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/AJ/139/390
  Optically selected BL Lac objects from SDSS-DR7 (Plotkin+, 2010)
ReadMe+ftp
2010AJ....139..390P
Similar Catalogs
[METAcat] [METAcells] [stats]
Post annotation 		img(gal)
1.J/AJ/139/390/RloudObserved and derived parameters of radio-loud BL Lac candidates (tables 5 and 7 of paper) (637 rows) (released 2017-06-01)
[METAtab] [METAcola]

Simple ConstraintList Of Constraints
 
Query by Constraints constraints help applied on Columns (Output Order: + - ) [METAcola]
ShowSortColumn  Constraint Explain   (UCD)
  recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
  SDSS (char) SDSS source name (HHMMSS.ss+DDMMSS.s) (Note 1)   (meta.id;meta.main)
  RAJ2000 deg (i) Right ascension (J2000) (pos.eq.ra;meta.main)
  DEJ2000 deg (i) Declination (J2000) (pos.eq.dec;meta.main)
  Cl (char) [HL] High or Low-confidence Classification (Note 2)   (meta.code.qual)
  NB (char) [NY] Object appears as NED BL Lac object? (Note 3)   (meta.code)
  umag mag SDSS u-band apparent magnitude (phot.mag;em.opt.U)
  gmag mag SDSS g-band apparent magnitude (phot.mag;em.opt.B)
  rmag mag SDSS r-band apparent magnitude (phot.mag;em.opt.R)
  imag mag SDSS i-band apparent magnitude (phot.mag;em.opt.I)
  zmag mag SDSS z-band apparent magnitude (phot.mag;em.opt.I)

ALL cols		    
 (i)indexed column
  zsp  (n) Spectroscopic redshift (src.redshift)
  q_zsp (char) [LRTU] Redshift reliability (Note 4)   (meta.code.qual)
  C  (n) CaII H/K break strength (spect.line.intensity)
  alpha  Optical spectral index referenced at 616.5nm αν (spect.index)
  Comments (char) Additional comments (Note 5)   (meta.note)
  Sloan  Display the SDSS data for this BL Lac object (meta.ref.url)
  zgal  (n) Host galaxy redshift limit (Note 6)   (src.redshift)
  FAGN mag AGN component apparent magnitude (Note 7)   (phot.mag)
  logLo [10-7W/Hz]Log AGN component optical specific luminosity (Note 8)   (phys.luminosity;em.opt)
  f_F1.4 (char) [FNUX] Radio flag, U=upper limit (Note 9)   (meta.code)
  F1.4 mJy (n) Radio flux density at observed-frame 1.4GHz (Note 10)   (phot.flux.density;em.radio.750-1500MHz)
  logLr [10-7W/Hz](n) Log radio specific luminosity (Note 11)   (phys.luminosity;em.radio)
  f_FX (char) [RU] X-ray flag, U=upper limit (Note 12)   (meta.code)
  FX 10-16W/m2Unabsorbed X-ray flux in 10–13erg/scm2 (Note 13)   (phot.flux;em.X-ray)
  logLX [10-7W/Hz]Log X-ray specific luminosity (Note 14)   (phys.luminosity;em.X-ray)
  a(ro)  (n) Radio-optical spectral index αro (Note 15)   (spect.index)
  a(oX)  Optical-X-ray spectral index αoX (Note 16)   (spect.index)
  NED  ask the NED data-base about this object (meta.ref)

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 (2025-08-23T17:55:09)
-3
-source=J/AJ/139/390/Rloud
-ref=VIZ68aa007d2b6057
elapse time 0

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 963736 Jun 11 08:12 /srv/httpd/bin/vizier
vizier -- Version 7.5.1
cgiprint -- version 9.68 (2016-01-16)
uery(0 'metaviz@VIZIR'):
[1755971709]   Select ucdid, name, class, explain From METAucd where ucdid=321
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1755971709]   Select famid, name, explain From METAfam where famid=1247
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1755971709]   Select ucdid, name, class, explain From METAucd where ucdid=294
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1755971709]   Select famid, name, explain From METAfam where famid=1311
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1755971709]   Select ucdid, name, class, explain From METAucd where ucdid=288
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1755971709]   Select famid, name, explain From METAfam where famid=1325
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1755971709]   Select ucdid, name, class, explain From METAucd where ucdid=80
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1755971709]   Select famid, name, explain From METAfam where famid=1261
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1755971709]   Select ucdid, name, class, explain From METAucd where ucdid=84
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1755971709]   Select famid, name, explain From METAfam where famid=530
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1755971709]   Select famid, name, explain From METAfam where famid=745
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1755971709]   Select ucdid, name, class, explain From METAucd where ucdid=191
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1755971709]   Select ucdid, name, class, explain From METAucd where ucdid=930
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1755971709]   Select famid, name, explain From METAfam where famid=1316
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1755971709]   Select ucdid, name, class, explain From METAucd where ucdid=109
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1755971709]   Select ucdid, name, class, explain From METAucd where ucdid=905
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1755971709]   Select famid, name, explain From METAfam where famid=508
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1755971709]   Select ucdid, name, class, explain From METAucd where ucdid=900
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1755971709]   Select ucdid, name, class, explain From METAucd where ucdid=106
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1755971709]   Select ucdid, name, class, explain From METAucd where ucdid=945
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1755971709]   Select famid, name, explain From METAfam where famid=584
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1755971709]   Select famid, name, explain From METAfam where famid=1017
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1755971709]   Select ucdid, name, class, explain From METAucd where ucdid=83
----db1_reset(0 'metaviz@VIZIR')
----inherit(u=used, h=hidden):
     [u] +source=J/AJ/139/390/Rloud
     [u] -ref=VIZ68aa007d2b6057
====inherit(): added 0 hidden fields
----free temporary files
----db1_close(0 'metaviz@VIZIR')
----db1_close(1 'metaviz@VIZIR')
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