7C 1428+4218

Query : 7C 1428+4218

Basic data :
7C 1428+4218 -- Quasar
Origin of the objects types :

(Ref) Object type as listed in the reference "Ref"
(acronym) Object type linked to the acronym according to the original reference
() Anterior to 2007, before we can link the objet type to a reference, or given by the CDS team in some particular cases

Other object types:
Rad (7C,B3,...), QSO (2010A&A,QSO,...), X (2009A&A,RX,...), Bla (2009A&A,[DGT2001],...), AGN (2016A&A), gam (INTREF), * (Gaia)
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
ICRS coord. (ep=J2000) :
14 30 23.74163330 +42 04 36.4911889 (Radio) [ 0.1012 0.1303 90 ] A 2015AJ....150...58F
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
FK4 coord. (ep=B1950 eq=1950) :
14 28 26.70648818 +42 17 53.0649720 [ 0.1012 0.1303 90 ]
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
Gal coord. (ep=J2000) :
075.86795833722 +64.89462142549 [ 0.1012 0.1303 90 ]
Syntax of proper motions is : "pm-ra pm-dec [error ellipse] quality bibcode"
  • pm-ra : mu-ra*cos(dec) (expressed in the ICRS system in mas/yr)
  • pm-dec : mu-dec (expressed in the ICRS system in mas/yr)
  • [error ellipse] : error major axis and minor axis (in mas), orientation angle (in deg)
  • quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality)
  • bibcode : bibcode of the proper motion reference
Proper motions mas/yr :
1.366 -2.115 [1.484 2.193 90] A 2018yCat.1345....0G
Syntax of radial velocity (or/and redshift) is : "value [error] (wavelength) quality bibcode"
  • value : radial velocity or/and redshift (Heliocentric frame) according to your Output Options
    (redshift may be not displayed if the data value is <0 and the database inside value is a radial velocity)
  • [error] : error of the corresponding value displayed before
  • (wavelength) : wavelength range of the measurement : Rad, mm, IR, Opt, UV, Xray, Gam or  '∼'(unknown)
  • quality : flag of quality ( A=best quality -> E=worst quality, {� } =unknown quality)
  • bibcode : bibcode of the value's origin
Radial velocity / Redshift / cz :
V(km/s) 281620 [132] / z(spectroscopic) 4.65633 [0.00044] / cz 1395932.6 [131.9]
   (Opt) C 2015ApJS..219...12A
Syntax of parallax is : 'value quality [error] bibcode'
  • value : parallax value
  • quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality)
  • [error] : mean error
  • bibcode : bibcode of the parallax reference
Parallaxes (mas):
1.6701 [1.1970] A 2018yCat.1345....0G
Syntax of fluxes (or magnitudes) is : "filter-name (System) flux-value [error] quality MultVarFlags bibcode"
  • filter-name : U, B, V, R, I, G, J, H, K, u, g, r, i, z
  • (System) : may be AB (default is Vega)
  • flux-value : value of flux or magnitude
  • [error] : error value
  • quality : flag of quality of the flux value ( A=best quality -> E=worst quality, {� } =unknown quality)
  • MultVarFlags : Mult is zero or one char (J) for joined photometry ; Var can be zero or two chars (V[0-4])
  • bibcode : bibcode of the flux reference
Fluxes (9) :
B 24.43 [~] D 2010A&A...518A..10V
V 22.04 [~] D 2010A&A...518A..10V
R 20.2 [~] E 2009A&A...495..691M
G 20.8369 [0.0179] C 2018yCat.1345....0G
u (AB) 24.120 [0.53] D 2014A&A...563A..54P
g (AB) 23.307 [0.135] D 2014A&A...563A..54P
r (AB) 20.9920 [0.0348] C 2018A&A...613A..51P
i (AB) 19.143 [0.014] C 2009ApJS..182..543A
z (AB) 19.3294 [0.0456] C 2018A&A...613A..51P
SIMBAD within arcmin
', {sourceSize:12, color:'#30a090'})); aladin.on('objectClicked', function(object) { var objName=object.data.MAIN_ID; aladin.showPopup(object.ra,object.dec,'',''+ objName+''); });" title="Show Simbad objects"> Overlay Simbad points in this preview
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within arcsec The VizieR photometry tool allows for easy visualization of photometry points extracted around the Simbad position from photometry-enabled catalogues in VizieR.
The search radius has to be specified by the user. It is currently limited to a maximum of 30 arcsec. It depends mostly on the precision or quality of the coordinates (SIMBAD and VizieR catalogs), the resolution of the images from which the sources were extracted, source extent, and source crowding.
Suggestions are: crowded field: 0.5 to 1.5 arcsec, 3 arcsec otherwise; uncertain coordinates (SIMBAD quality E or coordinates without reference): 5 to 30 arsec (risky!).
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Some important notes on this object about identifications and objects associations.
notes:


