CDS

NGC4156

Query : NGC4156
C.D.S. - SIMBAD4 rel 1.7 - 2021.03.09CET11:37:22

Available data : Basic data  •  Identifiers  •  Plot & images  •  Bibliography  •  Measurements  •  External archives  •  Notes  •  Annotations

Basic data :
NGC 4156 -- LINER-type Active Galaxy Nucleus
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: 		EmG (), G (2012A&A,ECO,...), AGN (2010A&A,[VV2000c],...), X (1E,2E,...), Rad (FIRST,NVSS,...), GiP (KPG,[T76]), LIN (2014ApJ), GrG ([H37]), * (Gaia), GiG ([CHM2007]), rG (2018AJ), Q? (FBQS), HI (2016A&A), IR (ISOSS)
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) : 		12 10 49.6111682118 +39 28 22.082749602 (Optical) [ 1.2613 0.8741 90 ] C 2018yCat.1345....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) : 		12 08 18.1629418863 +39 45 03.225200685 [ 1.2613 0.8741 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) : 		154.7502725350052 +75.0434915009197 [ 1.2613 0.8741 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) 6705 [3] / z(spectroscopic) 0.02262 [0.00001] / cz 6781.3 [3.0]
   (Opt) C 2012ApJS..203...21A
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_B 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): 		0.793 0.603 100 (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 (11) :
B 15.01 [~] D 2010A&A...518A..10V
V 14.32 [~] D 2010A&A...518A..10V
G 17.0681 [0.0150] C 2018yCat.1345....0G
J 11.004 [0.026] C 2006AJ....131.1163S
H 10.351 [0.034] C 2006AJ....131.1163S
K 10.064 [0.041] C 2006AJ....131.1163S
u (AB) 15.431 [0.007] C 2012ApJS..203...21A
g (AB) 13.912 [0.002] C 2009yCat.2294....0A
r (AB) 13.003 [0.002] C 2009yCat.2294....0A
i (AB) 12.598 [0.002] C 2009yCat.2294....0A
z (AB) 12.360 [0.002] C 2009yCat.2294....0A
SIMBAD with radius arcmin
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VizieR photometry viewer    sed-help-icon
within radius 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!).
Some important notes on this object about identifications and objects associations.
notes:

  • [T76] 57B ?

Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 3
The count displayed here is the number of children objects.
The list obtained by clicking the button may be larger, as some children may be linked with different references or probability.

%This number is the number of distinct objets linked, by using this button, you will obtain all links (may be more than one) from that object to his children

: 1 		: 6 Display criteria :

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (35) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

NGC 4156 KPG 325a 2XMM J121049.5+392822 [SMM2006b] J121049.61+392822.2
1E 1208.3+3945 KPG 325 3XMM J121049.5+392822 [T76] 57B
1E 1208.2+3945 LEDA 38773 Z 215-47 [VV2000c] J121049.7+392822
2E 2606 2MASX J12104958+3928223 Z 1208.3+3945 [VV2003c] J121049.7+392822
2E 1208.3+3945 MCG+07-25-045 [CHM2007] LDC 869 J121049.58+3928223 [VV2006c] J121049.7+392822
ECO 3410 NVSS J121049+392823 [GCP2006] A140 [VV2010c] J121049.7+392822
FBQS J1210+3928 SDSS J121049.60+392822.1 [H37] 345 [VV98c] J121049.7+392822
FIRST J121049.6+392822 UGC 7173 [LB2005] NGC 4156 X1 Gaia DR2 1535810559076616192
ISOSS J12107+3928 UZC J121049.5+392823 [SLK2004] 663

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References (100 between 1850 and 2021) (Total 100)
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


distance : 1    velocities : 9   

   

Observing logs


IUE : 1   

   

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : NGC4156

Link by name to the catalogue in VizieR :

NGC 4156 2E 2606 FIRST J121049.6+392822 KPG 325a KPG 325
2MASX J12104958+3928223 NVSS J121049+392823 SDSS J121049.60+392822.1 UGC 7173 Gaia DR2 1535810559076616192

Search by coordinates in Vizier (radius: 5 arcsec)

Annotations :
Annotations allow a user to add a note or report an error concerning the astronomical object and its data. It requires registration to post a note. See description .
Please, have a look at Best practices. The list of all annotations to SIMBAD objects can be found here .

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2021.03.09-11:37:22

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