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A Changing Wind Collision

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Figure

Fig. 1.— EPIC image of HD 5980 (the bright source at center) and its surroundings obtained by combining all XMM-Newton observations
Fig. 2.— The spectra recorded by Chandra (ObsID 1881) for HD 5980 only (in green), for HD 5980 and part of the surrounding SNR (in black - 25” circle centered on HD 5980, i.e., the region used for extracting XMM-Newton  spec-tra), and for the SNR contribut
Fig. 3.— XMM-Newton spectra extracted over a circle of 25” radius around HD 5980 and considering an external background (i.e
Fig. 4.— Left: XMM-Newton lightcurve of HD 5980 in the 1.5–10.0 keV energy band, for both MOS instruments combined
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