The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (45) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

7C 1428+4218 IERS B1428+422 1RXS J143023.7+420428 [MGL2009] BZQ J1430+4204
B3 1428+422 INTREF 611 SDSS J143023.74+420436.5 [MML2015] 5BZQ J1430+4204
BWE 1428+4218 IVS B1428+422 SDSS J143023.74+420436.4 [VV2000] J143023.7+420437
7C 142826.80+421756.00 JVAS J1430+420 SDSS J143023.73+420436.5 [VV2003] J143023.7+420437
CLASS B1428+422 JVAS J1430+4204 TXS 1428+422 [VV2006] J143023.7+420437
CLASS J143023.7408+420436.497 JVAS B1428+422 WB 1428+4218 [VV2010] J143023.7+420437
FIRST J143023.7+420436 NVSS J143023+420436 WN B1428.4+4217 [VV98] J143023.7+420437
GB6 J1430+4204 QSO B1428+4217 2XMM J143023.7+420436 Gaia DR2 1491604311829975296
GB6 B1428+4217 RGB J1430+420 3XMM J143023.7+420436 Gaia DR1 1491604311829975296
GB6 B1428+4218 RGB J1430.4+4204 [BSF97] J143023.74+420436.5
87GB 142825.9+421804 RX J1430.3+4203 [DGT2001] B1428+422
ICRF J143023.7+420436 RX J1430.4+4204 [MGL2009] BZQ J1430+4205

References (63 between 1850 and 2009) (Total 126)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
Follow new references on this object
                Reference summaries :

                from: to:

                 or select by : (not exhaustive, explanation here)



2009A&A...495..691M       [ D ,2]
Astronomy and Astrophysics, volume 495, 691-696 (2009/2-4)
Roma-BZCAT: a multifrequency catalogue of blazars.
MASSARO E., GIOMMI P., LETO C., MARCHEGIANI P., MASELLI A., PERRI M., PIRANOMONTE S. and SCLAVI S.
<Available at CDS (J/A+A/495/691): bzcat.dat>

Simbad objects: 3203
dic: Table bzcat.dat: <[MGL2009] BZB JHHMM+DDMM>, <[MGL2009] BZQ JHHMM+DDMM>, <[MGL2009] BZU JHHMM+DDMM>, <[MGL2009] BZB J1701+3954b>, N=2837.

2009A&A...505..385A       [ D ,1]
Astronomy and Astrophysics, volume 505, 385-404 (2009/10-1)
The large quasar reference frame (LQRF). An optical representation of the ICRS.
ANDREI A.H., SOUCHAY J., ZACHARIAS N., SMART R.L., VIEIRA MARTINS R., DA SILVA NETO D.N., CAMARGO J.I.B., ASSAFIN M., BARACHE C., BOUQUILLON S., et al.
<CDS Catalogue: I/313>
Simbad objects: 99836

2009ApJ...704...38S       [ D ,1]
Astrophys. J., 704, 38-50 (2009/October-2)
Constraining emission models of luminous blazar sources.
SIKORA M., STAWARZ L., MODERSKI R., NALEWAJKO K. and MADEJSKI G.M.
Simbad objects: 20

