3C 205

Query : 3C 205

Basic data :
3C 205 -- 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: 		Rad (2014ApJS,7C,...), QSO (2018A&A,QSO,...), X (2016A&A,2E,...), MIR (WISEA,WISE), Sy1 (2012ApJ), AGN (2016A&A), G (LEDA), * (Gaia), NIR (2MASS), 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)
  • 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) : 		08 39 06.5324936736 +57 54 17.069000688 (Optical) [ 0.0552 0.0443 90 ] A 2020yCat.1350....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) : 		08 35 10.0678370090 +58 04 51.501798077 [ 0.0552 0.0443 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) : 		159.2600923441875 +36.8964028588937 [ 0.0552 0.0443 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 : 		0.103 0.074 [0.056 0.051 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) 218997 [767] / z(spectroscopic) 1.53397 [0.00256] / cz 459872.6 [767.5]
   C 2009ApJS..182..543A
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): 		0.1799 [0.0787] A 2020yCat.1350....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 (11) :
B 18.10 [~] D 2010A&A...518A..10V
V 17.62 [~] D 2010A&A...518A..10V
G 17.221455 [0.003046] C 2020yCat.1350....0G
J 15.527 [0.063] C 2003yCat.2246....0C
H 14.775 [0.069] C 2003yCat.2246....0C
K 14.538 [0.072] C 2003yCat.2246....0C
u (AB) 18.2911 [0.0260] C 2020ApJS..250....8L
g (AB) 17.6833 [0.0242] C 2020ApJS..250....8L
r (AB) 17.1978 [0.0133] C 2020ApJS..250....8L
i (AB) 16.8059 [0.0298] C 2020ApJS..250....8L
z (AB) 16.7075 [0.0276] C 2020ApJS..250....8L
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!). sed-help-icon
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 (54) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

7C 083510.09+580449.00 87GB 083511.0+580458 S4 0835+580 2XMMi J083906.7+575417
BWE 0835+5804 GRA B0835+58 SDSS J083906.53+575417.0 [GW2008] CoNFIG 28
3C 205.0 LEDA 2817593 SDSS J083906.52+575417.0 [HB93] 0835+580
3C 205 2MASS J08390652+5754171 TGSSADR J083906.4+575413 [S77] 117
4C 58.16 MY 083510.4+575417.1 TIC 445038465 [VV2000] J083906.5+575418
6C 083510+580449 MY 083510.4+580451.6 TXS 0835+580 [VV2003] J083906.5+575418
8C 0835+580 NRAO 298 UT 0835+580 [VV2006] J083906.5+575418
3CR 205 NVSS J083906+575413 VLSSr J083906.1+575413 [VV2010] J083906.6+575417
DA 254 OHIO J 558 VLSS J0839.1+5754 [VV96] J083906.5+575418
DB 59 QSO J0839+5754 WB 0835+5804 [VV98] J083906.5+575418
2E 0835.1+5804 QSO B0835+580 WISEA J083906.52+575417.1 [WTW94] 0835+580
2E 2019 QSO B0835+5804 WISE J083906.52+575417.1 Gaia DR3 1034413671760559232
FIRST J083906.3+575408 1RXS J083905.6+575418 WN B0835.1+5804
GB6 B0835+5804 S4 0835+58 3XMM J083906.8+575417

References (263 between 1850 and 2024) (Total 263)
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 : 7    PLX : 1    PM : 1   

   

Observing logs


herschel : 3   

   

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : 3C 205

Link by name to the catalogue in VizieR :

BWE 0835+5804 3C 205.0 3C 205 4C 58.16 3CR 205
2E 2019 FIRST J083906.3+575408 2MASS J08390652+5754171 NVSS J083906+575413 1RXS J083905.6+575418
SDSS J083906.53+575417.0 SDSS J083906.52+575417.0 WISEA J083906.52+575417.1 WISE J083906.52+575417.1 WN B0835.1+5804
Gaia DR3 1034413671760559232

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