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MASTER-IAC: high amplitude OT on M33 direction and unknown nature OT.

ATel #8407; E. Popova, V. Lipunov, E. Gorbovskoy, P. Balanutsa, N. Tiurina, V. V. Chazov, V. Kornilov, A. Kuznetsov, I. Gorbunov, V. Vladimirov (M. V. Lomonosov MSU, SAI),R. Rebolo, M. Serra-Ricart, N. Lodieu, G. Israelian (The Instituto de Astrofisica de Canarias), N. Budnev, O. Gress, K. Ivanov (Irkutsk State University, Applied Physics Institute)
on 14 Dec 2015; 16:05 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)

Subjects: Cataclysmic Variable, Nova, Transient

Referred to by ATel #: 8416

MASTER OT J013347.25+302653.3 - CV in our Galaxy or Nova in M33

MASTER-IAC auto-detection system discovered OT source at (RA, Dec) = 01h 33m 47.25s +30d 26m 53.3s on 2015-12-14.03184 UT. The coordinate error is about 1.5 arcsec. The OT unfiltered magnitude is 16.8m (limit 20.4m). The OT is seen in 3 images. There is no minor planet at this place. We have reference image without OT on 2015-11-16.03198 UT with unfiltered magnitude limit 20.5m.

There is Star in Catalogue of variable point sources in M33 at RA, DEC = 01 33 47.25 +30 26 54.7 inside our error box with magnitude R ~ 23.

Spectral observations are required.

We reobserved this object at MASTER-Tunka on 2015-12-14.6554 with unfiltered magnitude 19.2 (limit = 20.2)

The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/013347.32302651.6.png

MASTER OT J005058.67-020914.0 - ?

MASTER-IAC auto-detection system discovered OT source at (RA, Dec) = 00h 50m 58.67s -02d 09m 14.0s on 2015-12-13.98775 UT. The OT unfiltered magnitude is 19.2m (limit 19.7m). The OT is seen in 3 images. There is no minor planet at this place. There is no object in any catalogue.

We have reference image without OT on 2015-10-13.09312 UT with unfiltered magnitude limit 20.6m.

Follow up observations are required.

The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/005058.67-020914.0.png

List of Optical Transients discovered by MASTER

MASTER Global Robotic Net