2009ApJ...707.1310A       [ X ,1]
Astrophys. J., 707, 1310-1333 (2009/December-3)
Fermi observations of TeV-selected active galactic nuclei.
ABDO A.A., ACKERMANN M., AJELLO M., ATWOOD W.B., AXELSSON M., BALDINI L., BALLET J., BARBIELLINI G., BARING M.G., BASTIERI D., et al.
Simbad objects: 99

2009MNRAS.397..985G       [ X D F ,6]
Mon. Not. R. Astron. Soc., 397, 985-1002 (2009/August-1)
Canonical high-power blazars.
GHISELLINI G. and TAVECCHIO F.
Simbad objects: 5

2009PASJ...61..123F       [ D ,1]
Publ. Astron. Soc. Jap., 61, 123-127 (2009)
Identification of potential weak target radio quasars for ASTRO-G in-beam phase-referencing.
FREY S., GABANYI K.E. and ASAKI Y.
Simbad objects: 23

2009PASJ...61..805Y       [ X D ,3]
Publ. Astron. Soc. Jap., 61, 805-823 (2009)
Energy spectra of the soft X-Ray diffuse emission in fourteen fields observed with Suzaku.
YOSHINO T., MITSUDA K., YAMASAKI N.Y., TAKEI Y., HAGIHARA T., MASUI K., BAUER M., McCAMMON D., FUJIMOTO R., WANG Q.D., et al.
Simbad objects: 10

2008A&A...480..715M       [ X ,1]
Astronomy and Astrophysics, volume 480, 715-721 (2008/3-4)
High-redshift blazar identification for Swift J1656.3-3302.
MASETTI N., MASON E., LANDI R., GIOMMI P., BASSANI L., MALIZIA A., BIRD A.J., BAZZANO A., DEAN A.J., GEHRELS N., et al.
Simbad objects: 7

2008AJ....135..333D       [ X ,1]
Astron. J., 135, 333-337 (2008/January-0)
Variable X-ray absorption toward the gravitationally-lensed blazar PKS 1830-211.
DAI X., MATHUR S., CHARTAS G., NAIR S. and GARMIRE G.P.
Simbad objects: 4

2008MNRAS.385..283C       [ X D F ,4]
Mon. Not. R. Astron. Soc., 385, 283-300 (2008/March-3)
The power of blazar jets.
CELOTTI A. and GHISELLINI G.
Simbad objects: 74

2008MNRAS.386..945T       [ S X C F ,5]
Mon. Not. R. Astron. Soc., 386, 945-952 (2008/May-2)
The spectrum of the broad-line region and the high-energy emission of powerful blazars.
TAVECCHIO F. and GHISELLINI G.
Simbad objects: 1

2008MNRAS.387.1669G       [ X ,1]
Mon. Not. R. Astron. Soc., 387, 1669-1680 (2008/July-2)
The blazar sequence: a new perspective.
GHISELLINI G. and TAVECCHIO F.
Simbad objects: 12

2008MNRAS.388L..54D       [ X ,2]
Mon. Not. R. Astron. Soc., 388, L54-L58 (2008/July-3)
Bulk Compton motion in the luminous quasar 4C04.42?
DE ROSA A., BASSANI L., UBERTINI P., MALIZIA A. and DEAN A.J.
Simbad objects: 8

2007MNRAS.375..417C       [ K ]
Mon. Not. R. Astron. Soc., 375, 417-424 (2007/February-3)
Bulk Comptonization spectra in blazars.
CELOTTI A., GHISELLINI G. and FABIAN A.C.
Simbad objects: 3

2006A&A...449..425M       [ D ,1]
Astronomy and Astrophysics, volume 449, 425-433 (2006/4-1)
Optical identification of ROSAT-FSC sources.
MICKAELIAN A.M., HOVHANNISYAN L.R., ENGELS D., HAGEN H.-J. and VOGES W.
<Available at CDS (J/A+A/449/425): table1.dat>
Simbad objects: 2696
dic: Table 1: <[MHE2006] JHHMMSS.ss+DDMMSS.s> N=3202.

