Simple TargetList Of TargetsFast Xmatch with large catalogs or Simbad
Target Name (resolved by Sesame) or Position:
 Target dimension:
NB: The epoch used for the query is the original epoch of the table(s)Radius Box size

  
J/A+A/692/A154
  DULAG. A DUal and Lensed AGN candidate catalog (Wu+, 2024)
ReadMe+ftp
2024A&A...692A.154W
Similar Catalogs
[METAcat] [METAcells] [stats]
Post annotation 		img(gal)
1.J/A+A/692/A154/golden(c)Golden sample (1867 rows) (released 2025-02-26)
[METAtab] [METAcola]
2.J/A+A/692/A154/superset(c)Superset (5286 rows) (released 2025-02-26)
[METAtab] [METAcola]
Help Xmatch is

Simple ConstraintList Of Constraints
 
Query by Constraints constraints help applied on Columns (Output Order: + - )
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Column  Constraint Explain   (UCD)
  (ALL)recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
   (ALL)GaiaDR3  Gaia DR3 unique id (source_id) (meta.id;meta.main)
   (ALL)RA_ICRS deg (i) Right ascension in Gaia (ICRS) at Ep=2016 (ra) (pos.eq.ra;meta.main)
   (ALL)DE_ICRS deg (i) Declination in Gaia (ICRS) at Ep=2016 (dec) (pos.eq.dec;meta.main)
   (ALL)Gmag mag G-band mean magnitude in Gaia (photgmean_mag) (phot.mag;em.opt)
   (ALL)RPlx  (n) Normalised parallax (parallaxovererror) (stat.fit.omc)
   (ALL)Rpm  (n) Normalised proper motion (proper motionovererror) (stat.fit.omc)
   (ALL)BP-G mag (n) Gaia BP-G color (bp_g) (phot.color;em.opt;em.opt)
   (ALL)G-RP mag (n) Gaia G-RP color (g_rp) (phot.color;em.opt;em.opt)
   (ALL)W1-W2 mag (n) CatWISE W1-W2 color (w1_w2) (phot.color;em.IR;em.IR)
   (ALL)Class (char) [qc] Class of the spectroscopically identified result q(quasar)/c(candidate) (class) (meta.code.class)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (1)IPDfmp  Gaia percent of source with more than one peak (ipdfracmulti_peak) (stat.fit.param)
  (1)FlagGaia (char) QSO quality flag by Gaia spectra (gaiaspectraflag) (meta.code.error)
  (1)FlagVari (char) QSO quality flag by Gaia light variation (gaiavariflag) (meta.code.error)
  (1)NNeigh  Number of Gaia neighbors with a radius of 5" (nneighborsource) (meta.number)
  (1)Comment (char) Reasons for multiple neighbors (neighborsourcecomment) (meta.note)
  (1)z  (n) Redshift (z) (src.redshift)
  (1)r_z (char) Reference catalog of the redshift (z_reference) (meta.ref;pos.frame)
  (1)IdentClass (char) Class of AGN pairs identified by literature (identified_class) (meta.code.class)
  (1)r_IdentClass (char) Literature bibcode for class of AGN pairs (identifiedclassbibcode) (meta.ref;pos.frame)
  (2)IPDfmp % Gaia percent of source with more than one peak (ipdfracmulti_peak) (stat.fit.param)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
Adapt form
 Display your selection only Reset to default columns
usage  Display UCD1+    UCD1  
.errorfile=/tmp/V-3.err (2025-04-05T05:46:29)
-3
-source=J/A+A/692/A154
-ref=VIZ67f0c3b53d7d80
elapse time 1

Options: wopt=0, optS=0, onote=0, opt1=8, opos=0

Contents of error file (/tmp/V-3.err):
-rwxr-xr-x 1 root root 963656 Mar 12 13:03 /srv/httpd/bin/vizier
vizier -- Version 7.4.6
[1743831990]   Select ucdid, name, class, explain From METAucd where ucdid=63
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1743831990]   Select famid, name, explain From METAfam where famid=93
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1743831990]   Select ucdid, name, class, explain From METAucd where ucdid=355
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1743831990]   Select famid, name, explain From METAfam where famid=149
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1743831990]   Select ucdid, name, class, explain From METAucd where ucdid=64
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1743831990]   Select famid, name, explain From METAfam where famid=105
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1743831990]   Select ucdid, name, class, explain From METAucd where ucdid=81
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1743831990]   Select famid, name, explain From METAfam where famid=314
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1743831990]   Select ucdid, name, class, explain From METAucd where ucdid=80
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1743831990]   Select famid, name, explain From METAfam where famid=1261
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1743831990]   Select ucdid, name, class, explain From METAucd where ucdid=321
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1743831990]   Select famid, name, explain From METAfam where famid=1247
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1743831990]   Select ucdid, name, class, explain From METAucd where ucdid=83
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1743831990]   Select ucdid, name, class, explain From METAucd where ucdid=251
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1743831990]   Select famid, name, explain From METAfam where famid=1255
----db1_reset(0 'metaviz@VIZIR')
----opt1= 8
----inherit(u=used, h=hidden):
     [u] +source=J/A+A/692/A154
     [u] -ref=VIZ67f0c3b53d7d80
====inherit(): added 0 hidden fields
----free temporary files
----db1_close(0 'metaviz@VIZIR')
→ Cite/acknowledge VizieR catalogue
→ Rules of usage of VizieR data

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