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  Abundances in barred spiral galaxies (Martin+ 1994)
Post annotation
1.J/ApJ/424/599/table5Properties of H II regions in NGC 925 (82 rows)
2.J/ApJ/424/599/table6Properties of H II regions in NGC 1073 (55 rows)
3.J/ApJ/424/599/table8Properties of galaxies with abundance gradients with samples ≥10 H II regions (24 rows)

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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)Seq  Region sequential number (;meta.main)
  (1+2)log([OIII]/Hb)  Corrected [O III]/Hβ line ratio (spect.line.intensity;arith.ratio)
  (1+2)e_log([OIII]/Hb)  rms uncertainty on log([OIII]/Hb) (stat.error)
  (1+2)log([NII]/[OIII])   Corrected [N II]/[O III] line ratio (spect.line.intensity;arith.ratio)
  (1+2)e_log([NII]/[OIII])   rms uncertainty on log([NII]/[OIII]) (stat.error)
  (1+2)log([NII/Ha)   Corrected [N II/Hα line ratio (spect.line.intensity;arith.ratio)
  (1+2)e_log([NII/Ha)   rms uncertainty on log([NII/Ha) (stat.error)
  (1+2)R/Reff  Galactocentric distance corrected for inclination (pos.distance)
  (1+2)c(Hb)  Logarithmic extinction at Hβ (phys.absorption)
  (1+2)e_c(Hb)  rms uncertainty on c(Hb) (stat.error)

ALL cols
 (i)indexed column
  (1+2)O/H  O/H gradient (arith.grad;phys.abund)
  (3)NGC (char) Galaxy name (;meta.main)
  (3)Type (char) Morphological type (src.morph.type)
  (3)T  T parameter (de Vaucouleurs et al., 1976, Cat. VII/112) (src.morph.param)
  (3)i deg Inclination angle (src.orbital.inclination)
  (3)PA deg [-30/170] Position angle (pos.posAng)
  (3)Dist Mpc Distance (pos.distance)
  (3)N  Number of H II regions used to derive the O/H gradient (meta.number)
  (3)Rad25 arcsec Radius at the 25 magnitude/arcsec2 isophote in blue light (phys.angSize;src)
  (3)a arcsec Semi-major axis (phys.angSize.smajAxis;src.orbital)
  (3)b arcsec Semi-minor axis (phys.angSize;src)
  (3)Ebar   Bar ellipticity (Ebar=10(1-b/a)) (src.ellipticity)
  (3)a/Rad25   a/Rad25 ratio (src.morph.param)

ALL cols
 (i)indexed column
  (3)Slope kpc-1 Slope of the global O/H gradient normalized for the adopted distance (arith.grad;phys.abund)
  (3)r_PA  References for inclination & position angle (Note 1)   (meta.ref)
  (3)r_N  References for N and slopes of gradients (Note 1)   (meta.ref)

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