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PSN discovery in the Low Surface Brightness Galaxy PGC647263

ATel #7894; O. Gress, V. Lipunov (Lomonosov MSU), D. Buckley, (The South African Astronomical Observatory), E. Gorbovskoy (Lomonosov MSU), V. Kornilov, N. Tiurina, P. Balanutsa, E. Popova, V. Chazov (Lomonosov Moscow State University, Sternberg Astronomical Institute), S. Potter, M. Kotze (SAAO), V. Krushinsky (Ural Federal University), N. Budnev, K. Ivanov (Applied Physics Institute of Irkutsk State University), A. Tlatov, V. Senik, D. Dormidontov (Kislovodsk Solar Station of of the Pulkovo observatory RAS), Yu. Sergienko, V. Yurkov, A. Gabovich (Blagoveschensk State Educational University), R. Rebolo, M. Serra-Ricart (IAC), N. Lodieu, G. Israelian, L. Suarez-Andres (The Instituto de Astrofisica de Canarias)
on 9 Aug 2015; 09:42 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)

Subjects: Optical, Supernovae, Transient

MASTER OT J021038.91+533751.8 detection - SN in Low Brightness Galaxy!

MASTER-SAAO auto-detection system ( Lipunov et al., Advances in Astronomy, MASTER Global Robotic Net, 2010 ) discovered OT source at (RA, Dec) = 03h 32m 25.58s -35d 34m 25.3s on 2015-08-09.10877 UT. The OT unfiltered magnitude is 17.0m (limit 19.9m). The OT is seen in 3 images. There is no minor planet at this place. We have reference image without OT on 2014-12-25.92065 UT with unfiltered magnitude limit 20.1m.

There is PGC Galaxy near PSN. The PSN offset is 1E and 9.6S from center of the PGC647263.

This SN must be SN Ia because the very low star formation rate in the low surface brightness galaxies. This is very interesting case from the exact distance determination of the galaxy extremely dominated by dark matter in the disc. But in same momen the type of the PGC647263 is Sc. If this is normal type the type of the SN must be SNIa because its brighness with respect to host galaxy.

Spectral observations are required.

The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/033225.58-353425.3.png

"The first low-surface-brightness (LSB) galaxy to be found, Malin-1, was discovered as recently as 1987 and it now appears that up to half the galaxy population is of this type and had been missed in earlier surveys."

List of Optical Transients discovered by MASTER

MASTER Global Robotic Net