Table 6. Stars with mass loss rates determined from Lyα absorption. Spectral types and mass loss rates taken from Wood et al. (2005). Ages determined via gyrochronology (tgyro), chromospheric activity (tchromo) and isochrones ( tiso) were taken from Barnes (2007). Other ages (tother) are taken from the references in the last column ([1] Eggenberger et al. (2004); [2] Soderblom and Mayor (1993); [3] King et al. (2010); [4] Eggen (1996); [5] DeWarf et al. (2010); [6] Eggenberger et al. (2008); [7] Montes et al. (2001)).
Star | Spectral type |
| tgyro (Gyr) | tchromo (Gyr) | tiso (Gyr) | tother (Gyr) | Method & Ref. |
|---|---|---|---|---|---|---|---|
α Cen | G2V+K0V | 2 | 4.4±0.5 | 5.62 | 7.84 | 6.5±0.3 | Astroseismology [1] |
61 Vir | G5V | 0.3 | 4.2±0.7 | 5.6 | 8.96 | — | — |
ξ Boo | G8V+K4V | 5 | 0.23±0.02 | 0.23 | <0.76 | 0.3 | UMa moving group [2] |
ϵ Ind | K5V | 0.5 | 1.0±0.1 | — | — | 4±0.3 | Age of BD companion [3] |
61 Cyg A | K5V | 0.5 | 2.0±0.2 | 2.36 | <0.44 | 6±2 | 61 Cyg moving group [4] |
36 Oph | K1V+K1V | 15 | 0.59±0.07 | 1.14 | — | 2 | Activity-rotation [5] |
70 Oph | K0V+K5V | 100 | 1.3±0.2 | 1.09 | — | 6.2±1 | Astroseismology [6] |
ϵ Eri | K1V | 30 | 0.44±0.05 | 0.66 | <0.6 | 0.65 | Hyades supercluster [5] |
Proxima Cen | M5.5V | ≤0.2 | 4.4±0.5 | 5.62 | 7.84 | 6.5±0.3 | Ages adopted from α Cen |
EV Lac | M3.5V | 1 | — | — | — | 0.3 | UMa moving group [7] |
