MASTER: QSO/CV bright outbursts
ATel #13792; T. Pogrosheva, V. Lipunov, V. Kornilov, E. Gorbovskoy, N. Tiurina, K. Zhirkov, O. Gress, P. Balanutsa, I. Gorbunov, A. Kuznetsov, V. Vladimirov, A. Chasovnikov, D. Vlasenko, F. Balakin, D. Zimnukhov, D. Cheryasov, V. Senik, E. Minkina, V. Grinshpun, V. Shumkov, V. Topolev, A. Pozdnyakov, Ya. Kechin (Lomonosov MSU), D. A. H. Buckley (SAAO), R. Podesta, F. Podesta, C. Francile (OAFA), H. Levato (SJNU), N. M. Budnev(ISU, API), A. Gabovich, Yu. Sergienko(BSPU), R. Rebolo, M. Serra-Riscart, (IAC), A. Tlatov, D. Dormidontov(Kislovodsk Solar Station of the Pulkovo Observatory)
on 8 Jun 2020; 22:08 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)
Subjects: Optical, Request for Observations, Cataclysmic Variable, Quasar, Transient, Variables
MASTER OT J170422.65-651532.6 detection - outburst with ampl>5m
MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L )
discovered OT source at (RA, Dec) = 17h 04m 22.65s -65d 15m 32.6s on 2020-06-06.92183 UT.
The OT unfiltered magnitude is 15.2m
(mlim=18.3).
The OT is seen in 12 images. m_OT=15.0 at 2020-05-31 20:14:18UT.
We have reference image on 2020-05-22.00396 UT with unfiltered mlim= 20.0m.
There is optical source in USNO-B1(B2=18.0,R2=19.6), also this source is a QSO candidate in (Bailer-Jones+, 2019) in VIZIER database
Spectral observations are required.
The discovery and reference images are available at:
http://master.sai.msu.ru/static/OT/170422.65-651532.6_1.png
AT2020lzb
MASTER OT J160257.23-683645.6 detection - outburst with ampl>5m
MASTER-OAFA auto-detection system
discovered OT source at (RA, Dec) = 16h 02m 57.23s -68d 36m 45.6s on 2020-06-07.14674 UT.
The OT magnitude in unfiltered is 16.8m
(mlim=17.5).
The OT is seen in 2 images. There is no minor planet at this place.
We have reference image on 2020-06-02 03:38:01Ut with mlim=18.6, on 2020-02-06.35356 UT with unfiltered 18.5m.
There is no optical sources in USNO (GSC and Gaia presents),that gices 22m limit in history and more then 5.2 of current outburst amplitude.
This source is also a QSO candidate from (Bailer-Jones+, 2019) classification .
Spectral observations are required.
The discovery and reference images are available at:
http://master.sai.msu.ru/static/OT/160257.23-683645.6.png
List of Optical Transients discovered by MASTER
MASTER Global Robotic Net