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  Chandra observation of M67 (Van Den Berg+, 2004)
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1.J/A+A/418/509/table1(c)Catalogue of Chandra sources in the field of M67 (158 rows)
2.J/A+A/418/509/notesIndividual notes (33 rows)
3.J/A+A/418/509/table4(c)Estimated positions of faint optical counterparts (15 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+3)CX  (i) Chandra source identification (;meta.main)
  (1)T4 (char) indicates the source is mentioned in table4 (meta.ref.url)
  (1)Sig (char) Indicator of significance of detection (Note 1)   (meta.code)
  (1)Daim arcmin Distance from the telescope aimpoint (phys.veloc.ang)
  (1+3)RAJ2000 "h:m:s" (i) Right ascension (J2000) (Note 2)   (pos.eq.ra;meta.main)
  (1)e_RAs s Error in right ascension (Note 2)   (stat.error;pos.eq.ra)
  (1+3)DEJ2000 "d:m:s" (i) Declination (J2000) (2) (pos.eq.dec;meta.main)
  (1)e_DEs arcsec Error in declination (Note 2)   (stat.error;pos.eq.dec)
  (1)CRateb ct Background-corrected counts between 0.3-7keV (phot.count;em.X-ray)
  (1)e_CRateb ct Error in background-corrected counts (stat.error)

ALL cols
 (i)indexed column
  (1)CRate ct/ks Net count-rate between 0.3-7keV (Note 3)   (phot.count;em.X-ray)
  (1)B (char) [SHT] Energy band of most significant detection (Note 4)   (instr.bandpass)
  (1)HR  (n) Hardness ratio (Note 5)   (phot.flux;arith.ratio)
  (1)e_HR  (n) Error in hardness ratio (stat.error)
  (1+3)X  (n) (Candidate) ROSAT counterpart in Belloni et al. (1998A&A...339..431B), [BVM98] M 67 NN in Simbad (
  (1)Opt (char) (Candidate) optical counterpart (Note 6)   (
  (1)n_CX (char) Notes on individual sources, detailed in notes.dat file (meta.note)
  (1)dXO arcsec (n) Distance between Chandra and optical source (pos.angDistance)
  (2)Code (char) Note letter (;meta.main)
  (2)Note (char) Text of the note (meta.note)
  (3)u_X (char) Uncertainty flag for ROSAT identification (Note 1)   (meta.code.error)
  (3)n_X (char) Note on ROSAT identification (Note 2)   (meta.note)

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