Two Possible Supernovae detected by MASTER

ATel #5609; P. Balanutsa, S. Shurpakov, D. Denisenko, V. Lipunov, E. Gorbovskoy, N. Tiurina, V. Kornilov, A. Belinski, N. Shatskiy, V. Chazov, A. Kuznetsov, A. Rufanov, V. Vladimirov, V. Yecheistov (Moscow State University, SAI), A. Parkhomenko, A. Tlatov, D. Dormidontov, V. Senik (Kislovodsk Solar Station of Pulkovo Observatory), 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), 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 29 Nov 2013; 00:02 UT
Credential Certification: Vladimir Lipunov (lipunov2007@gmail.com)

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MASTER OT J040352.13+332556.4 - Possible Supernova

MASTER-Kislovodsk auto-detection system discovered OT source at (RA, Dec) = 04h 03m 52.13s +33d 25m 56.4s on 2013-11-24.85205 UT. The OT unfiltered magnitude is 18.2m (limit 19.2m). The OT is seen in 4 images. There is no minor planet at this place. We have reference image without OT on 2012-09-21.04574 UT with unfiltered magnitude limit 19.7m. New object was confirmed on 2013-11-28.94759 UT at 18.4m (limit 19.3m).

The OT is located 10" west and 5" north of the galaxy 2MASX J04035291+3325518. We also note there is an X-ray source 1RXS J040355.0+332615 (flux 0.0446+/-0.0116 cnt/s, hardness ratios HR1=1.00+/-0.16, HR2=0.36+/-0.24, error radius 16") formally 40" away.

We suggest that MASTER OT J040352.13+332556.4 is likely a supernova. Spectral confirmation is required. The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/040352.13332556.4.png

MASTER OT J132248.38+333020.7 - Possible Supernova

MASTER-Amur auto-detection system discovered OT source at (RA, Dec) = 13h 22m 48.38s +33d 30m 20.7s on 2013-11-28.88726 UT. The OT unfiltered magnitude is 16.5m (limit 18.0m). The OT is seen in 3 images. There is no minor planet at this place. We have reference image without OT on 2012-08-19.53226 UT with unfiltered magnitude limit 18.2m.

The OT is located 7" east and 11" south of the galaxy PGC 2033541 = SDSS J132247.82+333031.9 (z=0.0387). We suggest that MASTER OT J132248.38+333020.7 is a supernova. Spectral confirmation is required. The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/132248.38333020.7.png

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