Does the Wolf-Rayet binary CQ Cephei undergo sporadic mass transfer events?

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Table 4

Scenario 2: the O star is the RLO donor.

\| ṁ₂ \|	Ṗ(nominal)	Ṗ(3 × nominal)
10^-5M_⊙/yr	s yr^-1	s yr^-1

D97
0.0	+0.13	+0.4
10.0	+0.08	+0.3
40.0	−0.1	+0.2
500.0	−2.7	−2.4
1500.0	−8.4	−8.2

M95^a
0.0	+0.15	+0.45
10.0	−0.3	+0.02
40.0	−1.6	−1.3
100.0	−4.1	−3.8
250.0	−10.5	−0.2

Notes.| ṁ₂ | is the mass-transfer rate via RLO. Calculations of Ṗ are performed for a WR wind mass-loss rate yr^-1 (Col. 2) and 6 × 10^-5M_⊙ yr^-1 (Col. 3).

^(a)

We adopt average masses for the range given by M95: m₁ = 17.0 M_⊙ and m₂ = 20.5 M_⊙; the D97 masses are m₁ = 20.8 M_⊙ and m₂ = 21.4 M_⊙.

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