QSO B0434-188

Query : QSO B0434-188

Basic data :
QSO B0434-188 -- 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 (2020A&A,GLEAM,...), QSO (2010A&A,QSO,...), Bla (2009A&A,[MGL2009],...), AGN (2020MNRAS,CGRaBS), MIR (WISEA,WISE), * (Gaia), cm (AT20G)
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) :
04 37 01.48273617 -18 44 48.6135530 (Radio) [ 0.0396804 0.0614 0 ] A 2020A&A...644A.159C
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) :
04 34 48.97283544 -18 50 48.2137496 [ 0.0396804 0.0614 0 ]
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) :
216.34654264911 -37.80462669710 [ 0.0396804 0.0614 0 ]
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 :
-0.047 -0.099 [0.158 0.166 90] A 2020yCat.1350....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) 258977 [~] / z(spectroscopic) 2.70 [~] / cz 809440 [~]
   (Opt) D 2017ApJS..233....3T
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):
0.0102 [0.2343] 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 (4) :
B 19.11 [~] D 2008MNRAS.384..775M
V 19.0 [~] E ~
R 19.62 [~] D 2008ApJS..175...97H
G 19.028147 [0.003834] C 2020yCat.1350....0G
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 (36) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

QSO B0434-188 NVSS J043701-184448 WISEA J043701.47-184448.5 [VV2006] J043701.4-184448
AT20G J043701.5-184448 PKS J0437-1844 WISE J043701.47-184448.5 [VV2010] J043701.4-184448
AT20G J043701-184448 PKS 0434-188 WISH B0434.8-1850 [VV96] J043701.4-184448
CGRaBS J0437-1844 PMN J0437-1844 [MEM2008] 56 [VV98] J043701.4-184448
GLEAM J043701-184446 RORF 0434-188 [MGL2009] BZQ J0437-1844 [WPW2003] J0437-1844
ICRF J043701.4-184448 SPASS J043702-184436 [MML2015] 5BZQ J0437-1844 EQ 0434-18
IERS B0434-188 TGSSADR J043701.4-184448 [P82] 0434-188 Gaia DR3 2978490687982690688
IVS B0434-188 VCS1 J0437-1844 [VV2000] J043701.4-184448 Gaia DR1 2978490687982690688
1Jy 0434-188 VSOP J0437-1844 [VV2003] J043701.4-184448 Gaia DR2 2978490687982690688

References (105 between 1850 and 2024) (Total 105)
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 : 5    PLX : 1    PM : 3   

   


External archives :

Data at NED - NASA/IPAC Extragalactic Database : QSO B0434-188

Link by name to the catalogue in VizieR :

IERS B0434-188 NVSS J043701-184448 PKS J0437-1844 PKS 0434-188 PMN J0437-1844
VSOP J0437-1844 WISEA J043701.47-184448.5 WISE J043701.47-184448.5 WISH B0434.8-1850 Gaia DR3 2978490687982690688
Gaia DR1 2978490687982690688 Gaia DR2 2978490687982690688

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