[vsnet-alert 15436] MASTER OT J173432.51+434219.4 - new UGWZ candidate

[Denis Denisenko]

Two optical transients were detected by MASTER-Amur robotic telescope
on Feb. 23. They are published in ATel #4837, see
<http://www.astronomerstelegram.org/?read=4837>.

Of most interest is the second (brighter) object MASTER OT
J173432.51+434219.4 in Hercules.

MASTER OT J173432.51+434219.4
  20130223.757  157C  MASTER-Amur
  20130223.786  159C  MASTER-Amur

There is nothing at this position on SDSS color-combined image to
limiting mag ~23. The amplitude of variability is more than 7m. This
means than MASTER OT J173432.51+434219.4 is most likely a new CV of
UGWZ (WZ Sge) type.

Photometric time series are required. The discovery and reference
images are available at:
http://master.sai.msu.ru/static/OT/173432.51434219.4.png

Denis Denisenko
Member of MASTER team at SAI MSU