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Flaring Quasar and PSN discovered by MASTER

ATel #6038; P. Balanutsa, V. Lipunov, D. Denisenko, E. Gorbovskoy, N. Tiurina, V. Kornilov, N. Shatskiy, V. Chazov, A. Kuznetsov, V. Vladimirov, V. Yecheistov (Moscow State University, SAI), 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), A. Parkhomenko, A. Tlatov, D. Dormidontov, V. Senik (Kislovodsk Solar Station of Pulkovo Observatory), 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 2 Apr 2014; 10:15 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)

Subjects: Optical, Cataclysmic Variable, Quasar, Supernovae, Transient

Referred to by ATel #: 6074

MASTER OT J101037.19+715747.2 - PSN or CV

MASTER-Amur auto-detection system discovered OT source at (RA, Dec) = 10h 10m 37.19s +71d 57m 47.2s on 2014-04-01.66422 UT. The OT unfiltered magnitude is 16.7m (limit 18.7m). The OT is seen in 6 images. There is no minor planet at this place. We have reference image without OT on 2011-03-25.53644 UT with unfiltered magnitude limit 19.3m.

The OT at quiescence is identical to the object USNO-B1.0 1619-0086998 (10 10 37.455 +71 57 47.82 pmRA=0 pmDE=0 B1=N/A R1=19.61 B2=20.64 R2=19.88 I=18.29). Color-combined DSS finder chart is uploaded to http://master.sai.msu.ru/static/OT/J101037+715747-BRIR.jpg (10'x10' FOV). There is noting at this position in 1RXS, GALEX and 2MASS. This area of sky in Ursa Major is not covered by SDSS and Catalina Sky Survey.

MASTER OT J101037.19+715747.2 is either a Supernova or a cataclysmic variable in outburst. Spectral identification is required. The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/101037.19715747.2.png

MASTER OT J073948.25+174303.6 - flaring quasar

MASTER-Kislovodsk auto-detection system discovered OT source at (RA, Dec) = 07h 39m 48.25s +17d 43m 03.6s on 2014-04-01.72384 UT. The OT unfiltered magnitude is 18.1m (limit 19.0m). The OT is seen in 3 images. There is no minor planet at this place. We have reference image without OT on 2013-11-09.99657 UT with unfiltered magnitude limit 19.4m.

The OT at quiescence is identical to quasar FIRST J073948.2+174304 = NVSS 073948+174304 = SDSS J073948.23+174304.0 (g=20.83 r=20.70 i=20.77) with the photometric redshift z=2.3. There is also an UV counterpart GALEX J073948.2+174303 (FUV=22.31+/-0.16 NUV=21.48+/-0.07) and IR detection WISE J073948.24+174304.3 (W1=15.53+/-0.06 W2=14.65+/-0.07 W3=11.83+/-0.29 W4=9.02+/-0.53).

The object is showing variability from ~21m to 18.6m in Mount Lemmon Survey data: MLS J073948.2+174304. Follow up observations are required. The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/073948.25174303.6.png

List of Optical Transients discovered by MASTER

Global MASTER Robotic Net