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/MNRAS/274/1194
  Optical Identifications of ROSAT EUV Sources (Mason+ 1995)
ReadMe+ftp
1995MNRAS.274.1194M
Similar Catalogs
[METAcat] [METAcells] [stats]
Post annotation 		img(gal)
1.J/MNRAS/274/1194/table1WFC optical identification programme ID summary (209 rows) (released 2024-06-24)
[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)
  Name (char) Source name (meta.id)
  l_S1 (char) Limit flag on S1 (meta.code.error)
  S1 ct/ks (n) WFC survey filter S1 (60-140A) counts (phot.count;em.X-ray)
  l_S2 (char) Limit flag on S2 (meta.code.error)
  S2 ct/ks (n) WFC survey filter S2 (110-200A) counts (phot.count;em.X-ray)
  NH 10+20cm-2(n) Galactic Hydrogen column density (phys.columnDensity)
  RAJ2000 "h:m:s" (i) Right ascension J2000 (pos.eq.ra;meta.main)
  DEJ2000 "d:m:s" (i) Declination J2000 (pos.eq.dec;meta.main)
  n_DEJ2000 (char) [g:] A 'g' indicates that the data are from the Hubble Space Telescope Guide Star Catalog (meta.note)
  Vmag mag (n) V magnitude of the optical counterpart (phot.mag;em.opt.V)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  Vmag2 mag (n) Upper limit of Vmag when n_Vmag2='-' (phot.mag;em.opt.V)
  u_Vmag (char) Uncertainty flag on Vmag (meta.code.error)
  n_Vmag (char) Note on Vmag (Note 1)   (meta.note)
  B-V mag (n) B-V color index of the optical counterpart (phot.color;em.opt.B;em.opt.V)
  SpType (char) Spectral type of the optical counterpart (src.spType)
  l_alpha (char) Limit flag on alpha (meta.code.error;pos.eq.ra)
  alpha  (n) Source apparent EUV to optical flux ratio (phot.flux;arith.ratio)
  Class (char) Identification class (Note 2)   (src.class)
  EWCa 0.1nm (n) Equivalent width of the Ca H 3933A chromospheric emission line (for stars only) (spect.line.eqWidth)
  n_EWCa (char) [u-] Note on EWCa (Note 3)   (meta.note)
  EWHa 0.1nm (n) Equivalent width of the Halpha line (for stars only) (spect.line.eqWidth)
  n_EWHa (char) [?u-] Note on EWHa (Note 3)   (meta.note)
  FWHb 10+3km/s (n) Full width at half maximum of the Hbeta line (spect.line.width)
  EWHb 0.1nm (n) Equivalent width of the Hbeta line (spect.line.eqWidth)
  u_EWHb (char) Uncertainty flag on EWHb (meta.code.error)
  X (char) [y] y: there is an X-ray telescope position available for the source (meta.note)
  Note (char) [+] +: additional information in appena file (meta.note)
  Com (char) Comments (meta.note)

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 (2025-07-01T08:17:33)
-3
-source=J/MNRAS/274/1194
-ref=VIZ6863999d376f1
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
++++popularity(all): 6.73243e+06 => 6.83
++++popularity(catid=74150103): 1097 => 0.45
----db1_query(0 'metaviz@VIZIR'):
[1751357853]   Select idori, kwdid, name, explain From METAorigin
----db1_query(0 'metaviz@VIZIR'):
[1751357853]   Select ucdid, name From METAucd where ucdid>=0
----db1_exec(0 'metaviz@VIZIR'):
[1751357853]    Update METAhit set etime=804673053,  Ncalls = Ncalls+1 where catid=74150103 and hstid=-1 and btime=802089000
VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1751357853]   Select famid, name, explain From METAfam where famid=1331
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1751357853]   Select ucdid, name, class, explain From METAucd where ucdid=106
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1751357853]   Select ucdid, name, class, explain From METAucd where ucdid=9
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1751357853]   Select famid, name, explain From METAfam where famid=581
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1751357853]   Select ucdid, name, class, explain From METAucd where ucdid=299
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1751357853]   Select famid, name, explain From METAfam where famid=97
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1751357853]   Select ucdid, name, class, explain From METAucd where ucdid=293
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1751357853]   Select famid, name, explain From METAfam where famid=1273
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1751357853]   Select ucdid, name, class, explain From METAucd where ucdid=297
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1751357853]   Select famid, name, explain From METAfam where famid=1313
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1751357853]   Select famid, name, explain From METAfam where famid=1261
----db1_reset(0 'metaviz@VIZIR')
----inherit(u=used, h=hidden):
     [u] +source=J/MNRAS/274/1194
     [u] -ref=VIZ6863999d376f1
====inherit(): added 0 hidden fields
----free temporary files
----db1_close(0 'metaviz@VIZIR')
----db1_close(1 'metaviz@VIZIR')
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