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Short Bright MASTER OT114444.53 +323011.3 detection and 6-m telescope follow up deep image

ATel #3823; D. Gareeva, V. Lipunov, E. Gorbovskoy, P. Balanutsa, N. Tyurina, V. Kornilov, A. Belinski, N. Shatskiy, D. Kuvshinov, V. Chazov, A. Kuznetsov, D. Zimnukhov, M. Pruzhinskaya (Moscow State University, SAI), A. Moiseev (SAO RAS), V. Yurkov, Yu. Sergienko, E. Sinyakov (Blagoveshchensk Educational University), V. Krushinski, I. Zalozhnih, A. Popov (Ural State University), K. Ivanov, S. Yazev, N. Budnev, E. Konstantinov, O. Chuvalaev, V. Poleschuk, O. Gres,(Irkutsk State University) , A. V. Parhomenko, A. Tlatov, D. Dormidontov (Kislovodsk solar station of the Pulkovo observatory RAS), V. Shumkov, S. Shurpakov, P. Podvorotniy , (MASTER team members)
on 23 Dec 2011; 16:39 UT
Credential Certification: Vladimir Lipunov (lipunov2007@gmail.com)

Subjects: Optical, Transient

MASTER-Amur auto-detection system discovered an OT source at (RA, Dec) = 11h 44m 44.53s , +32d 30m 11s.3 on 2011-12-11 21:06:07.2 UT by double MASTER II telescopes with 180 sec exposition. The OT magnitude in R and V filter is ~16.5 m (S/N ~7.6)

We have three images, where the object is not seen (in R,V). Two of them are 4 minutes before and the one is 41 minutes later. They all have limit 17.4 (V) and 17.9 (R).

The OT is seen on two synchronous images. There are no minor planet, satellite or star at this place. There are no GRB events from Swift, Fermi, INTEGRAL, Wind-KONUS at this time. The most closest event is AGILE Trigger 11/12/11 22:17:35.00 (RA, DEC) 153.091 +11.182 one hour late.

We have taken deep R-band (Cousins) image of the field 6x6 arcmin using the SCORPIO-2 focal reducer h at the 6-m telescope (Special Astrophysical Observatory, Russia) on 2011-12-23. The exposures were started at 02:40:14 UT. The total exposure time was 1260 sec under seeing value about 1.1 arcsec. The image limit is ~25.

There is one like galaxy object "A" 6".2 from the OT. The R magnitude of the A object is about 23 mag. The linear offset dimension is 45 kpc, assuming Omega_lambda = 0.7, Hubble constant = 75 km/s/Mpc for redshift z=1.

The images are available at http://observ.pereplet.ru/images/OT114444+323011/OT114444+323011.html

Follow up observations are required.

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