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A Spectroscopic Study of HL Canis Majoris

We present optical spectroscopy of the dwarf nova HL Canis Majoris over a span of 4 years. The observations were made during standstill, outburst, and quiescence. We determine an orbital period of 0.2167867 ± 0.0000017 days, based on radial velocities determined from Hα, Hβ, and He i λ 5876 emission. We also present equivalent widths of the spectral features in outburst and in quiescence.