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We present an extended analysis of deep Chandra HETG observations of theWR+OB binary system WR 147 that was resolved into a double X-ray source (Zhekov& Park, 2010, ApJ, 709, L119). Our analysis of the profiles of strong emissionlines shows that their centroids are blue-shifted in the spectrum of thenorthern X-ray source. We find no suppressed forbidden line in the He-liketriplets which indicates that the X-ray emitting region is not located nearenough to the stars in the binary system to be significantly affected by theirUV radiation. The most likely physical picture that emerges from the entire setof HETG data suggests that the northern X-ray source can be associated with thecolliding stellar wind region in the wide WR+OB binary system, while the X-raysof its southern counterpart, the WN8 star, are result from stellar windshocking onto a close companion (a hypothesized third star in the system).

Chandra HETG Observations of the Colliding Stellar Wind System WR 147