QSO B1549-790

Query : QSO B1549-790

Basic data :
QSO B1549-790 -- Quasar
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:
Sy2 (), Rad (2014ApJS,ICRF,...), AGN ([VV2000c],[VV2003c],...), IR (IRAS,2MASS,...), Bla (2009A&A,[MGL2009],...), QSO (2013MNRAS,QSO), X (2MAXI,PBC,...), G (2011MNRAS,6dFGS,...), Sy1 (2013ApJS), cm (AT20G,ATPMN), * (Gaia)
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) :
15 56 58.8747821520 -79 14 04.261412796 (Optical) [ 0.4245 0.4450 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
FK4 coord. (ep=B1950 eq=1950) :
15 49 28.0665061693 -79 05 17.369580198 [ 0.4245 0.4450 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) :
311.1786903070255 -19.4683478690420 [ 0.4245 0.4450 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 :
0.965 -1.117 [0.501 0.528 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) 41629 [~] / z(spectroscopic) 0.15 [~] / cz 44969 [~]
   (Opt) D 2017ApJS..233....3T
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 (7) :
B 18.80 [~] D 2008MNRAS.384..775M
V 18.800 [~] D 2010ApJ...712..303C
R 17.84 [~] D 2009MNRAS.399..683J
G 19.583477 [0.006325] C 2020yCat.1350....0G
J 15.231 [0.065] C 2003yCat.2246....0C
H 13.905 [0.048] C 2003yCat.2246....0C
K 12.407 [~] D 2010ApJ...712..303C
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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Some important notes on this object about identifications and objects associations.
notes:


The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (45) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

QSO B1549-790 LEDA 2828606 SWIFT J1557.8-7913 [MML2015] 5BZQ J1556-7914
AT20G J155658.7-791404 2MASS J15565889-7914042 TIC 383941961 [VV2000c] J155658.5-791405
AT20G J155658-791404 2MAXI J1555-793 VSOP J1556-7914 [VV2003c] J155658.5-791405
ATPMN J155658.7-791403 MRC 1549-790 WISEA J155658.87-791404.2 [VV2006c] J155658.5-791405
6dFGS gJ155658.9-791404 PBC J1557.6-7913 WISE J155658.87-791404.2 [VV2010c] J155658.5-791405
ICRF J155658.8-791404 PKS 1549-79 WMAP J1556-7912 [VV98c] J155658.5-791405
IERS B1549-790 PKS 1549-790 WMAP J1555-7912 Gaia EDR3 5778578162594526976
IRAS 15494-7905 PKS J1557-7913 3XMM J155658.9-791403 Gaia DR1 5778578158295248768
IRAS F15494-7905 PMN J1556-7914 [CH94] 1549-790 Gaia DR2 5778578162594526976
IVS B1549-790 PSCz Q15494-7905 [MEM2008] 211
1Jy 1549-79 RORF 1549-790 [MGL2009] BZU J1556-7914
1Jy 1549-790 SUMSS J155657-791403 [MGL2009] BZQ J1556-7914

References (189 between 1850 and 2022) (Total 189)
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 : 2    PM : 3   

   

Observing logs


herschel : 6   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : QSO B1549-790

Link by name to the catalogue in VizieR :

IERS B1549-790 IRAS 15494-7905 IRAS F15494-7905 2MASS J15565889-7914042 PKS 1549-79
PKS 1549-790 PKS J1557-7913 PMN J1556-7914 SUMSS J155657-791403 VSOP J1556-7914
WISEA J155658.87-791404.2 WISE J155658.87-791404.2 WMAP J1556-7912 WMAP J1555-7912 Gaia EDR3 5778578162594526976
Gaia DR1 5778578158295248768 Gaia DR2 5778578162594526976

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Annotations :
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2022.06.26-10:20:37

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