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Table 1:

Atomic parameters of the iron lines.
Species $\lambda$ $\chi$l log $\it {gf}$ EW (mÅ) EW (mÅ)
        CoRoT-2 CoRoT-4
Fe  I 5044.22 2.85 -2.043 88.0 66.7
  5198.72 2.22 -2.176   94.5
  5242.49 3.63 -1.130 102.3 84.1
  5322.05 2.28 -2.900 77.2 56.3
  5638.27 4.22 -0.809 94.1 77.6
  5731.77 4.26 -1.124 73.0 53.2
  5806.73 4.61 -0.893 70.3 51.9
  5852.22 4.55 -1.185 52.2 36.2
  5855.08 4.61 -1.530 26.1  
  5856.09 4.29 -1.568 39.3  
  6027.06 4.08 -1.190 80.0 61.6
  6056.01 4.73 -0.500 92.2 73.2
  6079.01 4.65 -1.010   39.7
  6089.57 5.02 -0.884 45.1 36.5
  6151.62 2.18 -3.300 70.6 40.2
  6157.73 4.07 -1.240 76.5 61.3
  6159.38 4.61 -1.860    
  6165.36 4.14 -1.500 53.3 42.0
  6180.21 2.73 -2.635 71.7 54.0
  6188.00 3.94 -1.635 58.7 45.6
  6200.32 2.61 -2.400 98.0 65.9
  6213.44 2.22 -2.592 102.0 76.2
  6226.74 3.88 -2.070 33.6  
  6229.24 2.84 -2.880 45.5  
  6265.14 2.18 -2.574 111.0 77.0
  6270.23 2.86 -2.588 68.5 49.0
  6380.75 4.19 -1.320 66.9 51.9
  6392.54 2.28 -3.933 25.1  
  6498.94 0.96 -4.632 63.5 38.0
  6627.55 4.55 -1.480 32.1  
  6703.57 2.76 -3.027 43.1 31.3
  6726.67 4.61 -1.050 51.4  
  6750.16 2.42 -2.621 93.2 75.4
  6752.71 4.64 -1.230 47.0 36.7
  6786.86 4.19 -1.900 30.0 21.0
Fe  II 5234.63 3.22 -2.238 96.4 100.8
  5991.38 3.15 -3.529   47.9
  6084.11 3.20 -3.767   33.3
  6149.25 3.89 -2.726 44.9 53.7
  6247.56 3.89 -2.342 64.5 72.2
  6369.46 2.89 -4.134 23.7  
  6416.93 3.89 -2.640 43.1 57.0
  6432.69 2.89 -3.564 44.9 52.9
  7711.73 3.90 -2.538 49.8  

Notes. Column 1: element; Col. 2: wavelength (in Å ); Col. 3: excitation energy of the lower energy level in the transition (in eV); Col. 4: oscillator strengths based on an inverse solar analysis.; Col. 5: EW for CoRoT-2; Col. 6: EW for CoRoT-4.


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