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Table 2.
Stellar envelope parameters.
| CW Leo | R Leo | |
|---|---|---|
| Distance (d) | 123 pc (a) | 100 pc (b) |
| Stellar radius (R*) | 2.7 AU (c) | 1.4 AU (d) |
| Stellar effective temperature (T*) | 2330 K (c) | 2570 K (d) |
| Mass-loss rate (Ṁ) | 2 × 10−5 M⊙ yr−1(c) | 10−7 M⊙ yr−1(e) |
| Terminal expansion velocity (v∞) | 14.5 km s−1(c) | 6 km s−1(e) |
| Dust condensation temperature (Tc) | 800 K (c) | 1200 K (e) |
| Dust condensation radius (Rc) | 13.5 AU (e) | 8.7 AU (e) |
| Dust temperature exponent (qc) | 0.375 (c) | 0.34 (f) |
| Wind acceleration radius (Rw) | 20 R* (c) | − |
| Gas-to-dust mass ratio (ρg/ρd) (r > Rc) | 300 (c) | 167 (g) |
References. (a)Groenewegen et al. (2012); (b)Andriantsaralaza et al. (2022); (c)Agúndez et al. (2012); (d)Wittkowski et al. (2016); (e)Ramstedt & Olofsson (2014); (f)Marengo et al. (1997); (g)Massalkhi et al. (2020).
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