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Table 3
Hyperfine structure decomposition based on atomic information obtained from the associated references for the Ba II (Rutten 1978; Davidson et al. 1992), La II (Lawler et al. 2001a) and Eu II (Lawler et al. 2001b) spectral lines used in the spectrum synthesis of the M 15 giant stars.
| Wavelength (Å) | Strength | Wavelength (Å) | Strength | |
|
|
||||
| La II λ6496.898: χ = 0.321 eV, log gf = −1.410 | Ba II λ6496.898: χ = 0.604 eV, log gf = −0.407 | |||
|
|
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| 139La: | 134Ba: | |||
| 6390.455............. | –2.012 | 6496.898............. | –0.406 | |
| 6390.468............. | –2.183 | 135Ba: | ||
| 6390.468............. | –2.752 | 6496.887............. | –1.911 | |
| 6390.479............. | –2.570 | 6496.890............. | –1.212 | |
| 6390.479............. | –3.752 | 6496.895............. | –0.765 | |
| 6390.480............. | –2.390 | 6496.903............. | –1.610 | |
| 6390.489............. | –2.536 | 6496.905............. | –1.212 | |
| 6390.489............. | –3.334 | 6496.908............. | –1.212 | |
| 6390.490............. | –2.661 | 136Ba: | ||
| 6390.496............. | –3.100 | 6496.898............. | –0.406 | |
| 6390.497............. | –2.595 | 137Ba: | ||
| 6390.498............. | –3.079 | 6496.886............. | –1.911 | |
| 6390.502............. | –2.954 | 6496.889............. | –1.212 | |
| 6390.503............. | –2.778 | 6496.894............. | –0.765 | |
| 6390.506............. | –2.857 | 6496.904............. | –1.610 | |
| 6496.906............. | –1.212 | |||
| 6496.909............. | –1.212 | |||
| 138Ba: | ||||
| 6496.898............. | –0.406 | |||
|
|
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| Eu II λ6437.640: χ = 1.320 eV, log gf = −0.320 | Eu II λ6645.127: χ = 1.380 eV, log gf = + 0.120 | |||
|
|
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| 151Eu: | 151Eu: | |||
| 6437.611............. | –0.960 | 6645.071............. | –0.517 | |
| 6437.619............. | –2.191 | 6645.078............. | –1.823 | |
| 6437.629............. | –2.191 | 6645.085............. | –3.467 | |
| 6437.636............. | –1.070 | 6645.097............. | –0.593 | |
| 6437.643............. | –1.998 | 6645.104............. | –1.628 | |
| 6437.650............. | –1.998 | 6645.112............. | –3.149 | |
| 6437.656............. | –1.181 | 6645.118............. | –0.672 | |
| 6437.662............. | –1.956 | 6645.126............. | –1.583 | |
| 6437.666............. | –1.956 | 6645.133............. | –3.077 | |
| 6437.672............. | –1.287 | 6645.137............. | –0.754 | |
| 6437.676............. | –2.010 | 6645.144............. | –1.635 | |
| 6437.679............. | –2.010 | 6645.150............. | –3.245 | |
| 6437.684............. | –1.377 | 6645.152............. | –0.839 | |
| 6437.687............. | –2.207 | 6645.158............. | –1.830 | |
| 6437.689............. | –2.207 | 6645.163............. | –0.921 | |
| 6437.692............. | –1.428 | 153Eu: | ||
| 153Eu: | 6645.072............. | –1.823 | ||
| 6437.610............. | –0.960 | 6645.074............. | –0.517 | |
| 6437.613............. | –2.191 | 6645.074............. | –3.467 | |
| 6437.624............. | –2.191 | 6645.087............. | –0.593 | |
| 6437.627............. | –1.070 | 6645.089............. | –1.628 | |
| 6437.630............. | –1.998 | 6645.094............. | –3.149 | |
| 6437.634............. | –1.998 | 6645.096............. | –0.672 | |
| 6437.637............. | –1.181 | 6645.101............. | –1.583 | |
| 6437.639............. | –1.956 | 6645.104............. | –0.754 | |
| 6437.640............. | –1.956 | 6645.107............. | –3.077 | |
| 6437.641............. | –2.010 | 6645.109............. | –0.839 | |
| 6437.642............. | –1.287 | 6645.110............. | –1.635 | |
| 6437.642............. | –2.207 | 6645.113............. | –0.921 | |
| 6437.643............. | –1.428 | 6645.116............. | –1.830 | |
| 6437.644............. | –1.377 | 6645.116............. | –3.245 | |
| 6437.644............. | –2.010 | |||
| 6437.645............. | –2.207 | |||
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