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Table 4
Spectral lines used for magnetic Doppler imaging.
| Ion | λ (Å) | Ei (eV) |
|
log gf | log gfcor |
|
|
|||||
| Cr ii | 4242.364 | 3.871 | 1.182 | −1.170 | −0.681 |
| Cr ii | 4252.632 | 3.858 | 1.205 | −1.810 | −1.931 |
| Cr ii | 4284.188 | 3.854 | 0.522 | −1.670 | −1.861 |
| Fe ii | 4491.397 | 2.856 | 0.425 | −2.700 | −2.819 |
| Fe ii | 4508.280 | 2.856 | 0.505 | −2.250 | −2.670 |
| Fe ii | 4520.218 | 2.807 | 1.345 | −2.600 | −1.741 |
| Cr ii | 4592.049 | 4.074 | 1.205 | −1.221 | −1.423 |
| Cr ii | 4634.070 | 4.072 | 0.510 | −0.990 | −1.113 |
| Cr ii | 4812.337 | 3.864 | 1.498 | −1.960 | −1.813 |
| Fe ii | 4923.921 | 2.891 | 1.700 | −1.320 | −1.517 |
| Nd iii | 4927.488 | 0.461 | 1.180 | −0.800 | −0.800 |
| Fe ii | 5018.436 | 2.891 | 1.935 | −1.220 | −1.342 |
| Nd iii | 5050.695 | 0.296 | 1.170 | −1.060 | −1.575 |
| Si ii | 5978.930 | 10.074 | 1.167 | 0.040 | 0.223 |
| Nd iii | 6145.068 | 0.296 | 0.990 | −1.330 | −1.363 |
| Nd iii | 6327.265 | 0.141 | 0.935 | −1.410 | −0.988 |
| Si ii | 6347.109 | 8.121 | 1.167 | 0.170 | 0.070 |
| Si ii | 6371.371 | 8.121 | 1.333 | −0.040 | −0.123 |
Notes. The columns give the ion designation, central wavelength, excitation potential of the lower atomic level, effective Landé factor, oscillator strength from the VALD data base, and corrected oscillator strength.
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