(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
(2020A&A,7C,...),
QSO
(2010A&A,KODIAQ,...),
X
(2009A&A,RX,...),
Bla
(2009A&A,[DGT2001],...),
AGN
(2016A&A),
*
(Gaia),
gam
(INTREF),
Opt
(SDSS)
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)
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)
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)
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)
References (63 between 1850 and 2009) (Total 144)
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
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>
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>
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.
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.
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.
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.
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.
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.
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.
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.
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.
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>
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>
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.
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.
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>
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.
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.
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.
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>
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.
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>
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.
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.
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.
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>
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.
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.
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>
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>
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.
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>
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.
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.
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.
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.
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.
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.
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>
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>
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.
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.
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.
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.
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>
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.
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.
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.
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.
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>
Annotations :
Annotations allow a user to add a note or report an error concerning the astronomical object and its data. It requires registration to post a note. See description . Please, have a look at Best practices. The list of all annotations to SIMBAD objects can be found here .