NGC 4531

Query : NGC 4531

Basic data :
NGC 4531 -- Galaxy towards a Group of Galaxies
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 (2014ApJS,EVCC,...), * (TYC,Gaia), IR (IRAS,ISOSS), GiC (VPC), GiG ([CHM2007]), AG? (2020MNRAS), 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) : 		12 34 15.8672289240 +13 04 31.092418884 (Optical) [ 0.5153 0.4333 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
FK5 coord. (ep=J2000 eq=2000) : 		12 34 15.8684299185 +13 04 31.086384515 [ 0.5153 0.4333 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) : 		12 31 44.3586884773 +13 21 02.829849380 [ 0.5153 0.4333 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) : 		286.1346652615497 +75.3840629729403 [ 0.5153 0.4333 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 : 		0.509 0.756 [0.814 0.699 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) 93 [21] / z(spectroscopic) 0.00031 [0.00007] / cz 92.9 [21.0]
   E 2009ApJS..182..543A
Syntax of parallax is : 'value quality [error] bibcode'
  • value : parallax value
  • quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality)
  • [error] : mean error
  • bibcode : bibcode of the parallax reference
Parallaxes (mas): 		0.4463 [0.6561] A 2020yCat.1350....0G
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 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): 		1.783 1.177 155 (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 12.42 [0.15] D 2007ApJS..173..185G
G 19.088667 [0.008427] C 2020yCat.1350....0G
J 9.592 [0.016] C 2006AJ....131.1163S
H 8.994 [0.023] C 2006AJ....131.1163S
K 8.759 [0.027] C 2006AJ....131.1163S
u (AB) 14.507 [0.006] C 2009ApJS..182..543A
g (AB) 12.786 [0.002] C 2009ApJS..182..543A
r (AB) 11.998 [0.002] C 2009ApJS..182..543A
i (AB) 11.566 [0.002] C 2009ApJS..182..543A
z (AB) 11.371 [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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sedIcon
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!). sed-help-icon
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 ) :

: 7 : 6440 Display criteria :

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (24) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

NGC 4531 2MASX J12341584+1304318 UZC J123415.9+130431 [CHM2007] LDC 904 J123415.84+1304318
EVCC 889 MCG+02-32-141 VCC 1552 [M98c] 123144.6+132106
IRAS F12317+1321 PCCS1 857 G286.15+75.39 VPC 948 [SLK2004] 718
IRAS 12317+1321 SDSS J123415.88+130431.1 Z 70-175 [YOF95] 189
ISOSS J12342+1304 TYC 880-751-1 Z 1231.8+1321 Gaia DR2 3931777237884009728
LEDA 41806 UGC 7729 [CHM2007] HDC 720 J123415.84+1304318 Gaia DR3 3931777237884009728

References (14 between 2019 and 2024) (Total 146)
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 : 9    distance : 8    PLX : 1    PM : 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)

velocities (9) 

 |typ|    Value    R   m.e.  |A (Nmes)|na,Q,dom ,   res    D| Obs.date | Rem.  |Or|     Reference     |
 ------------------------------------------------------------------------------------------------------
 |v  |  119                  |  (    )|s ,D,    ,           |          |       |  |2016AJ....152...50T|

distance (8) 

 | distance Q unit|  err-        err+     | method |     reference     |
 -----------------------------------------------------------------------
 |   15.0661  Mpc |                       |redshift|2019A&A...631A..38L|

plx (1) 

 |    plx    :    m.e     R |     reference     |
 ------------------------------------------------
 |   0.4463  :   0.6561     |2020yCat.1350....0G|

pm (1) 

 |  pm-ra  [   m.e   ]|  pm-de  [   m.e   ]|syst|     reference     |
 --------------------------------------------------------------------
 |   +0.509[    0.814]|   +0.756[    0.699]|ICRS|2020yCat.1350....0G|
Observing logs


ISO : 7   

   

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 (7)

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     0.036  22600675  CAM01   11.55   17.05  vcc 1552                        1996-06-30T01:17:46    622      8973  480"x480"           188.5660  +13.0759      JLEQUEUX +    VIRGO1  
    2     0.036  22600876  PHT32  146.42  202.26  VCC1552                         1996-06-30T03:21:20    270      8976  549"x181"           188.5660  +13.0759      HVOELK   +    VIRGO2  
    3     0.036  22601053  PHT32   54.76  118.38  VCC1552                         1996-06-30T06:32:08    774      8989  315"x135"           188.5660  +13.0759      HVOELK   +    VIRGO2  
    4     0.036  22601054  PHT32  146.42  202.26  VCC1552                         1996-06-30T06:45:56    272      8990  549"x181"           188.5660  +13.0759      HVOELK   +    VIRGO2  
    5     0.036  22601467  CAM01    5.05    8.35  vcc 1552                        1996-06-30T10:04:34    620      9008  480"x480"           188.5660  +13.0759      JLEQUEUX +    VIRGO1  
    6     0.049  19900553  PHT32   54.76  118.38  VCC1552                         1996-06-03T07:58:48    774      7795  315"x135"           188.5659  +13.0761      HVOELK   +    VIRGO2  
    7     0.049  19900554  PHT32  146.42  202.26  VCC1552                         1996-06-03T08:12:36    272      7796  549"x181"           188.5659  +13.0761      HVOELK   +    VIRGO2

External archives :

Data at NED - NASA/IPAC Extragalactic Database : NGC 4531

Link by name to the catalogue in VizieR :

NGC 4531 IRAS F12317+1321 IRAS 12317+1321 2MASX J12341584+1304318 SDSS J123415.88+130431.1
TYC 880-751-1 UGC 7729 Gaia DR2 3931777237884009728 Gaia DR3 3931777237884009728

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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