[vsnet-alert 19443] MASTER OT J003831.10-640313.7 (ATEL)

[Taichi Kato]

MASTER OT J003831.10-640313.7 (ATEL)

   Bright dwarf nova and time-resolved photometry is urged.

There were several outbursts in ASAS-3 data:

  YYYYMMDD(UT)   mag  observer
  20001120.0258 13.764V  (ASAS (Pojmanski, G. 2002, Acta Astron. 52,397))
  20001120.0714 13.646V  (ASAS (Pojmanski, G. 2002, Acta Astron. 52,397))
  20001121.0487 13.289V  (ASAS (Pojmanski, G. 2002, Acta Astron. 52,397))
  20001121.0582 13.531V  (ASAS (Pojmanski, G. 2002, Acta Astron. 52,397))
  20001125.0544 13.572V  (ASAS (Pojmanski, G. 2002, Acta Astron. 52,397))
  20001127.0535 13.967V  (ASAS (Pojmanski, G. 2002, Acta Astron. 52,397))
  20001129.0455 14.240V  (ASAS (Pojmanski, G. 2002, Acta Astron. 52,397))
  20001201.0420 <14.50V  (ASAS (Pojmanski, G. 2002, Acta Astron. 52,397))

  YYYYMMDD(UT)   mag  observer
  20020817.2679 <14.50:V (ASAS (Pojmanski, G. 2002, Acta Astron. 52,397))
  20020822.1736 12.929V  (ASAS (Pojmanski, G. 2002, Acta Astron. 52,397))
  20020902.2643 <14.50V  (ASAS (Pojmanski, G. 2002, Acta Astron. 52,397))

  YYYYMMDD(UT)   mag  observer
  20040215.0315 <14.50V  (ASAS (Pojmanski, G. 2002, Acta Astron. 52,397))
  20040218.0249 13.323V  (ASAS (Pojmanski, G. 2002, Acta Astron. 52,397))
  20040224.0121 <14.50V  (ASAS (Pojmanski, G. 2002, Acta Astron. 52,397))

  YYYYMMDD(UT)   mag  observer
  20050608.3879 <14.50:V (ASAS (Pojmanski, G. 2002, Acta Astron. 52,397))
  20050623.3689 13.524V  (ASAS (Pojmanski, G. 2002, Acta Astron. 52,397))
  20050701.3598 <14.50V  (ASAS (Pojmanski, G. 2002, Acta Astron. 52,397))

  YYYYMMDD(UT)   mag  observer
  20080708.3776 <14.50:V (ASAS (Pojmanski, G. 2002, Acta Astron. 52,397))
  20080714.3906 13.521V  (ASAS (Pojmanski, G. 2002, Acta Astron. 52,397))
  20080717.3156 13.957V  (ASAS (Pojmanski, G. 2002, Acta Astron. 52,397))
  20080719.3537 14.003V  (ASAS (Pojmanski, G. 2002, Acta Astron. 52,397))
  20080723.3143 <14.50:V (ASAS (Pojmanski, G. 2002, Acta Astron. 52,397))

==============================================================================
ATEL #8596                                                           ATEL #8596

Title:  Very Bright OT detected by MASTER-SAAO
Author: O. Gress, V. Lipunov, E. Gorbovskoy (Lomonosov MSU), D. Buckley
                (SAAO), N. Budnev (API ISU), N. Tiurina, P. Balanutsa, V. Kornilov,
                A. Kuznetsov, V. Shumkov,  I. Gorbunov, D. Vlasenko, V. Vladimirov,
                E. Popova (M. V. Lomonosov Moscow State University, SAI), S. Potter,
                M. Kotze (The South African Astronomical Observatory)
Queries:        tiurina at sai.msu.ru
Posted: 27 Jan 2016; 13:16 UT
Subjects:Optical, Blazar, Cataclysmic Variable, Transient

MASTER OT J003831.10-640313.7 discovery - CV or BL Lac type

MASTER-SAAO auto-detection system ( <A HREF="http://www.hindawi.com/journals/aa/2010/349171/
">Lipunov
et al., "MASTER Global Robotic Net",  
Advances in Astronomy, 2010, 349171</A> ) discovered OT source at (RA,
Dec) = 00h 38m 31.10s -64d 03m 13.7s on 2016-01-26.85306 UT. 
The OT unfiltered magnitude is 12.7m (limit 18.5m). 

The OT is seen in 48 images. There is no minor planet at this place. 

We have reference image without OT on 2015-02-06.77647 UT with unfiltered
magnitude limit 21.7m. 

There are several catalogues which contain object inside our error box
(+-0.7 arc sec): GALEX,WISE etc. But it is interesting that the source
founded in      Atlas of Radio/X-ray associations (ARXA). 

Spectral observations are required. 

The discovery and reference images are available at: 

http://master.sai.msu.ru/static/OT/003831.10-640313.7.png

<center><a href="http://observ.pereplet.ru/MASTER_OT.html">List of Optical
Transients discovered by MASTER</a></center>

MASTER Global Robotic Net: http://observ.pereplet.ru