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J/A+A/451/835
  Properties of X-ray sources in M31/M33 (Hatzidimitriou+, 2006)
Post annotation
img(gal)
1.J/A+A/451/835/table1(c)Log of objects observed in the direction of M 31 and M 33 and derived spectral types (40 rows)
2.J/A+A/451/835/table2X-ray properties of the objects of Table 1 (33 rows)
3.J/A+A/451/835/notesIndividual notes (26 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)Gal (char) Galaxy (M 31 or M 33) (src.class.starGalaxy)
  (1+2)Seq  Sequential number (Note G1)   (meta.record)
  (1)m_Seq (char) [b] Multiplicity index on Seq (Note 1)   (meta.code.multip)
  (1+2)n_Seq (char) [a-g] Individual note (in notes.dat) (meta.note)
  (1)RAJ2000 "h:m:s" (i) Right ascension (J2000) (pos.eq.ra;meta.main)
  (1)DEJ2000 "d:m:s" (i) Declination (J2000) (pos.eq.dec;meta.main)
  (1)Bmag mag (n) USNO B magnitude (B2 in USNOB-1) (Note 2)   (phot.mag;em.opt.B)
  (1)Rmag mag (n) USNO R magnitude (R2 in USNOB-1) (Note 2)   (phot.mag;em.opt.R)
  (1)Jmag mag (n) 2MASS J magnitude (phot.mag;em.IR.J)
  (1)Date "Y:M:D" (n)Date of the Skinakas observation (time.epoch)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
  (1)ExpTime s (n) Total exposition time (time)
  (1)Nobs  (n) Number of exposure (meta.number)
  (1)SpType (char) MK spectral type of optical counterpart (meta.id.assoc;src.spType)
  (1)USNO-B1 (char) USNO-B1 I/284 identification (meta.id;meta.main)
  (1)2MASS (char) 2MASS II/246 identification (meta.id)
  (2)FX mW/m2 X-ray flux in 0.2-4.5keV band (phot.flux;em.X-ray)
  (2)e_FX mW/m2 rms uncertainty on FX (stat.error)
  (2)logFX/Fopt [-] (n) logarithm of the ratio of the X-ray flux to the optical flux (phot.flux;arith.ratio)
  (2)e_logFX/Fopt [-] (n) rms uncertainty on logFX/Fopt (stat.error)
  (2)HR1  Hardness ratio 1, HR1=(R2-R1)/(R2+R1) (Note 1)   (phot.flux;arith.ratio)
  (2)e_HR1  rms uncertainty on HR1 (stat.error)
  (2)HR2  Hardness ratio 2, HR2=(R3-R2)/(R3+R2) (Note 1)   (phot.flux;arith.ratio)
  (2)e_HR2  rms uncertainty on HR2 (stat.error)
  (3)Note (char) Note code (meta.note)
  (3)Text (char) Text of the note (meta.note)

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