Ten Optical Transients discovered by MASTER

ATel #5710; S. Shurpakov, D. Denisenko, P. Balanutsa, V. Shumkov, V. Lipunov, 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 (MASTER team member), H. Levato, C. Saffe (ICATE), C. Mallamaci, C. Lopez, F. Podest (OAFA)
on 31 Dec 2013; 15:37 UT
Credential Certification: Vladimir Lipunov (lipunov2007@gmail.com)

Tweet

MASTER-Kislovodsk auto-detection system discovered ten OT sources on 2013 Dec. 28-30 UT. The new objects are listed in the Table below.

MASTER OT	Date, 2013	Mag	SDSS	Type
J053020.30+585156.9	Dec. 28.823	18.5	N/A	CV
J083702.13+195207.1	Dec. 28.867	17.7	21.46r 18.98i	UV
J221252.42+465115.5	Dec. 29.654	18.2	N/A	CV
J102841.79+825340.1	Dec. 29.846	17.5	N/A	QSO
J073706.43+163339.9	Dec. 29.862	17.5	<23.5	CV
J140536.83-012210.6	Dec. 30.134	17.8	20.7r in 2.4"	PSN
J231222.36+111343.2	Dec. 30.645	18.2	21.07r 19.38i	UV
J155215.19+831424.4	Dec. 30.876	15.4	N/A	CV
J043017.84+360326.9	Dec. 30.863	17.7	N/A	CV
J103255.43-015513.6	Dec. 30.933	17.1	8"E 5"S	PSN

All reported magnitudes are in MASTER internal photometric system (unfiltered with the zero point calibrated against 0.8*R2+0.2*B2 from USNO-B1.0). Click on the object name to see the discovery and reference images. Column 4 lists the quiescent SDSS magnitudes (N/A if the corresponding area of sky is not covered by SDSS, <23.5 if the object is not detected by SDSS) or the offset from the host galaxy. Type: CV - cataclysmic variable, UV - flare star of UV Ceti type, PSN - possible Supernova.

Notes on individual objects:

MASTER OT J231222.36+111343.2 was fainter than 19.2m on 15:25:21 UT, flared to 17.4m on 15:26:48 UT, faded to 18.2m on 15:28:18 UT.

MASTER OT J155215.19+831424.4 = USNO-B1.0 1732-0032379 (15 52 15.148 +83 14 24.26 pmRA=-28 pmDE=-12 B1=20.04 R1=N/A B2=15.42 R2=N/A I=15.48). It was in outburst on 1996-06-13 blue plate and 1998-06-18 infrared plate. Comparison of 1996 June 13 and July 04 blue Palomar plates is uploaded to http://master.sai.msu.ru/static/OT/J155215+831424-DSS-B-anim.gif

There are two UV counterparts GALEX J155215.4+831424 (FUV=18.17+/-0.06 NUV=18.32+/-0.04) and GALEX J155215.5+831424 (FUV=18.73+/-0.07 NUV=18.48+/-0.04). Object is likely a dwarf nova of UGSU (SU UMa) type in superoutburst. Time-resolved photometry is encouraged.

MASTER OT J103255.43-015513.6 has been reported to CBAT TOCP as PSN J10325543-0155136. Spectroscopic confirmation is required for this object and for MASTER OT J140536.83-012210.6.

Global MASTER Robotic Net