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/446/501
  XMM observations of sigma Ori cluster (Franciosini+, 2006)
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img(gal)
1.J/A+A/446/501/xray(c)X-ray sources with or with no known counterpart within 5" (156 rows)
2.J/A+A/446/501/nox(c)3σ upper limits for undetected late-type cluster members or candidates (tablea2) (106 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)
  (1)n_NX (char) w with at least one cluster member or candidate (tablea1) within 5", n with no known optical counterpart (tableb) within 5" (meta.note)
  (1)NX  X-ray sources running identification number, [FPS2006] NX NNN in Simbad (meta.record)
  (1)f_NX (char) [*] Note on NX (Note 1)   (meta.code)
   (ALL)RAJ2000 "h:m:s" (i) Right ascension (J2000) (pos.eq.ra;meta.main)
   (ALL)DEJ2000 "d:m:s" (i) Declination (J2000) (pos.eq.dec;meta.main)
  (1)Sign  Significance of detection (stat.likelihood;obs)
   (ALL)CR ct/ks Count rate (phot.count;em.X-ray)
  (1)e_CR ct/ks rms uncertainty on CR (stat.error)
  (1)OptID (char) Optical ID (Note G1)   (meta.id.cross)
  (1)n_OptID (char) [cde] Note on OptID (Note 2)   (meta.note)

ALL cols
    
 (i)indexed column
  (1)Dr arcsec (n) Offset between X-ray and optical source (pos.angDistance)
   (ALL)Imag mag (n) I magnitude (phot.mag;em.opt.I)
   (ALL)R-I mag (n) R-I colour index (phot.color;em.opt.R;em.opt.I)
   (ALL)I-J mag (n) I-J colour index (phot.color;em.IR;em.IR)
   (ALL)SpType (char) MK spectral type (Note 3)   (src.spType)
   (ALL)r_SpType (char) [*] *: spectral types from the literature (meta.bib)
   (ALL)logLX [Sun] (n) Unabsorbed X-ray luminosity in the 0.3-8keV band (phys.luminosity;em.X-ray)
  (1)n_logLX (char) [+] Note on X-ray luminosity (Note 4)   (meta.note)
   (ALL)C/W (char) Probable/possible CTTS or WTTS flag (Note G2)   (meta.code)
  (2)Name (char) Name (Note G1)   (meta.id;meta.main)
  (2)l_CR (char) Limit flag on CR (meta.code.error)
  (2)l_logLX (char) Limit flag on logLX (meta.code.error)

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