Hot Gas in the Circumstellar Bubble S 308


S 308 is a circumstellar bubble blown by the WN4 star HD 50896. It is one of the only two single-star bubbles that show detectable diffuse X-ray emission. We have obtained XMM-Newton EPIC observations of the northwest quadrant of S 308. The diffuse X-ray emission shows a limb-brightened morphology, with a clear gap extending from the outer edge of the… (More)


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@inproceedings{ChuHotGI, title={Hot Gas in the Circumstellar Bubble S 308}, author={You-Hua Chu and M. A. Flores Guerrero and Robert A. Gruendl and Guillermo Gar{\'c}ıa-Segura and Heinrich J. Wendker} }