Fraser Farrell wrote: > Nova? Sco 1997 11.0 - VSS RASNZ AI Sco sequence > > This seems to be dropping too quickly for a "real" nova. Is it a UG? This object should be indeed a nova, as reported in [vsnet-alert 977]. (http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/Mail/vsnet-alert/msg00977.html) No dwarf nova can show such a high (~3200 km/s) ejection velocity in emission lines. The observed width well corresponds to that of a fast nova. By assuming the optical maximum at the epoch of Liller's discovery, your observation suggest t3 of 3 - 4 days (!), which probably rivals the fastest nova, V1500 Cyg (Nova Cyg 1975, t3 = 3.6) and V838 Her (Nova Her 1991). It would be probably interesting to search for any periodic modulation during this nova eruption, since V1500 Cyg showed a remarkable 0.141-day modulation, which is interpreted as the "searchlight effect" (cf. Stockman et al. ApJ 232, 282). V838 Her is a neon nova, which showed deep eclipses even during the early decay. As usual, observations are strongly recommended! Regards, Taichi Kato