2006A&A...455..773V       []
Astronomy and Astrophysics, volume 455, 773-777 (2006/8-4)
A catalogue of quasars and active nuclei: 12th edition.
VERON-CETTY M.-P. and VERON P.
<CDS Catalogue: VII/248>
Simbad objects: 108222
dic: qso.dat: <[VV2006] JHHMMSS.s+DDMMSSa> N=85221. bllac.dat: <[VV2006b] JHHMMSS.s+DDMMSSa> N=1122. agn.dat: <[VV2006c] JHHMMSS.s+DDMMSSa> N=21737.

2006AJ....131...55G       []
Astron. J., 131, 55-69 (2006/January-0)
XMM-Newton observations of high-redshift quasars.
GRUPE D., MATHUR S., WILKES B. and OSMER P.
Simbad objects: 21

2006MNRAS.368..844W       [T K ]
Mon. Not. R. Astron. Soc., 368, 844-850 (2006/May-2)
Radio and X-ray observations of an exceptional radio flare in the extreme z = 4.72 blazar GB B1428+4217.
WORSLEY M.A., FABIAN A.C., POOLEY G.G. and CHANDLER C.J.
Simbad objects: 8

2006MNRAS.368..985Y       []
Mon. Not. R. Astron. Soc., 368, 985-992 (2006/May-2)
X-ray spectral properties of high-redshift radio-loud quasars beyond redshift 4 - first results.
YUAN W., FABIAN A.C., WORSLEY M.A. and McMAHON R.G.
Simbad objects: 9

2005A&A...433.1163D       []
Astronomy and Astrophysics, volume 433, 1163-1169 (2005/4-3)
Six years of BeppoSAX observations of blazars: A spectral catalog.
DONATO D., SAMBRUNA R.M. and GLIOZZI M.
<Available at CDS (J/A+A/433/1163): table1.dat table2.dat table3.dat table4.dat table5.dat>
Simbad objects: 87

2005A&A...438..121D       []
Astronomy and Astrophysics, volume 438, 121-126 (2005/7-4)
The broad-band X-ray spectrum of the blazar PKS B1830-211 by Chandra and INTEGRAL.
DE ROSA A., PIRO L., TRAMACERE A., MASSARO E., WALTER R., BASSANI L., MALIZIA A., BIRD A.J. and DEAN A.J.
Simbad objects: 8

2005MNRAS.358..432Y       []
Mon. Not. R. Astron. Soc., 358, 432-440 (2005/April-1)
XMM observations of the high-redshift quasar RXJ1028.6-0844 at {\em z}= 4.276: soft X-ray spectral flattening.
YUAN W., FABIAN A.C., CELOTTI A., McMAHON R.G. and MATSUOKA M.
Simbad objects: 4

2005MNRAS.364..195P       []
Mon. Not. R. Astron. Soc., 364, 195-207 (2005/November-3)
XMM-Newton spectroscopy of high-redshift quasars.
PAGE K.L., REEVES J.N., O'BRIEN P.T. and TURNER M.J.L.
Simbad objects: 87

2004AJ....127....1G       []
Astron. J., 127, 1-9 (2004/January-0)
XMM-Newton observations of two high-redshift quasars: RX J1028-0844 and BR 0351-1034.
GRUPE D., MATHUR S., WILKES B. and ELVIS M.
Simbad objects: 13

2004AJ....127.3587F       [ D ]
Astron. J., 127, 3587-3608 (2004/June-0)
The second extension of the international celestial reference frame: ICRF-EXT.1.
FEY A.L., MA C., ARIAS E.F., CHARLOT P., FEISSEL-VERNIER M., GONTIER A.-M., JACOBS C.S., LI J. and MacMILLAN D.S.
<Available at CDS (J/AJ/127/3587): table1.dat table2.dat table3.dat>
Simbad objects: 504
dic: Table 1: <ICRF JHHMMSS.s+DDMMSS> N=109.

