Table 1
Basic information about the four sources in the sample.
| Star | RA | Dec | Variability | Spectral type | Period | Ṁ |
| [day] | [M⊙ yr-1] | |||||
|
|
||||||
| IK Tau | 03 53 28.87 | +11 24 21.7 | M | M9 | 470 | 5 × 10-6 |
| R Dor | 04 36 45.59 | −62 04 37.8 | SRb | M8e | 332/172* | 1.6 × 10-7 |
| W Hya | 13 49 02.00 | −28 22 03.5 | M | M7.5-9e | 390 | 1 × 10-7 |
| R Cas | 23 58 24.87 | +51 23 19.7 | M | M6.5-9e | 430 | 8 × 10-7 |
Notes. RA and Dec are given in J2000 co-ordinates. Variability and period information was obtained from the International Variable Star Index (VSX) database. The variability types are M = Mira variable, SRb = semi-regular variable type B. The mass-loss rates, Ṁ, are taken from Maercker et al. (2016).
Both primary and secondary mode pulsation periods are listed for R Dor (Bedding et al. 1998).
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