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V844 Herculis: An Exceptional Intermediate Polar Hiding in an Ordinary Dwarf Nova
We present time-series spectroscopy of the SU UMa-type dwarf nova V844 Her during quiescence. We discover high-velocity Balmer and He I emission features modulated at a period of 29.3$\pm$0.1 minutes. The spectroscopic periodicity is identical to the photometric period detected only during superoutb
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