VizieR

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CDS

VizieR

Simple TargetList Of TargetsFast Xmatch with large catalogs or Simbad
Target Name (resolved by Sesame) or Position:

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II/20A
  UBV Photometry of O and B Stars in Vela (Denoyelle 1977)
ReadMe+ftp
1977A&AS...27..343D
Similar Catalogs
Post annotation 		img(gal)
1.II/20A/catalog(c)Results (table 3 of the paper), completed with accurate position and designation (381 rows)
2.II/20A/remarksOriginal remarks (added in July 2016) (120 rows)
3.II/20A/notesRemarks about star identifications in the course of position retrieval (added in July 2016) (44 rows)

Simple ConstraintList Of Constraints
 
Query by Constraints constraints help applied on Columns (Output Order: + - )
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Column  Constraint Explain   (UCD)
  (ALL)recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
   (ALL)m_Seq  (n) [1/5] Multiplicity index to star (meta.code.multip)
   (ALL)Seq   [1/358] Running number (meta.id;meta.main)
  (1)HD  (n) HD number (meta.id)
  (1)CPD (char) Cape Photographic Durchmusterung (or CD) (meta.id)
  (1)n_CPD (char) [ *] * = Cordoba Durchmusterung designation (meta.note)
  (1)GLON deg Galactic longitude (pos.galactic.lon)
  (1)GLAT deg Galactic latitude (pos.galactic.lat)
  (1)Vmag mag (n) [2.4/14.5] V magnitude (phot.mag;em.opt.V)
  (1)u_Vmag (char) [ ()] Uncertainty flag for V (meta.code.error)
  (1)B-V mag (n) (B-V) color index (phot.color;em.opt.B;em.opt.V)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (1)u_B-V (char) [ (] Uncertainty flag for B-V (meta.code.error;phot.color;em.opt.B)
  (1)U-B mag (n) (U-B) color index (phot.color;em.opt.U;em.opt.B)
  (1)u_U-B (char) [ (] Uncertainty flag for U-B (meta.code.error;phot.color;em.opt.U)
  (1)Sp (char) MK or HD spectral classification (src.spType)
  (1)r_Sp  (n) [1,8] Number of the source for MK Dp. (meta.ref)
  (1)em (char) [ E] E = Hα emission noted on red plates (meta.note)
  (1)Sp2 (char) Spectral type obtained from Q method (src.spType)
  (1)Q mag (n) Q parameter = (U-B)-0.72 (B-V) (phot.color.reddFree)
  (1)E(B-V) mag (n) (B-V) colour excess (phot.color.excess)
  (1)A(V) mag (n) A(V) parameter = 3E(B-V) (phys.absorption)
  (1)m-M mag (n) Distance modulus (phot.mag.distMod)
  (1)R pc (n) Distance of the star (pos.distance;pos.heliocentric)
  (1)Z pc Distance from the galactic plane [R*sin(GLAT)] (pos.cartesian.z;pos.galactic)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (1)Nobs  Number of observations (meta.number)
  (1)rem (char) [ *] comment in file "remarks.dat" (meta.note)
  (1)RAJ2000 "h:m:s" (n) Right Ascension J2000, Ep=J2000 (pos.eq.ra)
  (1)DEJ2000 "d:m:s" (n) Declination J2000, Ep=J2000 (pos.eq.dec)
  (1)f_Sname (char) * indicates an insecure identification, and N a note about the identification (meta.code)
  (1)Sname (char) Name understandable by Simbad (meta.id)
  (1)Name2 (char) Other name (meta.id)
  (1)_RA.icrs deg (n)(i) Right ascension (ICRS) (computed by VizieR, not part of the original data) (pos.eq.ra)
  (1)_DE.icrs deg (n)(i) Declination (ICRS) (computed by VizieR, not part of the original data) (pos.eq.dec)
  (2+3)Text (char) Text of note (original notes in "remarks.dat", notes added at CDS about problematic star identification in "notes.dat") (meta.note)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
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