The Dwarf Novae of Shortest Period
The Dwarf Novae of Shortest Period
We present observations of the dwarf novae GW Lib, V844 Her, and DI UMa. Radial velocities of Hα yield orbital periods of 0.05332 ± 0.00002 days (=76.78 minutes) for GW Lib and 0.054643 ± 0.000007 days (=78.69 minutes) for V844 Her. Recently, the orbital period of DI UMa was found …