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/A+A/575/A42
  Optical counterparts of ROSAT X-ray in 2 fields (Greiner+, 2015)
ReadMe+ftp
2015A&A...575A..42G
Similar Catalogs
Post annotation 		img(gal)
1.J/A+A/575/A42/table8Optical objects inside or near the error circles of the ROSAT positions in 26 Com (327 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)
  Xseq  Running number of the X-ray source (meta.number)
  m_Xseq (char) [a-j] ID for multiple optical objects (meta.code.multip)
  RAJ2000 "h:m:s" (n)(i) Right Ascension (J2000) (Note 1)   (pos.eq.ra;meta.main)
  DEJ2000 "d:m:s" (n)(i) Declination (J2000) (Note 1)   (pos.eq.dec;meta.main)
  Sep arcsec (n) Distance between X-ray centroid and object (pos;arith.diff)
  Name (char) Bright star name (meta.id;meta.main)
  Var (char) C if constant or GCVS Name if variable (Note 2)   (meta.id)
  Type (char) Source type (Note 3)   (meta.code;src.var)
  SpType (char) Spectral Type from Simbad (Note 4)   (src.spType)
  Bmag mag (n) USNO B magnitude (phot.mag;em.opt.B)
  Vmag mag (n) USNO V magnitude (phot.mag;em.opt.V)
  Rmag mag (n) USNO R magnitude (phot.mag;em.opt.R)
  Ampl (char) Amplitude of optical variability (src.var.amplitude;em.opt)
  X/opt [-] (n) log of X-ray to optical flux ratio (Note 5)   (phot.flux;arith.ratio)

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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