CDS

NGC 7720

C.D.S. - SIMBAD4 rel 1.7 - 2021.04.10CEST22:12:42

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

Basic data :
NGC 7720 -- 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: 		Rad (ASB,B2,...), GiC (GIN,NFP,...), G (2015ApJS,LEDA,...), QSO ([VV2000],[VV2003],...), rG ([MO2001b],[OLK95],...), X (RX,2XMM,...), BiC (2008MNRAS,[CAC2009]), AGN ([HB91],[VV2010c]), IG (VV), GiG ([CHM2007]), GiP (KPG), Sy1 (2012ApJ)
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) : 		23 38 29.38322439 +27 01 53.2583763 (Radio) [ 0.5325 0.5050 90 ] A 2015AJ....150...58F
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
FK5 coord. (ep=J2000 eq=2000) : 		23 38 29.38539596 +27 01 53.2693012 [ 0.5325 0.5050 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
FK4 coord. (ep=B1950 eq=1950) : 		23 35 58.97772058 +26 45 16.0694329 [ 0.5325 0.5050 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) : 		103.50157659999 -33.07300739822 [ 0.5325 0.5050 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) 8962 [44] / z(~) 0.03035 [0.00015] / cz 9100.0 [44.0]
   (Opt) C 2004AJ....128.1558S
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: 		E+cG 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): 		1.027 0.698 25 (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 13.9 [~] D 1999PASP..111..438F
V 13.3 [~] E ~
J 10.285 [0.020] C 2006AJ....131.1163S
H 9.573 [0.026] C 2006AJ....131.1163S
K 9.275 [0.031] C 2006AJ....131.1163S
u (AB) 15.781 [0.011] C 2015ApJS..219...12A
g (AB) 13.730 [0.002] B 2015ApJS..219...12A
r (AB) 12.804 [0.002] B 2015ApJS..219...12A
i (AB) 12.318 [0.002] B 2015ApJS..219...12A
z (AB) 11.961 [0.002] B 2015ApJS..219...12A
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:

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

: 9 : 109 Display criteria :

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (80) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

NGC 7720 1Jy 2335+267 WB 2335+2644 [MO2001b] J233829.5+270155.1
ASB 78 KPG 588a 2XMM J233829.3+270153 [OLK95] 2335+267
B2 2335+26 LEDA 71985 Z 2336.0+2645 [OWH82] 233555.4+264402
2C 1906 LHE 542 Z 476-91 [PCD91] 233559.00+264515.0
3C 465 MAPS-PP O-843-46905 [BO85] ACO 2634 1 [PCD91] 2335+267 1
3C 465.0 2MASX J23382938+2701526 [BS88] ACO 2634 1 [PL95] J233829.44+270149.7
4C 26.64 MCG+04-55-036 [BTM97] ACO 2634 1 [PRB93] 201
3CR 465 MITG J233827+2701 [CAC2009] A2634 a [SM98] 1
CTA 106 NFP J233829.4+270154 [CCA99] UGC 12716a [SRT77] ACO 2634 6
CTD 143 NRAO 715 [CHM2007] LDC 1590 J233829.38+2701526 [VV2000] J233829.4+270152
Cul 2335+26 PKS 2335+26 [CHM2007] HDC 1248 J233829.38+2701526 [VV2003] J233829.4+270152
Cul 2335+267 PKS J2335+2701 [D80] ACO 2634 77 [VV2006] J233829.4+270152
DA 604 PKS 2335+267 [FWB89] Galaxy 468 [VV2010c] J233829.4+270152
DB 124 RX J233829.1+270153 [HB91] 2335+267 [VV96] J233829.4+270152
GB6 B2335+2644 S1 2335+26 [L84] A2634-G1 [VV98] J233829.4+270152
87GB 233557.7+264453 SDSS J233829.38+270153.2 [LGC91] ACO 2634 1221 [WCB96] ACO 2634 A
GIN 716 UGC 12716 [LO95] 2335+267 [YZC2001] 86
ICRF J233829.3+270153 UZC J233829.4+270151 [LPS2014] 354.6227+27.0305 [YZC2001] 87
JVAS J2338+2701 VRO 26.23.02 [LVL2003] J233829.40+270153.2 [ZBO89] ACO 2634-1
1Jy 2335+26 VV 1991 [MO2001b] J233829+270155 [ZEH2003] RX J2338.4+2700 8

