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ASCA BWEclipse Spectrum of Centaurus X-3:

Emission and Absorption by Iron    

A 14,000s exposure in one SIS camera taken during the eclipse of the high mass X-ray binary Cen X-3. The iron line region shows three prominent iron K emission lines from cold iron (6.4 keV), He-like iron (6.7 keV), and Hydrogen- like iron (6.9 keV). There is also a deep edge at 7.1 keV from cold iron.

 
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