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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 () 8 × 10-6M 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) / (4πr2mgvexp)

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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