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References (37 between 2016 and 2021) (Total 517)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
Follow new references on this object
                Reference summaries :

                from: to:

                 or select by : (not exhaustive, explanation here)

Collections of Measurements


velocities : 21    distance : 4   

   

Warning : measurements from IRAS, IRC, SAO, CL.g (ACO), GJ have been removed
(they are still available using the icon Vizier near the identifier of the catalogue, or at the bottom of the page in the section "External links" to get the full data)

velocities (21) 

 |typ|    Value    R   m.e.   |A (Nmes)|na,Q,dom ,   res    D| Obs.date | Rem.  |Or|     Reference     |
 -------------------------------------------------------------------------------------------------------
 |v  | 9030                   |  (    )|s ,D,    ,           |          |       |  |2016AJ....152...50T|

distance (4) 

 | distance Q unit|  err-        err+     | method |     reference     |
 -----------------------------------------------------------------------
 |  124.17    Mpc |                       |        |2016AJ....152...50T|
Observing logs


ISO : 2    XMM : 1   

   

Warning : measurements from IRAS, IRC, SAO, CL.g (ACO), GJ have been removed
(they are still available using the icon Vizier near the identifier of the catalogue, or at the bottom of the page in the section "External links" to get the full data)

iso (2)

The 2 columns in color are computed by VizieR, and are not part of the original data.
Note: Quick-look images of the data, and specific documentation, are accessible by clicking on the TDT observation identifier
VI/111/isolog
Post annotation 		ISO Observation Log (ISO Data Centre, 2004) [ReadMe+ftp]

*The ISO Observation Log[image] (36737 rows) (Note)		img(gal)
start AladinLite 
 Full      _r        TDT    AOT    minLam  maxLam  Target                                 oStart         oLen    recno   FOV                  RAJ2000   DEJ2000 cal  ObsID    abs  PropID  
        arcmin                      um      um                                             s             s                                     deg       deg                              


    1     0.003  39501112  CAM01    3.98   17.05  3C 465                          1996-12-15T14:25:31   1578     16663  102"x102"           354.6224  +27.0315      MBIRKINS +    PROP_001
    2     0.007  56500458  CAM01    5.05   15.45  3C465.0                         1997-06-03T02:18:41    894     23917  144"x144"           354.6223  +27.0315      GMILEY   +    DUST3CR

xmm (1)

The 3 columns in color are computed by VizieR, and are not part of the original data.
B/xmm/xmmlog
Post annotation 		XMM-Newton Observation Log (XMM-Newton Science Operation Center, 2012) [ReadMe+ftp]
2002yCat....102009X

The XMM-Newton Observation log (2021-04-06)[image/fits] (15411 rows)		img(gal)
start AladinLite 
 Full      _r        Obsno     PropDate   Object                           RAJ2000    DEJ2000           Obs0          ObsDur Image  PPSp   FITS XSAlink
        arcmin                    s                                         deg        deg              s              s                             


    1    0.0856  0002960101  2003-08-05  3C465                           354.62083  +27.03142  2002-06-22T05:08:28    11545 FITS       PPSp  0002960101 Y

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : NGC 7720

Link by name to the catalogue in VizieR :

NGC 7720 3C 465 3C 465.0 4C 26.64 3CR 465
KPG 588a 2MASX J23382938+2701526 MITG J233827+2701 PKS 2335+26 PKS J2335+2701
PKS 2335+267 SDSS J233829.38+270153.2 UGC 12716

Search by coordinates in Vizier (radius: 30 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 .

Currently no annotations available

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report an error concerning the data of this object

2021.04.10-22:12:43

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