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VII/290 ==OBSOLETE version of Catalogue==
06-Feb-2024: (by Patricia Vannier) See VII/294
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Query from: http://vizier.cds.unistra.fr/viz-bin/VizieR?-source=VII/290
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drwxr-xr-x 257 cats archive 8192 Feb 8 10:28 [Up]
drwxr-xr-x 4 cats archive 4096 Feb 13 17:22 [TAR file]
-rw-r--r-- 1 cats archive 391 Feb 13 17:22 .message
-rw-r--r-- 1 cats archive 47 Feb 6 20:33 =obsolete=
-r--r--r-- 1 cats archive 35172 Feb 13 17:21 ReadMe
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-rw-r--r-- 1 cats archive 55472 Feb 6 20:30 +footg8.gif
-r--r--r-- 1 cats archive 50663845 May 3 2021 catalog.dat.gz [txt] [txt.gz] [fits] [fits.gz] [html]
-r--r--r-- 1 cats archive 2679469 Feb 13 17:19 milliquas72.pdf
-r--r--r-- 1 cats archive 163151 Jul 14 2019 refs.dat [txt] [txt.gz] [fits] [fits.gz] [html]
Beginning of ReadMe :VII/290 The Million Quasars (Milliquas) catalogue, version 7.2 (Flesch, 2021)
================================================================================
The Million Quasars (MILLIQUAS) catalogue, version 7.2.
Flesch E.W.
<Pub. Astron. Soc. Australia 32, 10 (2015)>
=2015PASA...32...10F
=2021yCat.7290....0F
================================================================================
ADC_Keywords: QSOs ; Active gal. nuclei ; Redshifts ; Magnitudes
Keywords: catalogs - quasars: general
Description:
This is a compendium of 829666 type-I QSOs and AGN, largely complete
from the literature to 30 April 2021 including SDSS-DR16 quasars and
VLASS radio. Also included are 703348 candidates which are calculated
as 60%-100% likely to be quasars, including 225051 which are
radio/X-ray associated. Type-II and Bl Lac objects are also included,
bringing the total count to 1573824. Gaia-DR2 astrometry is used
where available, amounting to 66% of all objects.
Changes from version 7.1 are:
(1) Quasars added from publications to 30 April 2021.
(2) The VLASS Quick Look radio catalog is included, which adds 34189
new radio core associations and 6793 probable double radio lobe
associations.
(3) Ongoing audits of SDSS & LAMOST quasars have led to a few
additions & drops. Some WISEA-supported SDSS/LAMOST pipeline
quasars are now accepted which were otherwise marginal. Also
some likely galaxies removed.
Low-confidence/quality or questionable objects (so deemed by their
researchers) are not included in Milliquas. Additional quality cuts
can apply as detailed in the HMQ paper (Flesch, 2015PASA...32...10F).
Full QSO/AGN classification is via spectral lines, thus hidden /
occluded objects may be absent from Milliquas. Two NIQs offset
<2-arcsecs can be reported as a single object if within the same host.
The aim here is to present one unique reliable object per each data
row.
The catalog format is simple, each object is shown as one line bearing
the J2000 coordinates, its original name, object class, red and blue
optical magnitudes, PSF class, redshift, the citations for the name
and redshift, plus up to four radio/X-ray identifiers where
applicable.
Please cite as Milliquas v7.2, Flesch, E.W. 2021, arXiv:2105.12985 or
as Milliquas v7.2 (2021) update, Flesch, E.W. 2015PASA...32...10F.
Questions/comments/praise/complaints may be directed to me at
eric(at)flesch.org.