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Fig. 8

image

SOFIN line profiles just before (0.925) and just after (0.091) periastron, and just after apastron (0.593) have nearly the same shape. Note the deep central dip just before periastron which, when observed at phases when m1 and m2 are not resolved, mimics the m2 absorption. Note also that these phases are close to conjunctions. The profile at 0.925 is superposed on the others with dashes.

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