MASTER discovery of Possible Supernova in Interacting Galaxy VV 552b

ATel #5769; S. Shurpakov, D. Denisenko, V. Lipunov, E. Gorbovskoy, P. Balanutsa, 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 (MASTER team members), H. Levato, C. Saffe (ICATE), C. Mallamaci, C. Lopez, F. Podest (OAFA)
on 15 Jan 2014; 20:20 UT
Credential Certification: Vladimir Lipunov (lipunov2007@gmail.com)

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MASTER OT J110457.10+300122.0 - possible Supernova in peculiar galaxy

MASTER-Amur auto-detection system discovered OT source at (RA, Dec) = 11h 04m 57.10s +30d 01m 22.0s on 2014-01-13.66461 UT. The OT unfiltered magnitude is 16.6m (limit 17.3m). The OT is seen in 5 images. There is no minor planet at this place. We have reference image without OT on 2011-02-04.75485 UT with unfiltered magnitude limit 18.9m. The OT was confirmed at unfiltered magnitude 16.1 on MASTER-Tunka unfiltered images obtained on 2013-01-14.692 UT (limit 18.2m).

The OT is located 18" west and 16" south of the center of interacting galaxy PGC 33487 = MCG+05-26-047 = VV 552b (z=0.02889). There was another supernova SN 1955L discovered in this peculiar galaxy by M. Lovas, see IBVS 612.

There is nothing but galaxy background at this position on SDSS color-combined image to limiting magnitude ~23.5. Spectral confirmation is required. MASTER-Amur discovery, MASTER-Tunka confirmation and SDSS reference images are available at: http://master.sai.msu.ru/static/OT/110457.10300122.0.jpg

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