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Zeta Orionis: An O-star in the belt of Orion, the Hunter. Caption: The X-ray spectrum of the O-star Zeta Orionis taken by NASA's Chandra X-ray Observatory reveals clues about the structure of massive stars. Chandra's spectral data suggest that such massive O-stars may have magnetic loop structures on their surfaces similar to those found on the Sun. The color-coded CCD image to the upper right shows that Zeta Orionis is a binary star system. The HETG spectra was taken from the larger "A" component. Scale: Image is 27 arcsec on a side. Chandra X-ray Observatory ACIS /HETG Image |
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