X-ray and radio data obtained by XMM-Newton and VLA constrain the stellar wind of the magnetic quasi-Wolf-Rayet star in HD45166

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Table 4.

Magnetospheric parameters of the qWR star.

Parameter	Symbol	Unit	Value
Mass-loss rate in absence of magnetic field derived from the XADM model	Ṁ(B = 0)	M_⊙ yr⁻¹	5.1×10⁻⁹
Terminal wind velocity theoretically predicted in absence of magnetic field	$V_{\infty}^{th}$ ${V_{\infty }^{\rm th}}$ ^(†) $\equiv V_{\infty}^{fast}$ $\equiv {V_{\infty }^{\rm fast}}$	km s⁻¹	2650
Wind confinement parameter	η_*	–	20 500
Alfvén radius	R_A	R_*	12.3
Mass-loss rate actually lost from the magnetic qWR	Ṁ	M_⊙ yr⁻¹	≈3×10⁻¹⁰
Radial wind velocity measured from spectroscopy	V_∞(obs.) ^(††) $\equiv V_{\infty}^{slow}$ $\equiv {V_{\infty }^{\rm slow}}$	km s⁻¹	1200
Kepler radius	R_K	R_*	≈150

Notes.

^(†)

Vink (2017);

^(††)

Willis et al. (1989).

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