NGC 3081

Query : NGC 3081

Basic data :
NGC 3081 -- 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:
Sy1 (), G (2016A&A,AM,...), AGN ([HB91],[VV2000c],...), X (1AXG,2E,...), Sy2 (2008ApJ), GiG ([CHM2007]), AG? (2020MNRAS), * (Gaia), gam (INTREF), HI (HIPASS), Rad (NVSS), MIR (WISE)
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) :
09 59 29.5437024336 -22 49 34.747341960 (Optical) [ 0.3613 0.3291 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) :
09 57 09.9561524493 -22 35 10.354799710 [ 0.3613 0.3291 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) :
259.0172381736243 +25.0342684656765 [ 0.3613 0.3291 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 :
0.269 -0.624 [0.422 0.420 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) 2410 [150] / z(emission) 0.00807122 [0.0005] / cz 2419.6909 [150]
   (Opt) C 2022ApJS..261....2K
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:
-1.0 D 1989ESOLV.C......0L
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):
1.330 0.904 70 (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 (8) :
B 13.06 [~] C 1989ESOLV.C......0L
V 13.55 [~] D 2010A&A...518A..10V
R 11.67 [~] C 1989ESOLV.C......0L
G 18.059610 [0.007544] C 2020yCat.1350....0G
I 12.1 [~] D 2005MNRAS.361...34D
J 9.913 [0.016] C 2006AJ....131.1163S
H 9.205 [0.019] C 2006AJ....131.1163S
K 8.910 [0.028] C 2006AJ....131.1163S
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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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 1 : 4 Display criteria :

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (33) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

NGC 3081 IC 2529 SGC 095710-2235.1 [VV2003c] J095929.6-224934
AM 0957-223 INTREF 401 SWIFT J0959.5-2248 [VV2006c] J095929.6-224934
1AXG J095929-2250 LEDA 28876 SWIFT J0959.4-2250 [VV2010c] J095929.6-224934
6dFGS gJ095929.5-224935 2MASX J09592953-2249343 SWIFT J0959.6-2250 [VV98c] J095929.6-224934
2E 2210 MCG-04-24-012 WISE J095929.54-224934.7 Gaia DR2 5660737587274519040
2E 0957.1-2235 NPM1G -22.0176 [CHM2007] LDC 673 J095929.53-2249343 Gaia DR3 5660737587274519040
ESO 499-31 NVSS J095929-224929 [HB91] 0957-225
ESO-LV 499-0310 PBC J0959.4-2249 [KRL2007b] 82
HIPASS J0959-22 1RXS J095930.3-224954 [VV2000c] J095929.6-224934

References (466 between 1850 and 2024) (Total 466)
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 : 4    PM : 1   

   

Observing logs


herschel : 6    IUE : 4   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : NGC 3081

Link by name to the catalogue in VizieR :

NGC 3081 2E 2210 ESO-LV 499-0310 HIPASS J0959-22 2MASX J09592953-2249343
NPM1G -22.0176 NVSS J095929-224929 1RXS J095930.3-224954 WISE J095929.54-224934.7 Gaia DR2 5660737587274519040
Gaia DR3 5660737587274519040

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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