NGC_2639

Query : NGC_2639
C.D.S. - SIMBAD4 rel 1.7 - 2018.11.14CET17:46:01

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


Basic data :
NGC 2639 -- 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:
Sy1 (), Rad (BWE,6C,...), G (Ref,LEDA,...), AGN ([HB91],[VV2000c],...), IR (IRAS,PSCz,...), X (1RXP,2XMM), GiG ([CHM2007]), LIN (Ref), gam (INTREF)
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] : coordinates error major axis, minor axis (in mas at defined epoch and convolved with error on propermotion),
    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 43 38.093 +50 12 19.94 (Infrared) [ ] C 2006AJ....131.1163S
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] : coordinates error major axis, minor axis (in mas at defined epoch and convolved with error on propermotion),
    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 40 03.138 +50 23 10.19 [ ]
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] : coordinates error major axis, minor axis (in mas at defined epoch and convolved with error on propermotion),
    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) :
168.873964 +38.185347 [ ]
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) 3202.3 [40.4] / z(~) 0.010739 [0.000135] / cz 3219.59 [40.40]
   (Opt) C 2015A&A...573A..59G
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:
SAa C 2015A&A...573A..59G
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) :
U 12.90 [0.14] D 2007ApJS..173..185G
B 12.56 [0.13] D 2007ApJS..173..185G
V 11.65 [0.13] D 2007ApJS..173..185G
J 9.388 [0.019] C 2006AJ....131.1163S
H 8.679 [0.021] C 2006AJ....131.1163S
K 8.397 [0.025] C 2006AJ....131.1163S
u (AB) 14.046 [0.003] C 2011yCat.2306....0A
g (AB) 12.199 [0.002] C 2011yCat.2306....0A
r (AB) 11.291 [0.001] C 2011yCat.2306....0A
i (AB) 10.922 [0.001] C 2011yCat.2306....0A
z (AB) 10.554 [0.002] C 2011yCat.2306....0A
SIMBAD with radius arcmin
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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:


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

: 2 : 3 Display criteria :

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

NGC 2639 IRAS 08400+5023 UGC 4544 [DML87] 621
BWE 0840+5024 LEDA 24506 UZC J084338.0+501220 [HB91] 0840+503
6C 084006+502406 2MASX J08433809+5012199 VLSS J0843.6+5012 [PVK2003] 130.90833 +50.20667
6C 084009+502417 MCG+08-16-024 WN B0840.0+5023 [VV2000c] J084338.0+501221
7C 084003.20+502257.00 NVSS J084338+501220 2XMM J084338.0+501218 [VV2003c] J084338.0+501221
FIRST J084338.0+501220 PSCz Q08400+5023 Z 0840.0+5022 [VV2006c] J084338.0+501221
GB6 B0840+5023 1RXP J084338.0+501207 Z 237-14 [VV2010c] J084338.0+501221
87GB 084007.0+502415 SDSS J084338.06+501219.9 [A97b] J084337.9+501209 [VV98c] J084338.0+501221
INTREF 364 SDSS J084338.07+501220.2 [CAB95] IRAS F08400+5023
IRAS F08400+5023 TXS 0840+503 [CHM2007] LDC 588 J084338.09+5012199

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References (363 between 1850 and 2019) (Total 363)
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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                 or select by : (not exhaustive, explanation here)

Collections of Measurements


distance : 4    velocities : 11   

   

Observing logs


IUE : 2   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : NGC_2639

Link by name to the catalogue in VizieR :

NGC 2639 BWE 0840+5024 FIRST J084338.0+501220 IRAS F08400+5023 IRAS 08400+5023
2MASX J08433809+5012199 NVSS J084338+501220 SDSS J084338.06+501219.9 SDSS J084338.07+501220.2 UGC 4544
WN B0840.0+5023 [DML87] 621

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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 .
The list of all annotations to SIMBAD objects can be found here .

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2018.11.14-17:46:01

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