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VizieR

Simple TargetList Of TargetsFast Xmatch with large catalogs or Simbad
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II/233
  Tycho variables stars (Piquard 2001)
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img(gal)
1.II/233/tablet(c)Stars detected as variable in T (954 rows)
2.II/233/tableb-v(c)Stars detected as variable in BT-VT (107 rows)
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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)Status (char) [PUA] Status of the star (Note 1)   (meta.code;src.var)
   (ALL)TYC (char) Tycho designation (Cat. I/239) (meta.id;meta.main)
   (ALL)RA(ICRS) deg (i) Tycho right ascension (ICRS, Epoch 1991.25) (pos.eq.ra;meta.main)
   (ALL)DE(ICRS) deg (i) Tycho declination (ICRS, Epoch 1991.25) (pos.eq.dec;meta.main)
   (ALL)HIP  (n) Hipparcos (Cat. I/239) number (meta.id)
   (ALL)HIP_data (char) ask the Simbad data-base about this object (meta.ref)
   (ALL)VarType (char) Hipparcos variability type (P5 field of HIP) (Note 2)   (meta.code;src.var)
   (ALL)Nt  Number of used detected transits (meta.number)
   (ALL)BTmag mag Tycho BT magnitude from Tycho-2 (Hoeg et al., 2000, Cat. I/259) (phot.mag;em.opt.B)
   (ALL)VTmag mag Tycho VT magnitude from Tycho-2 (Hoeg et al., 2000, Cat. I/259) (phot.mag;em.opt.V)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
   (ALL)tT   [0,1] Probability of a constant star to appear variable in T magnitude (Note 3)   (stat.fit.goodness;src.var)
   (ALL)t(BT-VT)   [0,1] Probability of a constant star to appear variable in (BT-VT) (Note 3)   (stat.fit.goodness;src.var)
   (ALL)VarFlag  (n) [1,3] Amplitude flag (H6 field of HIP) (Note 4)   (meta.code;src.var)
   (ALL)HvarType (char) [CDMPRU] Period or Unsolved in Hipparcos (H52 field in HIP) (Note 5)   (meta.code;src.var)
   (ALL)GN (char) [GN] Cross identification with GCVS or NSV (meta.id)
   (ALL)VarType2 (char) [UVW] Variability flag from Tycho (T48 field) (Note 6)   (meta.code;src.var)
   (ALL)Dup (char) [RYZ] Duplicity detection from Tycho (T49 field) (Note 7)   (meta.code;src.var)
   (ALL)An (char) [AB] Flag marking either Annex A or Annex B of the Tycho Epoch Photometry Annexes (field T50) (meta.code;src.var)
   (ALL)Name (char) GCVS name of the star if existing (meta.id)
   (ALL)PerOld d Known period (time.period)
   (ALL)SpType (char) Spectral type from Simbad (src.spType)
   (ALL)Period d Best period found (time.period)
   (ALL)Ampl d Amplitude of the light curve after best fit (src.var.amplitude)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
   (ALL)Dur  Duration of the light curve after best fit (in phase unit) (time.interval)
   (ALL)Type (char) This work type of variability (ech: inadequate time sampling suspected) (meta.code;src.var)
   (ALL)New (char) [*] *: New variable (meta.id)
   (ALL)Simbad (char) ask the Simbad data-base about this object (meta.ref)

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