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/AJ/101/1408
  Massive stars in Cyg OB2. (Massey+ 1991)
ReadMe+ftp
1991AJ....101.1408M
Similar Catalogs
Post annotation 		img(gal)
1.J/AJ/101/1408/mt91Observations in Cyg OB2 (tables 2,5,6) (801 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)
  MT91  (n)(i) [1/799] Star identification (Note 1)   (meta.id)
  RAJ2000 "h:m:s" (i) Right Ascension J2000 (hours) (Note 2)   (pos.eq.ra;meta.main)
  DEJ2000 "d:m:s" (i) Declination J2000 (sign) (Note 2)   (pos.eq.dec;meta.main)
  Vmag mag (n) V magnitude (phot.mag;em.opt.V)
  U-B mag (n) U-B colour derived from B-V (phot.color;em.opt.U;em.opt.B)
  u_U-B (char) [:?] Uncertainty flag on U-B (Note 3)   (meta.code.error)
  B-V mag (n) B-V colour (phot.color;em.opt.B;em.opt.V)
  u_B-V (char) [:?] Uncertainty flag on B-V (Note 3)   (meta.code.error)
  SpType (char) MK Spectral type (Note 4)   (src.spType)
  Rem (char) Remarks (Note 5)   (meta.note)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
Adapt form
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usage  Display UCD1+    UCD1  
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