MASTER: possible superluminous SN, QSO flare and new dwarf novae outbursts

ATel #9302; P. Balanutsa, O. Gress, E. Popova, V. Lipunov (Lomonosov MU), D. Buckley (SAAO), R. Rebolo Lopez, M. Serra-Ricart (IAC), A. Tlatov (KSS, Pulkovo Observatory), E. Gorbovskoy, N. Tyurina, A. Kuznetsov, V. Kornilov, D. Kuvshinov, D. Vlasenko, V. Shumkov, S. Shurpakov (Lomonosov Moscow State University, SAI), S. Potter, A. Kniazev (South African Astronomical Observatory), V. Senik, D. Dormidontov, A. V. Parhomenko (Kislovodsk Solar Station of the Pulkovo Observatory), K. Ivanov, N. Budnev (API, Irkutsk State University), V. Yurkov, Yu. Sergienko, A. Gabovich (Blagoveschensk Educational State University)
on 2 Aug 2016; 16:07 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)

Tweet

MASTER OT J225939.54+020859.6 discovery - poss. superluminous SN in Sloan galaxy
MASTER-IAC auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L )discovered OT source at (RA, Dec) = 22h 59m 39.54s +02d 08m 59.6s on 2016-08-02.06248 UT.
The OT unfiltered magnitude is 17.8m (lim=20.1m). The OT is seen in 4 images. We have reference image without OT on 2016-06-11.13216 UT with mlim=20.6m.
There is SDSS225939.63+020858.8 galaxy in 1.7" with rmag=20.399, in this case our OT is SLSN
And there is SDSS225937.40+020909.4 gal. in 33.4" with rmag=16.79, => can be its SN
The discovery and reference images are http://master.sai.msu.ru/static/OT/225939.54020859.6.png

MASTER OT J185345.80-532209.9 discovery - new OT, possibly dwarf nova outburst with Ampl>4.4m
MASTER-SAAO auto-detection system discovered OT source at (RA, Dec) = 18h 53m 45.80s -53d 22m 09.9s on 2016-08-01.84988 UT.
The OT unfiltered magnitude is 17.6m (lim=20.2m).
The OT is seen in 4 images. There is no minor planet at this place. We have reference image without OT on 2016-04-15.00345 UT with m_lim=20.5m.
There is no any sources in VIZIER, it means 22m POSS lim and current outburst amplitude more then 4.4m
The discovery and reference are http://master.sai.msu.ru/static/OT/185345.80-532209.9.png

MASTER Ot J205158.57+153622.6 detection - Sloan QSO flare
MASTER-IAC auto-detection system discovered OT source at (RA, Dec) = 20h 51m 58.57s +15d 36m 22.6s on 2016-07-29.00774 UT.
The OT unfiltered magn.is 18.4m (lim=19.6m). The OT is seen in 4 images. There is candidate to QSO in SDSS DR10 catalogue of candidate quasars (Brescia+, 2015) with red r'=21.068. We have ref.image without OT on 2015-10-14.83750 UT with mlim=20.2m.
The discovery and reference im. http://master.sai.msu.ru/static/OT/205158.57153622.6.png

MASTER OT J160419.56+392813.1 discovery - new OT, pos. dwarf nova outburst with Ampl>3.9m
MASTER-Kislovodsk auto-detection system discovered OT source at (RA, Dec) = 16h 04m 19.56s +39d 28m 13.1s on 2016-07-28.83310 UT.
The OT unfiltered magnitude is 18.1m (lim=19.5m).
The OT is seen in 2 images. We reobserved it in MASTER-Amur on 2016-08-01 14:21:04 with m_OT=18.2 .
We have reference image without OT on 2016-02-09.02851 UT with m_lim=19.9.There is no any source in VIZIER known befor.
The discovery and reference images http://master.sai.msu.ru/static/OT/MASTEROTJ160419.56+392813.1.jpg

MASTER OT J190942.21-560124.0 discovery - new OT, dwarf nova outburt with Ampl>3.8m
MASTER-SAAO auto-detection system discovered OT source at (RA, Dec) = 19h 09m 42.21s -56d 01m 24.0s on 2016-08-01.85499 UT.
The OT unfiltered magnitude is 18.2m (limit 20.3m).
The OT is seen in 4 images. We have reference image without OT on 2016-05-14.95916 UT with m_lim=19.5m.
There is no optical sources in VIZIER database (22m POSS limit), but there is GALEX source in 1.8", that means the accretion, i.e. UG type of OT.
The discovery and reference im. http://master.sai.msu.ru/static/OT/190942.21-560124.0.png

MASTER OT J183854.09-543958.4 discovery - new dwarf nova outburst, ampl>5.1m
MASTER-SAAO auto-detection system discovered OT source at (RA, Dec) = 18h 38m 54.09s -54d 39m 58.4s on 2016-08-01.87297 UT.
The OT unfiltered magnitude is 16.9m (limit 20.1m).
The OT is seen in 5 images. We have reference image without OT on 2016-06-07.90855 UT with m_lim=20.1m.
There is no optical sources in VIZIER(22m upper lim), but GALEX source => dwarf nova.
The discovery and reference im http://master.sai.msu.ru/static/OT/183854.09-543958.4.png

Spectral observations are required for all OT

MASTER Global Robotic Net