2004AJ....128..523B       []
Astron. J., 128, 523-533 (2004/August-0)
Chandra observations of radio-loud quasars at z>4: x-rays from the radio beacons of the early universe.
BASSETT L.C., BRANDT W.N., SCHNEIDER D.P., VIGNALI C., CHARTAS G. and GARMIRE G.P.
Simbad objects: 19

2004ARep...48..941T       []
Astron. Rep., 48, 941-948 (2004)
Construction of a celestial coordinate reference frame from VLBI data.
TITOV O.A.
<Available at CDS (J/other/ARep/48.941): catalog.dat>
Simbad objects: 643

2004ApJ...600L..27B       []
Astrophys. J., 600, L27-L30 (2004/January-1)
X-ray emission from the quasar PKS 1127-145: comptonized infrared photons on parsec scales.
BLAZEJOWSKI M., SIEMIGINOWSKA A., SIKORA M., MODERSKI R. and BECHTOLD J.
Simbad objects: 5

2004MNRAS.350..207W       []
Mon. Not. R. Astron. Soc., 350, 207-212 (2004/May-1)
XMM-Newton confirmation of a warm absorber in the z= 4.4 blazar PMN J0525-3343.
WORSLEY M.A., FABIAN A.C., TURNER A.K., CELOTTI A. and IWASAWA K.
Simbad objects: 3

2004MNRAS.350L..67W       [T K ]
Mon. Not. R. Astron. Soc., 350, L67-L71 (2004/June-1)
XMM-Newton observations of GB B1428+4217: confirmation of intrinsic soft X-ray absorption.
WORSLEY M.A., FABIAN A.C., CELOTTI A. and IWASAWA K.
Simbad objects: 4

2003A&A...411L..59E       []
Astronomy and Astrophysics, volume 411, L59-62 (2003/11-3)
High-energy sources before INTEGRAL. INTEGRAL reference catalog.
EBISAWA K., BOURBAN G., BODAGHEE A., MOWLAVI N. and COURVOISIER T.J.-L.
<Available at CDS (J/A+A/411/L59): catalog.dat catalog.tex>
Simbad objects: 1015
Status at CDS: All or part of tables of objects will not be ingested in SIMBAD.
dic: Catalogue: <INTREF NNNN> (Nos 1-1122).

2003AJ....125.1053H       []
Astron. J., 125, 1053-1059 (2003/March-0)
Host galaxies of z~4.7 quasars.
HUTCHINGS J.B.
Simbad objects: 5

2002A&A...384L..23A       []
Astronomy and Astrophysics, volume 384, L23-26 (2002/3-4)
TeV gamma rays from the blazar H 1426+428 and the diffuse extragalactic background radiation.
AHARONIAN F., AKHPERJANIAN A., BARRIO J., BEILICKE M., BERNLOEHR K., BOERST H., BOJAHR H., BOLZ O., CONTRERAS J., CORNILS R., et al.
Simbad objects: 12

2002A&A...386..833G       []
Astronomy and Astrophysics, volume 386, 833-842 (2002/5-2)
Low power BL Lacertae objects and the blazar sequence. Clues on the particle acceleration process.
GHISELLINI G., CELOTTI A. and COSTAMANTE L.
Simbad objects: 15

2002MNRAS.329..700S       []
Mon. Not. R. Astron. Soc., 329, 700-746 (2002/February-1)
Automated optical identification of a large complete northern hemisphere sample of flat-spectrum radio sources with S_6cm_>200mJy.
SNELLEN I.A.G., McMAHON R.G., HOOK I.M. and BROWNE I.W.A.
<Available at CDS (J/MNRAS/329/700): list1.dat list2.dat list3.dat>
Simbad objects: 1288
dic: Table A2: <JVAS JHHMM+DDMM> N=153.

