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Table 1.
Mira-type stars with significant period changes.
| GCVS | ⟨P⟩ | Spectral | ΔP/⟨P⟩ | K − [22] |
|---|---|---|---|---|
| [d] | type | % | [mag] | |
| MPC | ||||
| RU Tau | 588.6 | M3.5e-M6.5 | 9.5 | 1.685 |
| S Ori | 409.2 | M6.5e-M9.5e | 8.5 | 1.733 |
| RS Aql | 417.9 | M5e-M8 | 7.2 | 2.531 |
| U CMi | 411.6 | M4e | 7.0 | 2.018 |
| T Cep | 390.2 | M5-M9IIIe | 7.0 | 1.246 |
| Z Vel | 411.4 | M9e | 7.0 | 2.327 |
| T Hya | 285.7 | M3e-M9:e | 6.7 | 1.351 |
| RU Sco | 370.5 | M4/6e-M7II-IIIe | 6.7 | 2.142 |
| T CMi | 316.2 | M4Se-M8 | 6.5 | 1.867 |
| AF Car | 446.5 | M8e | 6.3 | 1.889 |
| S Sex | 259.0 | M2e-M5e | 6.0 | 1.704 |
| T Ser | 340.0 | M7e | 5.9 | 1.567 |
| W Lac | 320.2 | M7e-M8e | 5.8 | 1.955 |
| SU Her | 341.6 | M6e | 5.7 | 1.963 |
| SS Peg | 416.3 | M6e-M7e | 5.7 | 1.962 |
| S Her | 305.5 | M4.Se-M7.5,Se | 5.2 | 1.032 |
| TY Cyg | 357.0 | M6e-M8e | 5.1 | 1.868 |
| Z Sco | 345.3 | M5.5e:-M7e | 5.0 | 1.633 |
| CPC | ||||
| R Aql | 280.7 | M5e-M9IIIe | 16.7 | 2.270 |
| R Hya | 388.0 | M6e-M9eS | 15.4 | 0.839 |
| W Dra | 279.3 | M3e-M4e | 14.9 | 3.033 |
| Z Tau | 458.5 | S7.5,1e(M7e) | 11.8 | 2.633 |
| T Lyn | 409.0 | C5.2e-C7.1e | 6.4 | 2.148 |
| SPC | ||||
| T UMi | 317.3 | M4e-M6e | 38.2 | 1.212 |
| LX Cyg | 477.0 | C(N) | 22.6 | 1.602 |
| R Cen | 571.5 | M4e-M9.5 | 13.9 | 2.163 |
| BH Cru | 528.7 | C(N) | 9.5 | 1.573 |
Notes. The stars are grouped in MPC, CPC, and SPC classes.
Column 1: Denomination in GCVS; Col. 2: Mean period obtained by Fourier analysis of the time series data; Col. 3: Spectral type in GCVS; Col. 4: Relative period change; Col. 5: K − [22] colour.
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