V589 Her: A New SU UMa Star with P=0.095d
M. Simonsen detected a relatively rare outburst of V589 Her on April 4
at 14.7mag (vsnet-campaign-dn
2251). T. Kato reported a possible detection of an eclipse-like dip
in the light curve on April 5 (vsnet-campaign-dn
2257). T. Vanmunster detected modulations with 0.12mag amplitude
and ~0.1 d period, and no eclipse-like dip (vsnet-campaign-dn
2265). On April 6, T. Vanmunster revealed that the object is a new
SU UMa-type dwarf nova by his detection of superhumps with a period of
0.086 d (vsnet-campaign-dn
2269). He later revised the superhump period to be 0.0947+/-0.0005
d, which turns V589 Her in to a UGSU type dwarf nova inside the so called
'period gap' (vsnet-campaign-dn
2291). T. Kato commented that the previously reported quiescent identification
means too small outburst amplitude (~3 mag) for SU UMa stars (vsnet-campaign-dn
2270). The object rapidly faded on April 7/8 (vsnet-campaign-dn
2260, 2275,
2287).
Link:
Light curve by T. Vanmunster:
http://www.lunarpages.com/cbabelgium
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2273]