TABLE  KnownQSO

Contains quasar sources obtained from the VII/258.

This catalogue is a compilation of all known AGNs presented in a
compact and convenient form. It is an update of the previous versions;
and as in the previous editions no information about absorption lines
of X-ray properties are given, but absolute magnitudes are given,
assuming Ho=71km/s/Mpc and q0=0 (notice the change of cosmology:
Ho was assumed to be 50km/s/Mpc in the previous editions). When
available, the 20cm and 6cm radio flux are given.

The present edition of this catalogue contains the quasars with
measured redshift known prior to July 1st, 2009. It contains 133336
quasars, 1374 BL Lac objects and 34231 active galaxies (including
15627 Seyfert 1's), almost doubling the number listed in the 12th
edition. Lists of known lensed quasars (table2.dat) and double quasars
(table3.dat) are also given here. See
Veron & Veron, 2006, A&A, 455, 773
for further details.

Required constraints:
  • Primary key is (qsoID)

NameTypeLengthUnitDescriptionDefault ValueUnified Content Descriptor
qsoIDint4 Unique identifier for each QSO assigned in the SVS-99999999NUMBER
radioDetecttinyint1 Detected in radio (0=no; 1=yes)0 
namevarchar17 Most common nameNone 
rafloat8degreesRA (J2000.0) of the source-0.99999995e9POS_EQ_RA_MAIN
decfloat8degreesDec (J2000.0) of the source-0.99999995e9POS_EQ_DEC_MAIN
cxfloat8 Cartesian x of unit (ra,dec) vector on celestial sphere-0.99999995e9POS_EQ_X
cyfloat8 Cartesian y of unit (ra,dec) vector on celestial sphere-0.99999995e9POS_EQ_Y
czfloat8 Cartesian z of unit (ra,dec) vector on celestial sphere-0.99999995e9POS_EQ_Z
htmIdbigint8 Hierarchical Triangular Mesh (20-deep) of centroid-99999999POS_GENERAL
posCodevarchar1 Position code: A=approximate, O=optical, R=radio (O,R have accuracy better than 1 arcsec)- 
flux6cmreal4JanskyFlux in the 6cm (5GHz) band-0.99999995e9 
refFlux6cmsmallint2 Reference for flux6cm-9999NUMBER
flux20cmreal4JanskyFlux in the 20cm (1.4GHz) band-0.99999995e9 
refFlux20cmsmallint2 Reference for flux20cm-9999NUMBER
zMethodvarchar1 Limit (<) or method flag (*=measured by slitless spectrscopy) on z- 
zreal4 Spectroscopic redshift-0.99999995e9 
spClassvarchar4 Spectroscopic classificationNone 
typeVmagvarchar1 Type of photometry of vMag (*=photographic; B=blue; R=red; I,J or K=infrared; O=photographic O or J)- 
vMagreal4magApparent magnitude in passband typeVmag-0.99999995e9 
bmvreal4magColour index (B-V)-0.99999995e9 
umbreal4magColour index (U-B)-0.99999995e9 
absMagreal4magAbsolute magnitude (H_0=50 km/s/Mpc; q_0=0)-0.99999995e9 
refChartsmallint2 Finder chart reference-9999NUMBER
refMagssmallint2 Reference for the photometry-9999NUMBER
refZsmallint2 Reference for the redshift-9999NUMBER
raDec1950varchar20 Sexagesimal RA/Dec at equinox B1950.0None 
Total length135