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MASTER: OT discovered in Andromeda direction

ATel #8328; E. Popova, V. Lipunov, E. Gorbovskoy (Lomonosov MSU), R. Rebolo Lopez (IAC), N. Tiurina, A. Kuznetsov, P. Balanutsa, O. Gress, V. Kornilov, I. Gorbunov, D. Vlasenko, V. Vladimirov (M. V. Lomonosov Moscow State University, SAI), M. Serra-Ricart, G. Israelian, N. Lodieu, L. Suarez-Andres ( Instituto de Astrofisica de Canarias)
on 24 Nov 2015; 12:23 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)

Subjects: Optical, Request for Observations, Cataclysmic Variable, Nova, Supernovae, Transient, Variables

MASTER OT J003937.89+413026.1 discovery - optical transient in Andromeda direction

MASTER-IAC auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 00h 39m 37.89s +41d 30m 26.1s on 2015-11-23.92980 UT.

The OT unfiltered magnitude is 18.0m (limit 18.6m).

There are 7 images with OT. There is no minor planet at this place. We have reference image without OT on 2015-09-11.23682 UT with unfiltered magnitude limit 20.0m.

MASTER suggests several scenario:
1) Milky Way optical transient (CV)
2) Andromeda Nova star (magnitude and amplitude is suitable, but too far)
3) NGC205 Nova star (496.6"W and 641.3"S, also too far, but possible)
3) There is a Sloan galaxy in 4", but the offset is too far for this OT to be a Superluminous SN in this galaxy.

Spectral observations are required.

The discovery and reference images are available at http://observ.pereplet.ru/images/MASTEROTJ003937.89+413026.1.jpg

List of Optical Transients discovered by MASTER

MASTER Global Robotic Net