3C 334

Query : 3C 334

Basic data :
2E 3648 -- Seyfert 1 Galaxy
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:
Sy1 (), Rad (2019ApJS,3C,...), QSO (2015MNRAS,QSO,...), IR (2MASS,2MASSI,...), X (2E,REX,...), G (LEDA,[MJ2006]), BH? ([KB2007]), * (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) :
16 20 21.8184966430 +17 36 23.952696503 (Optical) [ 0.0439 0.0318 90 ] A 2018yCat.1345....0G
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) :
16 18 07.2965227161 +17 43 30.450866372 [ 0.0439 0.0318 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) :
033.1607187657684 +41.1083991025876 [ 0.0439 0.0318 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 :
0.050 -0.008 [0.088 0.072 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) 124401 [15] / z(spectroscopic) 0.55517 [0.00005] / cz 166435.8 [15.0]
   (Opt) C 2012ApJS..203...21A
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 (12) :
B 16.53 [~] D 2010A&A...518A..10V
V 16.41 [~] D 2010A&A...518A..10V
R 20.5 [~] D 2006MNRAS.367.1261M
G 16.5182 [0.0021] C 2018yCat.1345....0G
J 15.552 [0.062] C 2010AJ....139.2360S
H 14.919 [0.076] C 2010AJ....139.2360S
K 14.088 [0.050] C 2010AJ....139.2360S
u (AB) 17.086 [0.008] B 2012ApJS..203...21A
g (AB) 16.753 [0.004] B 2009ApJS..182..543A
r (AB) 16.901 [0.005] B 2009ApJS..182..543A
i (AB) 16.754 [0.005] B 2009ApJS..182..543A
z (AB) 16.824 [0.011] C 2012ApJS..203...21A
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 (57) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

3C 334 MITG J162021+1736 RGB J1620.4+1736 [KB2007] J162021.8+173624.0
BWE 1618+1743 MITG J162022+1735 RGB J1620+176 [MJ2006] J162021.9+173616.9
3C 334.0 MRC 1618+177 RX J1620.3+1736 [S77] 328
4C 17.68 NRAO 500 1RXS J162022.5+173616 [VV2000] J162021.8+173623
3CR 334 NVSS J162021+173629 S3 1618+17 [VV2003] J162021.8+173623
Cul 1618+177 OHIO S 131 SDSS J162021.81+173623.9 [VV2006] J162021.8+173623
2E 3648 PKS J1620+1736 TIC 149684885 [VV2010] J162021.8+173624
2E 1618.1+1743 PKS 1618+177 TXS 1618+177 [VV96] J162021.8+173623
GB6 B1618+1743 PKS 1618+17 VRO 17.16.02 [VV98] J162021.8+173623
87GB 161808.3+174347 QSO B1618+1743 WB 1618+1743 [WTW94] 1618+177
IVS B1618+177 QSO B1618+177 WISEA J162021.81+173623.9 [ZEH2003] RX J1620.3+1736 1
LEDA 2817681 QSO B1618+174 WISE J162021.82+173623.9 Gaia DR2 1200259229691356672
2MASS J16202181+1736239 QSO B1618+17 [BDW2002] q1618+1743
2MASSI J1620218+173624 QSO J1620+1736 [GW2008] CoNFIG 247
MC3 1618+17.7 REX J1620.3+1736 [HB93] 1618+177

References (396 between 1850 and 2021) (Total 396)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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                Reference summaries :

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Collections of Measurements


velocities : 10    PM : 1   

   

Observing logs


herschel : 3    ISO : 2   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : 3C 334

Link by name to the catalogue in VizieR :

3C 334 BWE 1618+1743 3C 334.0 4C 17.68 3CR 334
2E 3648 2MASS J16202181+1736239 2MASSI J1620218+173624 MITG J162021+1736 MITG J162022+1735
NVSS J162021+173629 PKS J1620+1736 PKS 1618+177 PKS 1618+17 1RXS J162022.5+173616
SDSS J162021.81+173623.9 WISEA J162021.81+173623.9 WISE J162021.82+173623.9 Gaia DR2 1200259229691356672

Search by coordinates in Vizier (radius: 5 arcsec)


Annotations :
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Please, have a look at Best practices. The list of all annotations to SIMBAD objects can be found here .

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2021.08.03-16:14:05

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