Two Possible Supernovae discovered by MASTER

ATel #6595; V. Vladimirov, D. Denisenko, V. Lipunov, E. Gorbovskoy, N. Tiurina, P. Balanutsa, V. Kornilov, N. Shatskiy, V. Chazov, A. Kuznetsov, E. Popova (Lomonosov Moscow State University, SAI), A. Tlatov, D. Dormidontov, V. Senik, A. Parkhomenko (Kislovodsk Solar Station of Pulkovo Observatory), K. Ivanov, S. Yazev, N. Budnev, E. Konstantinov, O. Chuvalaev, V. Poleshchuk, O. Gress (Irkutsk State University), V. Yurkov, A. Gabovich, Y. Sergienko, E. Sinyakov (Blagoveshchensk Educational University), V. Krushinsky, I. Zalozhnih, A. Popov, A. Bourdanov (Ural Federal University), V. Shumkov, S. Shurpakov (MASTER team members)
on 19 Oct 2014; 18:51 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)

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MASTER OT J113930.78+251141.0 - PSN in PGC 1728170

MASTER-Kislovodsk auto-detection system discovered OT source at (RA, Dec) = 11h 39m 30.78s +25d 11m 41.0s on 2014-10-18.07538 UT. The OT unfiltered magnitude is 16.7m (limit 18.2m). The OT is seen in 3 images. There is no minor planet at this place. We have reference image without OT on 2012-03-19.91038 UT with unfiltered magnitude limit 20.2m.

The OT is located 7" east and 22" north of the center of starburst galaxy PGC 1728170 = KUG 1136+254 = SDSS J113930.26+251119.0 (z=0.0123). We note that the solar elongation during MASTER-Kislovodsk observations was 44 degrees. Spectral confirmation is required. The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/113930.78251141.0.png

MASTER OT J033640.80+355213.6 - PSN

MASTER-Tunka auto-detection system discovered OT source at (RA, Dec) = 03h 36m 40.80s +35d 52m 13.6s on 2014-10-19.62853 UT. The OT unfiltered magnitude is 18.0m (limit 20.2m). The OT is seen in 4 images. There is no minor planet at this place. We have reference image without OT on 2010-10-10.80471 UT with unfiltered magnitude limit 20.2m.

The OT is located 0" west and 7" north of the center of the anonymous galaxy USNO-B1.0 1258-0054935 (03 36 40.77 +35 52 06.8). Color-combined DSS finder chart is uploaded to http://master.sai.msu.ru/static/OT/J033640+355213-BRIR5x5.jpg (2x zoom). This area of sky in Perseus is not covered by SDSS and GALEX. Nothing is present at this position on 21 Palomar/NEAT images obtained during 8 different nights from 2002 Oct. 13 to 2003 Feb. 17. No previous outbursts were detected by Catalina Sky Survey.

Spectral confirmation is required. The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/033640.80355213.6.png

Corrigendum to ATel #6587

The name of the Possible Supernova in PGC 1901469 discovered by P. Balanutsa should be MASTER OT J000917.60+302230.1. Coordinates, offsets from the host galaxy and discovery images are correct.

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