2001A&A...375..739D       []
Astronomy and Astrophysics, volume 375, 739-751 (2001/9-1)
Hard X-ray properties of blazars.
DONATO D., GHISELLINI G., TAGLIAFERRI G. and FOSSATI G.
<Available at CDS (J/A+A/375/739): table5.dat refs.dat>
Simbad objects: 268
dic: Table 5: <[DGT2001] BHHMM+DDd> or <[DGT2001] BHHMM+DDMM> N=208, <[DGT2001] JHHMM+DDd> or <[DGT2001] JHHMM+DDMM> N=60.

2001AJ....121..591B       []
Astron. J., 121, 591-597 (2001/February-0)
An XMM-Newton detection of the z=5.80 X-ray-weak quasar SDSSp J104433.04-012502.2.
BRANDT W.N., GUAINAZZI M., KASPI S., FAN X., SCHNEIDER D.P., STRAUSS M.A., CLAVEL J. and GUNN J.E.
Simbad objects: 14

2001AJ....121.2843B       []
Astron. J., 121, 2843-2850 (2001/May-0)
Quasars in the 2MASS second incremental data release.
BARKHOUSE W.A. and HALL P.B.
<Available at CDS (J/AJ/121/2843): table1.dat table2.dat>
Simbad objects: 6250
dic: Tables 1, 2: <2MASSI JHHMMSSs+DDMMSS> N=2277+3999.

2001AJ....122.2143V       []
Astron. J., 122, 2143-2155 (2001/November-0)
Exploratory Chandra observations of the highest-redshift quasars: x-rays from the dawn of the modern universe.
VIGNALI C., BRANDT W.N., FAN X., GUNN J.E., KASPI S., SCHNEIDER D.P. and STRAUSS M.A.
Simbad objects: 51

2001MNRAS.323..373F       []
Mon. Not. R. Astron. Soc., 323, 373-379 (2001/May-2)
PMN J0525-3343: soft X-ray spectral flattening in a blazar at z=4.4.
FABIAN A.C., CELOTTI A., IWASAWA K., McMAHON R.G., CARILLI C.L., BRANDT W.N., GHISELLINI G. and HOOK I.M.
Simbad objects: 6

2001MNRAS.324..623C       []
Mon. Not. R. Astron. Soc., 324, 623-627 (2001/July-1)
Optical studies of two Large Magellanic Cloud X-ray transients: RX J0544.1-7100 and RX J0520.5-6932.
COE M.J., NEGUERUELA I., BUCKLEY D.A.H., HAIGH N.J. and LAYCOCK S.G.T.
Simbad objects: 12

2001MNRAS.324..628F       [T K ]
Mon. Not. R. Astron. Soc., 324, 628-634 (2001/July-1)
The blazar GB 1428+4217: a warm absorber at z=4.72.
FABIAN A.C., CELOTTI A., IWASAWA K. and GHISELLINI G.
Simbad objects: 1

2001MNRAS.325.1167S       []
Mon. Not. R. Astron. Soc., 325, 1167-1172 (2001/August-2)
A search for distant radio-loud quasars in the CLASS survey: three new radio-selected quasars at z > 4.
SNELLEN I.A.G., McMAHON R.G., DENNETT-THORPE J., JACKSON N., MACK K.-H. and XANTHOPOULOS E.
Simbad objects: 32
dic: Table 2: <[SMD2001] JHHMMSS+DDMMSS> N=10+13+2.

2001MmSAI..72..153C       []
Mem. Soc. Astron. Ital., 72, 153-154 (2001)
Looking for high energy peaked blazars.
COSTAMANTE L., GHISELLINI G., CELOTTI A., GIOMMI P., PADOVANI P., TAGLIAFERRI G., WOLTER A., CHIABERGE M., FOSSATI G., PIAN E., et al.
Simbad objects: 7

2000A&A...356..445B       [ D ]
Astronomy and Astrophysics, volume 356, 445-462 (2000/4-2)
Radio and X-ray bright AGN: the ROSAT - FIRST correlation.
BRINKMANN W., LAURENT-MUEHLEISEN S.A., VOGES W., SIEBERT J., BECKER R.H., BROTHERTON M.S., WHITE R.L. and GREGG M.D.
<Available at CDS (J/A+A/356/445): table1.dat table2.dat tables.tex>
Simbad objects: 881

