VizieR

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VizieR

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

  
Target dimension:

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J/A+A/298/115
  ROSAT study of Praesepe (Randish+, 1995)
Post annotation
img(gal)
1.J/A+A/298/115/table2(c)Optical properties of X-ray detected Praesepe candidates (68 rows)
2.J/A+A/298/115/table4X-ray properties of the detected Praesepe candidates (68 rows)
3.J/A+A/298/115/table5(c)Undetected Praesepe candidates lying in the low sensitivity image region (12 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)Id   [1/68] X-ray number (meta.id;meta.main)
  (1)OtherId (char) Optical identification (Note 1)   (meta.id)
  (1+3)RAJ2000 "h:m:s" (i) Right ascension J2000 (pos.eq.ra;meta.main)
  (1+3)DEJ2000 "d:m:s" (i) Declination J2000 (pos.eq.dec;meta.main)
  (1)Vmag mag V magnitude (phot.mag;em.opt.V)
  (1+3)B-V mag (n) []? B-V colour (phot.color;em.opt.B;em.opt.V)
  (1+3)V-I mag (n) []? V-I colour (phot.color;em.opt.V;em.opt.I)
  (1+3)Proba % (n) []? Membership probability (stat.fit.goodness)
  (1)n_Proba (char) [p] A 'p' means possible (meta.note)
  (1)Sp (char) Spectral type (src.spType)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
  (1)Notes (char) Notes (meta.note)
  (2)n_Id (char) [*] Note (meta.note)
  (2)ML  Maximum Likelihood (ML) algorithm (stat.likelihood)
  (2)dRA arcsec (n) []? Offset in right ascension (pos.eq.ra;arith.diff)
  (2)dDE arcsec (n) []? Offset in declination (pos.eq.dec;arith.diff)
  (2)ct ct/s Counts (phot.count;em.X-ray)
  (2)e_ct ct/s rms uncertainty on counts (1 sigma error) (stat.error)
  (2+3)Lx 10+22W X-ray luminosity (phys.luminosity;em.X-ray)
  (2)e_Lx 10+22W rms uncertainty on Lx (1 sigma error) (stat.error)
  (2)Lx/Lbol  X-ray over bolometric luminosity (phys.luminosity;arith.ratio)
  (2)l_HardR (char) [>] limit flag on HardR (meta.code.error)
  (2)HardR  Hardness ratio (phot.flux;arith.ratio)
  (3)Name (char) Star name (meta.id;meta.main)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
  (3)V mag V magnitude (phot.mag;em.opt.V)
  (3)Upct ct/s Upper limit on counts (phot.count;em.X-ray)

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