BW Sculptoris
BW Sculptoris is WZ Sge-type dwarf nova and a candidate period bouncer. The Binary star, binary consists of a white dwarf and a brown dwarf donor that orbits the white dwarf every 78.23 minutes. BW Sculptoris is one of the closest and brightest cataclysmic variable star, cataclysmic variable stars with a brightness of Magnitude (astronomy), magnitude 16.5 and a distance of 93.3 parsec, parsecs. It also has the shortest period for any CVs known to date (as of August 2023). BW Sculptoris was discovered in 1997 by two teams. Abbott et al. discovered it with ROSAT as RX J2353.0-3852. Augusteijn & Wisotzki discovered it independently in the Hamburg/ESO survey with the La Silla Observatory, ESO 1.52 meter telescope and it was originally designated HE 2350–3908 (it received its variable star designation, BW Sculptoris, in the year 2000). Both authors noted the low mass transfer. Earlier mass ratios hinted at a low mass donor and Neustroev & Mäntynen were able to narrow down ...
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