2000A&A...363..141R       []
Astronomy and Astrophysics, volume 363, 141-153 (2000/11-1)
Radio-loud active galaxies in the northern ROSAT All-Sky Survey. IV. Properties of sources stronger than 100 mJy at 5 GHz.
REICH W., FUERST E., REICH P., KOTHES R., BRINKMANN W. and SIEBERT J.
<Available at CDS (J/A+A/363/141): table1.dat table2.dat>
Simbad objects: 752
dic: Table 1: <RGB JHHMM.m+ddMM> N=741.

2000AJ....119.1526S       []
Astron. J., 119, 1526-1533 (2000/April-0)
Radio properties of z>4 optically selected quasars.
STERN D., DJORGOVSKI S.G., PERLEY R.A., DE CARVALHO R.R. and WALL J.V.
Simbad objects: 42

2000AJ....119.2031K       []
Astron. J., 119, 2031-2037 (2000/May-0)
The X-ray properties of z>4 quasars.
KASPI S., BRANDT W.N. and SCHNEIDER D.P.
Simbad objects: 29

2000ApJ...533L..75S       []
Astrophys. J., 533, L75-L78 (2000/April-3)
Discovery of a color-selected quasar at z = 5.50.
STERN D., SPINRAD H., EISENHARDT P., BUNKER A.J., DAWSON S., STANFORD S.A. and ELSTON R.
Simbad objects: 7
dic: <[SSE2000] JHHMMSS+DDMMSS> N=1.

2000ApJ...545..625Y       []
Astrophys. J., 545, 625-634 (2000/December-3)
Evidence of thick obscuring matter revealed in the X-ray spectrum of the z=4.28 quasar RX J1028.6-0844.
YUAN W., MATSUOKA M., WANG T., UENO S., KUBO H. and MIHARA T.
Simbad objects: 6

2000ApJ...545.1015B       []
Astrophys. J., 545, 1015-1019 (2000/December-3)
X-rays from the nearby solitary millisecond pulsar PSR J0030+0451: the final ROSAT observations.
BECKER W., TRUMPER J., LOMMEN A.N. and BACKER D.C.
Simbad objects: 31
dic: Table 1: <[BTL2000] NN> (Nos 1-17).

2000MNRAS.315L..23B       [T K ]
Mon. Not. R. Astron. Soc., 315, L23-L28 (2000/June-3)
ROSAT PSPC detection of soft X-ray absorption in GB 1428+4217: the most distant matter yet probed with X-ray spectroscopy.
BOLLER T., FABIAN A.C., BRANDT W.N. and FREYBERG M.J.
Simbad objects: 2

2000PASP..112..434T       []
Publ. Astron. Soc. Pac., 112, 434-503 (2000/April-0)
Astrophysics in 1999. (Invited review).
TRIMBLE V. and ASCHWANDEN M.J.
Simbad objects: 248

1999A&A...344...51P       [ A O ]
Astronomy and Astrophysics, volume 344, 51-60 (1999/4-1)
VLBI imaging of extremely high redshift quasars at 5 GHz.
PARAGI Z., FREY S., GURVITS L.I., KELLERMANN K.I., SCHILIZZI R.T., McMAHON R.G., HOOK I.M. and PAULINY-TOTH I.I.K.
Simbad objects: 11

1999A&AS..135..273M       []
Astron. Astrophys., Suppl. Ser., 135, 273-289 (1999/March-1)
Gigahertz Peaked Spectrum sources from the Jodrell Bank-VLA Astrometric Survey I. Sources in the region 35{deg}<={delta}<=75{deg}.
MARECKI A., FALCKE H., NIEZGODA J., GARRINGTON S.T. and PATNAIK A.R.
<Available at CDS (J/A+AS/135/273): table2.dat table3.dat table4.dat>
Simbad objects: 161

