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VizieR

Simple TargetList Of TargetsFast Xmatch with large catalogs or Simbad
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J/ApJS/177/465
  X-ray variability in NGC 6946, NGC 4485/90 (Fridriksson+, 2008)
ReadMe+ftp
2008ApJS..177..465F
Similar Catalogs
Post annotation 		img(gal)
1.J/ApJS/177/465/ngc6946(c)Basic and spectral properties for NGC 6946 (450 rows)
2.J/ApJS/177/465/ngc4485(c)Basic and spectral properties for NGC 4485 (114 rows)
3.J/ApJS/177/465/table9Chandra variability properties for NGC 6946 sources (90 rows)
4.J/ApJS/177/465/table10Chandra variability properties for NGC 4485/4490 sources (38 rows)

Simple ConstraintList Of Constraints
 
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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)
   (ALL)[FHL2008]  Number identification (meta.id)
   (ALL)CXOU (char) Source designation (HHMMSS.s+DDMMSS) (meta.id;meta.main)
  (1+2)RAJ2000 deg (i) Right ascension in decimal degrees (J2000) (pos.eq.ra;meta.main)
  (1+2)DEJ2000 deg (i) Declination in decimal degrees (J2000) (pos.eq.dec;meta.main)
  (1+2)SN  Signal-to-noise ratio (Note 1)   (stat.snr)
  (1+2)ObsID  Observation ID number (meta.id)
  (1+2)l_Flux (char) Limit flag on Flux (Note 2)   (meta.code.error;phot.flux)
  (1+2)Flux ph/ks/m2 (n) Photon flux in the 0.3-7keV band (Note 2)   (phot.flux;em.X-ray.medium)
  (1+2)E_Flux ph/ks/m2 (n) Positive error of Flux (Note 2)   (stat.error;stat.max)
  (1+2)e_Flux ph/ks/m2 (n) Negative error of Flux (Note 2)   (stat.error;phot.flux)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (1+2)Fco ph/ks/m2 Photon flux in the co-added exposure (Note 2)   (phot.flux;em.X-ray)
  (1+2)e_Fco ph/ks/m2 Error on Fco (Note 2)   (stat.error)
  (1+2)XLum 10+30W Average X-ray luminosity in the 0.3-7keV band (Note 3)   (phys.luminosity;em.X-ray)
  (1+2)XLumax 10+30W Maximum of X-ray luminosity in the 0.3-7keV band (Note 4)   (phys.luminosity;em.X-ray)
   (ALL)Comm (char) Comments (Note 5)   (meta.note)
  (1+2)HR1  (n) HR1 (Note 1)   (meta.note)
  (1+2)e_HR1  (n) Error on HR1 (stat.error)
  (1+2)HR2  (n) HR2 (Note 2)   (meta.note)
  (1+2)e_HR2  (n) Error on HR2 (stat.error)
  (1+2)HR1co  (n) HR1 for combined observations (Note 3)   (meta.note)
  (1+2)e_HR1co  (n) Error on HR1co (stat.error)
  (1+2)HR2co  (n) HR2 for combined observations (meta.note)
  (1+2)e_HR2co  (n) Error on HR2co (stat.error)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (3)K-S1043  (n) K-S test for short-term flux variability for obs. ID 1043 (Note G1)   (stat.probability;src.var)
  (3)K-S4404  (n) K-S test for short-term flux variability for obs. ID 4404 (Note G1)   (stat.probability;src.var)
  (3)K-S4631  (n) K-S test for short-term flux variability for obs. ID 4631 (Note G1)   (stat.probability;src.var)
  (3)K-S4632  (n) K-S test for short-term flux variability for obs. ID 4632 (Note G1)   (stat.probability;src.var)
  (3)K-S4633  (n) K-S test for short-term flux variability for obs. ID 4633 (Note G1)   (stat.probability;src.var)
  (3+4)Svar  Significance parameter for long-term flux variability (Note G2)   (stat.probability;src.var)
  (3+4)l_R (char) Limit flag on R (meta.code.error)
  (3+4)R  Long-term flux variability (Note G3)   (phot.flux;arith.ratio)
  (3+4)SHR1  Significance parameter for the variability in the Hardness Ratio 1 (Note G4)   (stat.probability;src.var)
  (3+4)SHR2  Significance parameter for the variability in the Hardness Ratio 2 (Note G5)   (stat.probability;src.var)
  (4)K-S1579  (n) K-S test for short-term flux variability for obs. ID 1579 (Note G1)   (stat.probability;src.var)
  (4)K-S4725  (n) K-S test for short-term flux variability for obs. ID 4725 (Note G1)   (stat.probability;src.var)
  (4)K-S4726  K-S test for short-term flux variability for obs. ID 4726 (Note G1)   (stat.probability;src.var)

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