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MASTER detection of pure SN Ia candidate in NGC 5818

ATel #5699; P. Balanutsa, V. Lipunov, D. Denisenko, E. Gorbovskoy, N. Tiurina, V. Kornilov, N. Shatskiy, V. Chazov, A. Kuznetsov, A. Rufanov, V. Vladimirov, V. Yecheistov (Moscow State University, SAI), A. Parkhomenko, A. Tlatov, D. Dormidontov, V. Senik (Kislovodsk Solar Station of Pulkovo Observatory), V. Yurkov, Y. Sergienko, D. Varda, E. Sinyakov, A. Gabovich (Blagoveshchensk Educational University), K. Ivanov, S. Yazev, N. Budnev, E. Konstantinov, O. Chuvalaev, V. Poleshchuk, O. Gress (Irkutsk State University), V. Krushinsky, I. Zalozhnih, A. Popov, A. Bourdanov (Ural Federal University), P. Podvorotny, V. Shumkov, S. Shurpakov (MASTER team members), H. Levato, C. Saffe (ICATE), C. Mallamaci, C. Lopez, F. Podest (OAFA)
on 27 Dec 2013; 07:21 UT
Credential Certification: Vladimir Lipunov (lipunov2007@gmail.com)

Subjects: Optical, Supernovae, Transient

MASTER OT J145900.85+494847.6 - Supernova in NGC 5818

MASTER-Amur auto-detection system discovered OT source at (RA, Dec) = 14h 59m 00.85s +49d 48m 47.6s on 2013-12-26.79804 UT. The OT unfiltered magnitude is 16.2m (limit 17.8m). The OT is seen in 6 images. There is no minor planet at this place. We have reference image without OT on 2011-03-24.72685 UT with unfiltered magnitude limit 19.7m.

The OT is located 24" east and 29" south of the center of galaxy NGC 5818 (z=0.0262). No supernovae were found in this galaxy before. Distance modulus (m-M) is 35.37, according to HyperLeda. Thus the absolute magnitude of MASTER OT J145900.85+494847.6 is about -19.2, close to that of standard Type Ia SNe at maximum brightness.

The object has been submitted to CBAT TOCP as PSN J14590085+4948476. Spectral confirmation is required. The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/145900.85494847.6.png

List of Optical Transients discovered by MASTER

Global MASTER Robotic Net