1999MNRAS.308L...6F       [T K ]
Mon. Not. R. Astron. Soc., 308, L6-L10 (1999/September-1)
Variability of the extreme z=4.72 blasar, GB 1428+4217.
FABIAN A.C., CELOTTI A., POOLEY G., IWASAWA K., BRANDT W.N., McMAHON R.G. and HOENIG M.D.
Simbad objects: 5

1999PASP..111.1475S       []
Publ. Astron. Soc. Pac., 111, 1475-1502 (1999/December-0)
Search techniques for distant galaxies. (Invited review).
STERN D. and SPINRAD H.
Simbad objects: 54
dic: Fig.4: <[DSS98] 0140+326 BDNN> (No. BD12) added. Fig.8: <[SGP96] SSA 22 ANN> (No. C17) added.

1998AJ....115.1230S       []
Astron. J., 115, 1230-1233 (1998/April-0)
Discovery of an X-ray-selected quasar with a redshift of 4.45.
SCHNEIDER D.P., SCHMIDT M., HASINGER G., LEHMANN I., GUNN J.E., GIACCONI R., TRUMPER J. and ZAMORANI G.
Simbad objects: 4

1998MNRAS.294L...7H       []
Mon. Not. R. Astron. Soc., 294, L7-L12 (1998)
Discovery of radio-loud quasars with z = 4.72 and z = 4.01.
HOOK I.M. and McMAHON R.G.
Simbad objects: 10

1998MNRAS.295L..25F       [T ]
Mon. Not. R. Astron. Soc., 295, L25-L28 (1998)
The ASCA spectrum of the z=4.72 blazar GB 1428+4217.
FABIAN A.C., IWASAWA K., CELOTTI A., BRANDT W.N., McMAHON R.G. and HOOK I.M.
Simbad objects: 2

1997A&A...323..739B       []
Astronomy and Astrophysics, volume 323, 739-748 (1997/7-3)
Radio-loud AGN in the northern ROSAT All-Sky Survey. II. Multi-frequency properties of unidentified sources.
BRINKMANN W., SIEBERT J., FEIGELSON E.D., KOLLGAARD R.I., LAURENT-MUEHLEISEN S.A., REICH W., FUERST E., REICH P., VOGES W., TRUEMPER J., et al.
<Available at CDS (J/A+A/323/739): table1 table2 table3 table4 tables.tex>
Simbad objects: 1557
dic: Tables 1-2: <[BSF97] JHHMMSS.ss+DDMMSS.s>, Tables 3-4: <[BSF97] JHHMMSS.s+DDMMSS> N=1499

1997MNRAS.291L...5F       [T ]
Mon. Not. R. Astron. Soc., 291, L5-L7 (1997)
The extreme X-ray luminosity of the z = 4.72 radio-loud quasar GB 1428+4217.
FABIAN A.C., BRANDT W.N., McMAHON R.G. and HOOK I.M.
Simbad objects: 5

1992MNRAS.254..655P       []
Mon. Not. R. Astron. Soc., 254, 655 (1992)
Interferometer phase calibration sources - I. The region 35deg <= Dec. <= 75deg.
PATNAIK A.R., BROWNE I.W.A., WILKINSON P.N. and WROBEL J.M.
<CDS Catalogue: VIII/60>
Simbad objects: 846
dic: <JVAS HHMM+DDd> = <JVAS JHHMM+DDd> N=858

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Collections of Measurements


velocities : 9    PLX : 1    PM : 2   

   

Observing logs


ISO : 1    XMM : 2   

   


External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : 7C 1428+4218

Link by name to the catalogue in VizieR :

BWE 1428+4218 FIRST J143023.7+420436 IERS B1428+422 NVSS J143023+420436 1RXS J143023.7+420428
SDSS J143023.74+420436.5 SDSS J143023.74+420436.4 SDSS J143023.73+420436.5 WN B1428.4+4217 Gaia DR2 1491604311829975296
Gaia DR1 1491604311829975296

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