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J/AJ/121/2124
  λ Ori pre-main-sequence stars photometry (Dolan+, 2001)
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1.J/AJ/121/2124/table1(c)Improved data for Paper I (Dolan & Mathieu, 1999, Cat. J/AJ/118/2409) stars (72 rows)
2.J/AJ/121/2124/table2(c)Pre-main-sequence stellar data (204 rows)
3.J/AJ/121/2124/table4(c)Massive star photometry (20 rows)
4.J/AJ/121/2124/table5Massive star derived data (20 rows)
5.J/AJ/121/2124/table7(c)Follow-up data for DIL (Duerr, Imhoff & Lada, 1982ApJ...261..135D) stars (99 rows)

 
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)
   (1+2+5)[DM99]  (i) [1/72] The λ Ori running number (meta.id;meta.main)
  (1+2)JName (char) The λ Ori designation (meta.id)
  (1+2+5)RAJ2000 "h:m:s" (i) Right Ascension from USNO-A 2.0 catalog (J2000) (pos.eq.ra;meta.main)
  (1+2+5)DEJ2000 "d:m:s" (i) Declination from USNO-A 2.0 catalog (J2000) (pos.eq.dec;meta.main)
  (1+2+3)Vmag mag The V band magnitude (phot.mag;em.opt.V)
  (1+2)V-R mag The (V-R) color (phot.color;em.opt.V;em.opt.R)
  (1+2)R-I mag The (R-I) color (phot.color;em.opt.R;em.opt.I)
  (1+2)LogAge [yr] Log of the Age (Note 1)   (time.age)
  (1+2)Mass solMass Mass (Note 1)   (phys.mass)
  (1)f_[DM99] (char) [b] Indicates star does not exist in the USNO-A2.0 database. The coordinates (A1.0) and magnitudes listed are from Paper I, Dolan & Mathieu, 1999AJ....118.2409D. (meta.code)

ALL cols
    
 (i)indexed column
  (1)PapI (char) Show the values from PaperI (meta.ref.url)
  (2)f_Vmag (char) [c] Indicates photometry from the lower-quality 1998 data (meta.code)
  (2)f_V-R (char) [c] Indicates photometry from the lower-quality 1998 data (meta.code)
  (2)f_R-I (char) [c] Indicates photometry from the lower-quality 1998 data (meta.code)
  (2)EqWidLi 0.1nm (n) Equivalent width of Li (Note 1)   (spect.line.eqWidth)
  (2)f_EqWidLi (char) [gh] Flag on EqWidLi (Note 2)   (meta.code)
  (2)EqWidHa 0.1nm (n) Equivalent width of Hα (Note 3)   (spect.line.eqWidth;em.line.Halpha)
  (2)f_EqWidHa (char) [d] Indicates star shows a strong P Cygni profile (meta.code)
  (2)RVel km/s Stellar radial velocity (spect.dopplerVeloc;pos.heliocentric)
  (2)f_RVel (char) [fij] Flag on RVel (Note 4)   (meta.code)
  (2)f_Mass (char) [e] Indicates star is outside the age/mass grid (meta.code)
   (3+4)HD  (i) The HD (Cat. III/135) number (meta.id;meta.main)
  (3)PPM  (n) The Positions & Proper Motions Catalog (Cat. I/146) number (meta.id)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
  (3)SpType (char) Spectral type (Note 1)   (src.spType)
  (3)f_SpType (char) [b] Flag on SpType (Note 2)   (meta.code)
  (3)e_Vmag mag Uncertainty in Vmag (stat.error;phot.mag;em.opt.V)
  (3)b-y mag The (b-y) Stroemgren color (phot.color;em.opt.B;em.opt.V)
  (3)e_b-y mag Uncertainty in (b-y) (stat.error;phot.color;em.opt.B)
  (3)m1 mag The m1 band magnitude (phot.mag)
  (3)e_m1 mag Uncertainty in m1 (stat.error)
  (3)c1 mag The c1 band magnitude (phot.mag;em.opt.V)
  (3)e_c1 mag Uncertainty in c1 (stat.error)
  (3)o_b-y  Number of Stroemgren uvby observations (meta.number)
  (3)beta mag The β band magnitude (phot.color;em.opt.B;em.line.Hbeta)
  (3)e_beta mag Uncertainty in beta (stat.error)
  (3)o_beta  Number of beta observations (meta.number)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
  (3)r_HD  Reference on HD (meta.ref;pos.frame)
  (3)Simbad (char) ask the Simbad data-base about this object
  (3)_RA deg (i) Right Ascension (J2000) from SIMBAD (not part of the original data) (pos.eq.ra;meta.main)
  (3)_DE deg (i) Declination (J2000) from SIMBAD (not part of the original data) (pos.eq.dec;meta.main)
  (4)E(B-V) mag The E(B-V) reddening (phot.color.excess)
  (4)Teff [K] Log of the effective temperature (phys.temperature.effective)
  (4)Lum [solLum] Log of the luminosity in solar units (phys.luminosity)
  (4)Mass [solMass]Log of the mass in solar units (phys.mass)
  (4)Dist pc (n) Distance (pos.distance;pos.heliocentric)
  (4)e_Dist % (n) The parallax fractional error (stat.error)
  (5)DIL  The Duerr, Imhoff & Lada (1982ApJ...261..135D) survey number (meta.id;meta.main)
  (5)USNO-A2.0 (char) The USNO A2.0 identification (meta.id)
  (5)f_USNO-A2.0 (char) [abcde] Flag on USNO-A2.0 (Note 1)   (meta.code)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
  (5)USNO-A2.0_data (char) Link to all parameters of US Naval Obs., A2.0 catalogue (1998USNO2.C......0M) (meta.id)

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