VizieR

CfA VizieR . ADAC VizieR . Cambridge (UK) VizieR . IUCAA VizieR . INASAN VizieR .
CDS

VizieR

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
Post annotation 		img(gal)
1.J/MNRAS/274/1194/table1WFC optical identification programme ID summary (209 rows)

Simple ConstraintList Of Constraints
 
Query by Constraints constraints help applied on Columns (Output Order: + - )
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
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usage  Display UCD1+    UCD1  
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