Table 4
Parameters of the central Mira-type star and the CSE of IK Tau.
| Parameter | Value | Reference |
|
|
||
| Distance (d) | 265 pc | a |
| Stellar radius (R∗) | 2.5 × 1013 cm | c |
| Stellar effective temperature (T∗) | 2200 K | c |
| Terminal expansion velocity (ν∞) | 18.5 km s-1 | e |
| AGB mass loss rate (Ṁ) | 8 × 10-6 M⊙ yr-1 | c |
| Gas kinetic temperature (Tkin) | T∗(r/R∗)-0.6 | c |
| Dust temperature (Td) | T∗(2r/R∗)-0.4 | b |
| Dust condensation radius (Rc) | 8 R∗ | d |
| Density of particles (n) | Ṁ/ (4πr2 ⟨ mg ⟩ vexp) | − |
Notes. The density of particles is calculated with the law of conservation of mass, where ⟨ mg ⟩ is the mean mass of gas particles (2.3 amu, after considering H2, He, and CO). (a): Hale et al. (1997); (b): Decin et al. (2006); (c): Decin et al. (2010a); (d): Gobrecht et al. (2016); (e): this work (see Sect. 5.1).
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