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MASTER: 2 possible SN and new CV

ATel #7129; P. Balanutsa, O. Gress, S. Shurpakov, V. Lipunov, E. Gorbovskoy, V. Kornilov, N. Tiurina, A. Kuznetsov, V. Chazov, V. Shumkov, V. Vladimirov, D. Denisenko (Lomonosov Moscow State University, SAI), K. Ivanov, N. Budnev, S. Yazev, V. Poleshchuk, E. Konstantinov, O. Chuvalaev (Irkutsk State University), A. Tlatov, D. Dormidontov, V. Senik, A. Parkhomenko (Kislovodsk solar station of the Pulkovo observatory RAS), D. Buckley (SAAO), S. Potter, A. Kniazev, M. Kotze (South African Observatory),V. Krushinsky, I. Zalozhnih, A. Popov, A. Bourdanov (Ural Federal University), V. Yurkov, Y. Sergienko, A. Gabovich (Blagoveshchensk Educational University)
on 23 Feb 2015; 16:36 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)

Subjects: Optical, Cataclysmic Variable, Supernovae, Transient, Variables

Referred to by ATel #: 7156, 7174

MASTER OT J071016.92+333946.8 - possible SN in PGC020299

MASTER-Tunka auto-detection system ( Lipunov et al., Advances in Astronomy, MASTER Global Robotic Net, 2010 ) discovered OT at (RA, Dec) = 07h 10m 16.92s +33d 39m 46.8s on 2015-02-21.61432 UT. This possible SN is in 26"E and 5"S of PGC020299.

The SN unfiltered magnitude is 18.8m (the limit is 19.6m).

The SN is seen in 3 images. There is no minor planet at this place. We have reference image without OT on 2014-10-29.78929 UT with unfiltered magnitude limit 20.0m. Spectral observations are required.

The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/MASTERJ071016.92+333946.8.jpg

Spectral observations are required.

MASTER OT J081659.74+511233.7 - possible dwarf Nova or super luminous SN

MASTER-Tunka auto-detection system discovered OT source at (RA, Dec) = 08h 16m 59.74s +51d 12m 33.7s on 2015-02-21.64956 UT.

The OT unfiltered magnitude is 17.1m (the limit is 20.1m). The OT is seen in 4 images. There is no minor planet at this place.

We have reference image without OT on 2015-01-18.763 UT with 19.6m unfiltered magnitude limit.

There are 2 Sloan galaxies and 1 star inside 2" with Rmag>21.5 . The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/MASTER081659.74+511233.7.jpg

Spectral observations are required.

MASTER OT J113137.81-455430.8 - new CV

MASTER-SAAO auto-detection system discovered OT source at (RA, Dec) = 11h 31m 37.81s -45d 54m 30.8s on 2015-02-22.78789 UT. The OT unfiltered magnitude is 18.8m (the limit is 19.0m).

The OT is seen in 3 images. There is no minor planet at this place. There is no one source inside 5" in VIZIER database.

We have reference image without OT on 2015-02-15.01527 UT with unfiltered magnitude limit 19.7m. Spectral observations are required.

The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/113137.81-455430.8_1.png

List of Optical Transients discovered by MASTER

MASTER Global Robotic Net