Table 14.
Observed and theoretical periods of the asteroseismological model for RX J2117 [M⋆ = 0.565 M⊙, Teff = 162 992 K, log(L⋆/L⊙) = 3.373].
 |
ℓO | Πk | ℓ | k | m | δΠk |  |
Unstable |
|---|---|---|---|---|---|---|---|---|
| (s) | (s) | (s) | (10−11 s/s) | |||||
| 692.267 | 1 | 689.975 | 1 | 30 | 0 | 2.292 | −2.561 | No |
| 712.975 | 1 | 712.003 | 1 | 31 | 0 | 0.972 | −4.775 | No |
| 733.948 | 1 | 732.780 | 1 | 32 | 0 | 1.168 | −5.217 | No |
| 757.354 | 1 | 754.864 | 1 | 33 | 0 | 2.490 | −6.022 | Yes |
| 778.921 | 1 | 777.318 | 1 | 34 | 0 | 1.603 | −4.702 | Yes |
| 799.495 | 1 | 798.832 | 1 | 35 | 0 | 0.663 | −2.655. | Yes |
| 817.375 | 1 | ⋯ | 1 | 36 | −1 | ⋯ | ⋯ | ⋯ |
| 821.105 | 1 | 820.614 | 1 | 36 | 0 | 0.491 | −2.508 | Yes |
| 824.880 | 1 | ⋯ | 1 | 36 | +1 | ⋯ | ⋯ | ⋯ |
| 843.692 | 1 | 843.310 | 1 | 37 | 0 | 0.382 | −5.222 | Yes |
| 885.736 | 1 | 887.005 | 1 | 39 | 0 | −1.269 | −7.721 | Yes |
| 902.761 | ? | 902.523 | 2 | 70 | 0 | 0.238 | −7.666 | Yes |
| 907.489 | 1 | 907.453 | 1 | 40 | 0 | 0.036 | −7.849 | Yes |
| 951.750 | 1 | 953.041 | 1 | 42 | 0 | −1.291 | −4.485 | Yes |
| 966.785 | 1 | ⋯ | 1 | 43 | −1 | ⋯ | ⋯ | ⋯ |
| 972.073 | 1 | 974.580 | 1 | 43 | 0 | −2.507 | −7.938 | Yes |
| 994.387 | 1 | 994.737 | 1 | 44 | 0 | −0.350 | −10.487 | Yes |
| 1016.467 | 1 | 1016.873 | 1 | 45 | 0 | −0.406 | −10.678 | Yes |
| 1031.978 | 1 | ⋯ | 1 | 46 | −1 | ⋯ | ⋯ | ⋯ |
| 1038.120 | 1 | 1039.311 | 1 | 46 | 0 | −1.191 | −11.222 | Yes |
| 1044.041 | 1 | ⋯ | 1 | 46 | +1 | ⋯ | ⋯ | ⋯ |
| 1058.026 | 1 | 1060.183 | 1 | 47 | 0 | −2.157 | −8.262 | Yes |
| 1103.292 | 1 | 1103.398 | 1 | 49 | 0 | −0.106 | −12.206 | Yes |
| 1124.156 | 1 | 1125.203 | 1 | 50 | 0 | −1.047 | −14.094 | Yes |
| 1131.200 | 1 | ⋯ | 1 | 51 | +1 | ⋯ | ⋯ | ⋯ |
| 1146.346 | 1 | 1146.771 | 1 | 51 | 0 | −0.425 | −11.240 | Yes |
| 1189.956 | 1 | 1188.768 | 1 | 53 | 0 | 1.188 | −8.643 | Yes |
| 1350.870 | ? | 1345.193 | 2 | 105 | 0 | 5.677 | −9.485 | No |
| 1557.010 | 1 | 1559.013 | 1 | 70 | 0 | −2.003 | −13.293 | No |
| 1976.060 | ? | ⋯ | 1 | 90 | −1 | ⋯ | ⋯ | ⋯ |
| 1997.760 | ? | 1998.018 | 1 | 90 | 0 | −0.258 | −8.917 | No |
Notes. Periods are in seconds, and rates of period change (theoretical) are in units of 10−12 s/s. 
represents the period differences, ℓ the harmonic degree, k the radial order, and m the azimuthal index. The last column gives information about the pulsational stability or instability nature of the modes.
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