NGC 833

Query : NGC 833

Basic data :
NGC 833 -- 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 (2012ApJS,6dFGS,...), AGN ([VV2000c],[VV2003c],...), ** (**,CCDM,...), Sy2 (2011ApJ), GiG (dCAZ94,HCG,...), * (GSC,TYC,...), X (CXO,SWIFT,...), LIN (2013ApJ), EmG (SINGG), AG? (2020MNRAS), Rad (FIRST), 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) :
02 09 20.8490871072 -10 07 59.003785884 (Optical) [ 5.1908 3.9649 90 ] C 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) :
02 06 53.5067937435 -10 22 08.780847527 [ 5.1908 3.9649 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) :
173.8471156374850 -64.9843700224677 [ 5.1908 3.9649 90 ]
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) 4034 [150] / z(emission) 0.01354800 [0.0005] / cz 4061.5882 [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:
SAB_a C 2019MNRAS.488..590B
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):
1.037 0.518 85 (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 (12) :
B 14.02 [~] D 2010A&A...518A..10V
V 13.00 [~] D 2010A&A...518A..10V
R 12.75 [~] E 1989ApJS...70..687H
G 19.353521 [0.043575] C 2020yCat.1350....0G
J 10.429 [0.016] C 2006AJ....131.1163S
H 9.772 [0.020] C 2006AJ....131.1163S
K 9.473 [0.026] C 2006AJ....131.1163S
u (AB) 15.642 [0.007] C 2009ApJS..182..543A
g (AB) 13.586 [0.002] C 2009ApJS..182..543A
r (AB) 12.628 [0.002] C 2009ApJS..182..543A
i (AB) 12.161 [0.002] C 2009ApJS..182..543A
z (AB) 11.795 [0.002] C 2009ApJS..182..543A
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 ) :

: 4 : 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 833 HCG 16b SWIFT J0209.5-1010B [VV2000c] J020920.9-100759
** HJ 2116C IDS 02046-1039 C SWIFT J0209.5-1010 [VV2003c] J020920.9-100759
CCDM J02095-1009C LEDA 8225 TYC 5281-1672-1 [VV2006c] J020920.9-100759
CXO J020920.8-100759 2MASX J02092086-1007591 WDS J02094-1011C [VV2010c] J020920.9-100759
dCAZ94 HCG 16-02b MCG-02-06-030 [CHM2007] HDC 121 J020920.86-1007591 [VV98c] J020920.9-100759
dCAZ94 HCG 16-02 SDSS J020920.84-100759.1 [CHM2007] LDC 146 J020920.86-1007591 Gaia DR3 2461886219119643264
6dFGS gJ020920.9-100759 SDSS J020920.85-100759.1 [GMM2009b] NYU-VAGC 239043
FIRST J020920.8-100759 SINGG HIPASS J0209-10 S4 [KPC2006] NGC 835 Neighbor 1
GSC 05281-01672 SWIFT J0209.5-1010A [OZV2014] 14

References (191 between 1850 and 2024) (Total 191)
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 : 18    distance : 4   

   

Observing logs


herschel : 3   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : NGC 833

Link by name to the catalogue in VizieR :

NGC 833 CCDM J02095-1009C FIRST J020920.8-100759 GSC 05281-01672 2MASX J02092086-1007591
SDSS J020920.84-100759.1 SDSS J020920.85-100759.1 TYC 5281-1672-1 WDS J02094-1011C Gaia DR3 2461886219119643264

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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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