[vsnet-alert 23079] RZ LMi snapshot campaign

[Kojiguchi Naoto]

RZ LMi snapshot campaign

    We would like to call a campaign for snapshots of RZ LMi, which is an unusual dwarf nova which showed the intermediate state between ER UMa-type and novalike-type objects in 2016 (Kato et al. 2016, https://arxiv.org/abs/1609.08791). Now, this object is in a normal ER UMa-type state with a supercycle of about 20 days.

    In order to understand the evolution stage of RZ LMi, we plan to determine the orbital period of RZ LMi by ToO (target of opportunity) spectroscopy using the 3.8-m telescope SEIMEI. This spectroscopic observation needs to be performed in a faint state. Because the duration of the faint state is only one day, we need to monitor the object by the worldwide snapshot campaign. If American or Europian observer discover that RZ LMi begins to fade (<15.0V), we can observe the object in the faint state from Japan.

Coordinates: 09:51:48.91 +34:07:23.8
Magnitude range (V): 14.0-16.8
ASAS-SN light curve:
https://asas-sn.osu.edu/light_curves/c121feaa-6b30-45c9-acf1-29a930c868a8