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Table 1

CQ Cep parameters.

Parameter

P orb / d 1.64124
WR/M yr-1 1.1–3.4 × 10-5 Ref: 2, 3, 4
WR/M yr-1 5 × 10-5 Ref: 5

D97 M95 HH97

i / deg 68.8 (0.6) 78–65 72.5 (0.5)
a / R 20.4 (0.3) .... (22.1)b
a WR / R 10.33 .... (9.8)b
a O9 / R 10.03 .... (12.2)b
e 0.034 (0.008) 0.034(0.008) 0.010 (0.007)
M WR / M 20.8 (2.3) 15–19 29.9 (3.2)
M O9 / M 21.4 (1.6) 18–23 24.1(1.3)
R WR / R 8.2(0.2)a 2–10 8.8(0.2)
R O9 / R 8.23(0.2)a <10 7.9(0.2)

R RL−W / R 1 7.7 7.4:: 8.1
R RL−O9 / R 1 7.8 8.1:: 7.4

Notes.

(a)

The values of RWR and RO9 given by D97 in their Table 3 appear to be the average of the deformed surface radii in the “back” and the “pole”, where back corresponds to the hemisphere opposite that facing the companion. These authors list: , , and ;

(b)

computed here.

Reference. (1) Computed using Eggleton (1983); (2) Cherepashchuk (1982); (3) Howarth & Schmutz (1992); (4) Nishimaki et al. (2008); (5) Hamann & Koesterke (1998); D97: Demircan et al. (1997); HH97: Harries & Hilditch (1997); M95: Marchenko et al. (1995).

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