SuWt2 has been found to contain a double lined and eclipsing binary system. Surprisingly, both components appear to be A-type stars with masses of about 3 M⊙ moving in essentially circular orbits with a period of 4.9 days. We see no indications of a hotter component in the optical or IUE spectra. We discuss the possibility that this is a triple system.
Deep Hα + [N II] images show the nebula to be an inclined ring (≃600 to the line of sight) while spectra show anomalous line ratios (eg I([N II] 6584) ≥≥ I(Hα)) which maybe indicative of recombination in a changing radiation field. Further modeling is ongoing.