Fig. 3
Radial profiles of the velocity measured in 13CO and C18O J = 3–2 subtracted by the systemic velocity displayed for various azimuthal angles θ, spaced by 45°. The dashed line represents the Keplerian prescription following Eq. (1) for a 2.36 M⊙ binary system. The two dotted lines in the top central panel indicate the Keplerian velocity for a binary mass of 2.86 M⊙ and 1.86 M⊙.
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