MASTER: bright QSO flare and photometry of OT in M31
ATel #9166; P. Balanutsa, V. Lipunov (Lomonosov MSU), R. Rebolo Lopez, M. Serra Ricart, G. Israelian (IAC), E. Gorbovskoy, N. Tiurina, V. Shumkov, A. Kuznetsov, V. Kornilov, I. Gorbunov, O. Gress, V. Vladimirov, D. Kuvshinov (Lomonosov Moscow State Univeristy, SAI)
on 17 Jun 2016; 20:13 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)
Subjects: Optical, Request for Observations, AGN, Nova, Quasar, Transient, Variables
MASTER OT J164511.95+275227.2 discovery - bright (15.8m) QSO flare
MASTER-IAC auto-detection system discovered OT source at (RA, Dec) = 16h 45m 11.95s +27d 52m 27.2s on 2016-06-12.01477 UT.
The OT unfiltered magnitude is 15.8m (limit 19.3m).
The OT in bright state is seen in 3 images. We have reference images with OT in quiet state on
Date UT, unfiltered m_OT
2016-05-03 01:43:32.17UT 18.8
2016-03-10 00:58:15.98 19.0
2016-02-14 05:45:16.91 19.1
Last outburst was registered at MASTER-Kislovodsk on 2012-07-15 18:48:55.952 with unfiltered m_OT=16.8.
This OT is in 0.6" from the candidate to QSO( SDSS DR10 catalogue of candidate quasars (Brescia+, 2015))
Spectral observations are required.
The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/164511.95275227.2.png
MASTER OT J004117.95+403352.9 ( ATEL #9164 )preliminary photometry
The_Date,UT unfiltered m_OT+-0.2
2016-06-16 04:47:12UT 19.2(540s sum with m_lim=19.9)
2016-06-15 04:38:53.628 19.2
2016-06-14 04:48:39.25 19.2
2016-06-13 04:42:07.012 19.3
2016-06-11 04:25:40.673 19.3
2016-06-08 04:27:12.352 19.3
2016-06-07 04:29:23.573 19.4
2016-06-06 04:38:04.042 19.4
2016-06-04 04:35:54.891 19.4
2016-05-18 04:43:34.344 19.5
2016-05-14 04:51:31.207 19.4(m_lim=19.6)
2016-05-09 00:05:45 marginally seen 19.7(m_lim=19.7)
The images without OT with m_lim:
2016-05-08 04:56:57 up to 19.0
2016-04-10 01:00:32 up to 19.5
2016-02-23 19:57:28 up to 19.7
There is some correction to ATEL #9164, the OT is seen on the sum (540s) of 3 images(180s), started at 2016-06-16 04:47:12UT with m_lim=19.9 (and on the difference from this sum and the image of last year), but this OT is not seen(automatically can't be detected) on the single image at 2016-06-16 04:47:12UT with m_lim=19.3. This is Andromeda field, and the limits are +-0.2, also for the magnitudes of the star near this limit (preliminary automatic values).
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