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New Large Amplitude CV detected by MASTER

ATel #5708; P. Balanutsa, D. Denisenko, V. Lipunov, E. Gorbovskoy, N. Tiurina, V. Kornilov, N. Shatskiy, V. Chazov, A. Kuznetsov, A. Rufanov, V. Vladimirov, V. Yecheistov (Moscow State University, SAI), V. Yurkov, Y. Sergienko, D. Varda, E. Sinyakov, A. Gabovich (Blagoveshchensk Educational University), K. Ivanov, S. Yazev, N. Budnev, E. Konstantinov, O. Chuvalaev, V. Poleshchuk, O. Gress (Irkutsk State University), A. Parkhomenko, A. Tlatov, D. Dormidontov, V. Senik (Kislovodsk Solar Station of Pulkovo Observatory), V. Krushinsky, I. Zalozhnih, A. Popov, A. Bourdanov (Ural Federal University), P. Podvorotny, V. Shumkov, S. Shurpakov (MASTER team members), H. Levato, C. Saffe (ICATE), C. Mallamaci, C. Lopez, F. Podest (OAFA)
on 30 Dec 2013; 16:02 UT
Credential Certification: Vladimir Lipunov (lipunov2007@gmail.com)

Subjects: Optical, Cataclysmic Variable, Transient

MASTER OT J073208.11+064149.5 - new bright CV

MASTER-Amur auto-detection system discovered OT source at (RA, Dec) = 07h 32m 08.11s +06d 41m 49.5s on 2013-12-29.62851 UT. The OT unfiltered magnitude is 15.4m (limit 17.2m). The OT is seen in 9 images. There is no minor planet at this place. We have reference image without OT on 2011-01-22.54389 UT with magnitude limit in 'V' filter 17.3m. The object has brightened to 15.2m on the second triplet of images obtained on Dec. 29.660-29.663 UT. It was confirmed at 15.2m on 2013-12-30.63075 UT.

There is a faint blue object (magnitude about 22) marginally visible near the OT on the sum of digitized Palomar plates. Color-combined (BRIR) finder chart is uploaded to http://master.sai.msu.ru/static/OT/J073208+064149-BRIR5x5.jpg (2x zoom).

There is nothing at this position in any catalogs. Object was not visible on 6 NEAT images of 2002 Feb. 07 and 17 and on their combination (m_lim~21). This area of sky in Canis Minor is not covered by SDSS and CRTS.

Based on the blue color and outburst amplitude (~7m), MASTER OT J073208.11+064149.5 is most likely a dwarf nova of WZ Sge (UGWZ) type in superoutburst. Follow up observations are required. The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/073208.11064149.5.png

List of Optical Transients discovered by MASTER

Global MASTER Robotic Net