowards-Emmerd,... A Northern Survey of Gamma-Ray Blazar Candidates
70. 2005AJ....130..923W Wrobel, J. M.; ... Faint Radio Sources in the NOAO Bootes Field: VLBA Imaging and Optical Identific...
71. 2004ApJ...616.1284M McGlynn, T. A.;... Automated Classification of ROSAT Sources Using Heterogeneous Multiwavelength So...
72. 2004AJ....127.3587F Fey, A. L.; Ma,... The Second Extension of the International Celestial Reference Frame: ICRF-EXT.1
73. 2003A&A...406..535Z Zickgraf, F.-J.... The Hamburg/RASS Catalogue of optical identifications. Northern high-galactic la...
74. 2002RRFID.C...0000F Fey, A. et al. Radio Reference Frame Image Database retrieved Aug 2002 from //rorf.usno.navy.mi...
75. 2002MNRAS.329..700S Snellen, I., Mc... Automated optical identification of a large complete northern hemisphere sample ...
76. 2002ApJS..141...23E Enya, K., Yoshi... JHK' Imaging Photometry of Seyfert 1 Active Galactic Nuclei and Quasars. I. Mult...
77. 2001AJ....121.2843B Barkhouse, W., ... Quasars in the 2MASS Second Incremental Data Release
78. 2001AJ....121.1741F Fey, A., Bobolt... Extragalactic Radio Source Selection for Use in Directly Linking Optical Astrome...
79. 2001A&A...374...92V Veron Cetty, M.... A catalogue of quasars and active nuclei: 10th edition
80. 2001A&A...368..431T Terasranta, H.,... Search for new flat-spectrum radio sources
81. 2000ApJS..128...17F Fey, A., Charlo... VLBA Observations of Radio Reference Frame Sources. III. Astrometric Suitability...
82. 2000ApJS..126..133W White, R. L., B... The First Bright Quasar Survey. II. 60 nights and 1200 spectra later
83. 2000A&A...363..141R Reich, W., Furs... Radio-loud active galaxies in the northern ROSAT All-Sky Survey. IV. Properties ...
84. 2000A&A...356..445B Brinkmann, W., ... Radio and X-ray bright AGN: the ROSAT - FIRST correlation
85. 1999AJ....118.1435W WADADEKAR, Y., ... A Study of Quasar Radio Emission from the VLA FIRST Survey
86. 1999A&A...349..389V VOGES, W., ASCH... The ROSAT all-sky survey bright source catalogue
87. 1998MNRAS.300..790W WILKINSON, P., ... Interferometer phase calibration sources - III. The regions +20<=delta_B1950<=+3...
88. 1998AJ....116..516M MA, C., ARIAS, ... The International Celestial Reference Frame as Realized by Very Long Baseline In...
89. 1998A&AS..132...31N NILSSON, K. Kinematical models of double radio sources and the unified scheme. II. The datab...
90. 1998A&AS..128..153M Machalski, J. The revised GB/GB2 sample of extragalactic radio sources
91. 1998A&AS..127..145B Bade, N., Engel... The Hamburg/RASS Catalogue of optical identifications
92. 1997A&AS..122..235L Laurent-Muehlei... Radio-loud active galaxies in the northern ROSAT All-Sky Survey
93. 1997A&A...319..413B Brinkmann W., Y... Broad band energy distribution of ROSAT detected quasars. I. Radio-loud objects
94. 1996AJ....111.1945D DOUGLAS, J. N.,... THE TEXAS SURVEY OF RADIO SOURCES COVERING -35.5^deg^ <{delta} < 71.5^deg^ AT 36...
95. 1995AJ....110..880J JOHNSTON, K. J.... A RADIO REFERENCE FRAME
96. 1995A&AS..109..147B Brinkmann, W., ... The ROSAT AGN content of the 87GB 5 GHz survey: bulk properties of previously op...
97. 1995A&A...300..323J Jaunsen, A. O.,... The NOT gravitational lens survey for multiply imaged quasars
98. 1994ApJ...427..125L LISTER, M. L., ... ORIENTATION MODELING OF RADIO GALAXY AND QUASAR PROPERTIES: EVIDENCE FOR A UNIFI...
99. 1993ApJS...87..451H HEWITT, A., AND... A REVISED AND UPDATED CATALOG OF QUASI-STELLAR OBJECTS
100. 1993ApJS...86..365P PRICE, R., GOWE... VLA OBSERVATIONS OF 91 QUASARS AT 0.35 < z < 1
101. 1993ApJ...413..453N NILSSON, K., VA... ON THE REDSHIFT-APPARENT SIZE DIAGRAM OF DOUBLE RADIO SOURCES
102. 1992ApJS...79..331W WHITE, R. L., A... A NEW CATALOG OF 30,239 1.4 GHz SOURCES
103. 1991ApJS...75.1011G GREGORY, P. C.,... THE 87GB CATALOG OF RADIO SOURCES COVERING 0^deg^ < {delta} < +75^deg^ AT 4.85 G...
104. 1991ApJS...75....1B BECKER, R. L., ... A NEW CATALOG OF 53,522 4.85 GHz SOURCES
105. 1990ApJS...72..621L LANGSTON, G. I.... THE SECOND MIT-GREEN BANK 5 GHz SURVEY
106. 1989ApJS...69....1H HEWITT, A., and... THE FIRST ADDITION TO THE NEW OPTICAL CATALOG OF QUASI-STELLAR OBJECTS
107. 1988ApJ...329..122H HUTCHINGS, J. B... RADIO EVOLUTION OF QUASARS AT z < 1
108. 1981ApJS...46..239S SIMARD-NORMANDI... LINEAR POLARIZATION OF EXTRAGALACTIC RADIO SOURCES AT 3.71 AND 11.1 CENTIMETERS
109. 1975MSAIt..46..461B BARBIERI C., CA... Catalogue of quasi-stellar-objects
110. 1974ApJ...190..271W Wills, D., and ... Spectroscopy of Objects Near Texas Radio-Source Positions
111. 1974A&A....34..285C CROVISIER J., L... 4850-MHz observations of a sample radio sources identified with quasars
112. 1970A&AS....1..281C COLLA, G., FANT... A CATALOGUE OF 3235 RADIO SOURCES AT 408 MHZ

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