Measuring the stellar wind parameters in IGR J17544-2619 and Vela X-1 constrains the accretion physics in supergiant fast X-ray transient and classical supergiant X-ray binaries

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Table 3

Parameters used in Sect. 5.

Parameters	J17544-2619	Vela X-1

P_orb (d)	4.9 ^a	8.964357 ^b
P_spin (s)	71.49^c, 11.58^d	283.532 ^b
a sini (lt-s)	–	113.89 ^b
i (deg)	–	> 73 ^e
a (10¹² cm)	2.6 ⁱ	3.5 ^j
a (R_⋆)	1.9	1.8
B (10¹²G)	1.45 ^f	2.6 ^g
ν_wind (km s^-1)	789 ^h	264 ^h
ν_orb (km s^-1)	386 ^k	281 ^k

Notes.

^(a)

Clark et al. (2009).

^(b)

Kreykenbohm et al. (2008).

^(c)

Drave et al. (2012).

^(d)

Romano et al. (2015).

^(e)

van Kerkwijk et al. (1995).

^(f)

Bhalerao et al. (2015).

^(g)

Kreykenbohm et al. (2002).

^(h)

This work.

⁽ⁱ⁾

From P_orb, total mass of the system and the 3rd Kepler’s law.

^(j)

From a sini, and the average ⟨ sini ⟩ = 0.985 over i> 73°.

^(k)

Assuming a circular orbit.

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