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The massive binary HD 152218 revisited: A new colliding wind system in NGC 6231

Gosset, E.; Nazé, Y.; Rauw, G. +2 more

We present the results of an optical and X-ray monitoring campaign on the short-period massive SB2 binary HD 152218. Combining our HiRes spectroscopic data with previous observations, we unveil the contradictions between the published orbital solutions. In particular, we solve the aliasing on the period and derive a value close to 5.604 d. Our ecc…