DM Lyr: Short? Superoutburst in October-November
The SU UMa-type dwarf nova DM Lyr experienced an outburst, as reported
by M. Simonsen on October 31. The magnitude (14.4mag) may suggest a superoutburst.
No definite superoutburst has been reported since 2000 July (vsnet-campaign-dn
2952, 2966).
In the light curve taken on Noveber 1 by K. Torii, there was no prominent
superhumps (vsnet-campaign-dn
2983). On Nov. 4, fully grown superhumps with amplitudes of 0.3-0.4
mag was observed (vsnet-campaign-dn
3000). Observations by K. Torii showed that DM Lyr was still bright
on Nov. 8, and entered the rapid decline stage on Nov. 9 (vsnet-campaign-dn
3022). This superoutburst was somewhat unusual in its short duration
(~10 d or slightly less) (vsnet-campaign-dn
2972, 2996,
3003,
3013).