Mrk 520

Query : Mrk 520

Basic data :
Mrk 520 -- Seyfert 2 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:
G (2016A&A,Mrk,...), AGN ([VV2000c],[VV2003c],...), X (2MAXI,PBC,...), Rad (FIRST,NVSS,...), MIR (AKARI,WISEA,...), IR (IRAS,PSCz), Sy2 (2013ApJS), Sy1 (2013ApJS), IG (VV), * (Gaia), 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) :
22 00 41.3525526120 +10 33 08.035187868 (Optical) [ 0.5941 0.6142 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) :
21 58 13.7539770776 +10 18 41.206415055 [ 0.5941 0.6142 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) :
069.3924358739307 -34.0303217921519 [ 0.5941 0.6142 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 :
0.091 1.288 [0.704 0.719 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) 8128 [150] / z(emission) 0.02748904 [0.0005] / cz 8241.0069 [150]
   (Opt) C 2022ApJS..261....2K
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):
0.3455 [0.7024] A 2020yCat.1350....0G
Syntax of morphological type is : mtype quality bibcode
  • mtype : Hubble morphological class (spirals, ellipticals, etc)
  • quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality)
  • bibcode : bibcode of the morphological type reference
Morphological type:
Sa D ~
Syntax of angular size is : "maj-axis min-axis angle (wtype) quality bibcode"
  • maj-axis : major axis size (arc minutes)
  • min-axis : minor axis size (arc minutes)
  • angle : orientation angle (in degrees)
  • (wtype) : wavelength class for the origin of the angular size (Rad, mm, IR, Opt, UV, Xray, Gam)
  • quality : flag of quality of the angular size values ( A=best quality -> E=worst quality, {� } =unknown quality)
  • bibcode : bibcode of the angular size reference
Angular size (arcmin):
0.477 0.324 175 (NIR) C 2006AJ....131.1163S
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 (10) :
B 14.70 [~] D 2005A&A...436..443V
G 17.840731 [0.024954] C 2020yCat.1350....0G
J 11.720 [0.028] C 2006AJ....131.1163S
H 11.021 [0.039] C 2006AJ....131.1163S
K 10.713 [0.047] C 2006AJ....131.1163S
u (AB) 15.470 [0.007] C 2012ApJS..203...21A
g (AB) 14.303 [0.002] C 2012ApJS..203...21A
r (AB) 13.685 [0.002] C 2012ApJS..203...21A
i (AB) 13.312 [0.002] C 2012ApJS..203...21A
z (AB) 13.006 [0.003] C 2012ApJS..203...21A
SIMBAD within arcmin
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The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (38) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

Mrk 520 MCG+02-56-005 SWIFT J2200.7+1033 [HVG99b] 21582+1019
AKARI-IRC-V1 J2200413+103308 NPM1G +10.0534 TGSSADR J220041.3+103307 [VV2000c] J220041.4+103309
Anon 2158+10 NVSS J220041+103307 UGC 11871 [VV2003c] J220041.4+103309
FIRST J220041.3+103307 PBC J2200.7+1033 UZC J220041.4+103308 [VV2006c] J220041.4+103309
IRAS F21582+1018 PSCz Q21582+1018 VV 812 [VV2010c] J220041.4+103309
IRAS 21582+1018 RGB J2200+105 WISEA J220041.34+103308.0 [VV98c] J220041.4+103308
K73 940 RX J220045+10326 WISE J220041.35+103308.1 Gaia DR3 2726543134691492480
LEDA 67822 RX J2200.7+1032 Z 428-11 Gaia DR2 2726543134691073536
2MASX J22004138+1033079 SDSS J220041.33+103308.0 Z 2158.2+1019
2MAXI J2200+105 SWIFT J2200.9+1032 [CCA99] UGC 11871a

References (126 between 1850 and 2024) (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).
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                Reference summaries :

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Collections of Measurements


velocities : 11    distance : 2    PLX : 1    PM : 1   

   

Observing logs


herschel : 4    ISO : 2   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : Mrk 520

Link by name to the catalogue in VizieR :

AKARI-IRC-V1 J2200413+103308 FIRST J220041.3+103307 IRAS F21582+1018 IRAS 21582+1018 K73 940
2MASX J22004138+1033079 NPM1G +10.0534 NVSS J220041+103307 SDSS J220041.33+103308.0 UGC 11871
WISEA J220041.34+103308.0 WISE J220041.35+103308.1 Gaia DR3 2726543134691492480 Gaia DR2 2726543134691073536

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