MASTER OT J044008.76-651302.3 Kilonova candidate for LVC S200213t BNS merging
ATel #13487; V. Shumkov, V. Lipunov, E. Gorbovskoy, V. Kornilov, P. Balanutsa, N. Tyurina, A. Kuznetsov, F. Balakin, K. Zhirkov, V. Vladimirov, D. Vlasenko, I. Gorbunov, D. Zimnukhov, V. Senik, T. Pogrosheva, A. Chasovnikov, D. Kuvshinov (Lomonosov Moscow State University, SAI, Physics Department), O. A. Gres, N. M. Budnev, O. Ershova (Irkutsk State University, API), R. Podesta, C. Lopez, F. Podesta, C. Francile(Observatorio Astronomico Felix Aguilar OAFA), H. Levato(Instituto de Ciencias Astronomicas, de la Tierra y del Espacio ICATE), R. Rebolo, M. Serra(The Instituto de Astrofisica de Canarias), D. Buckley(South African Astronomical Observatory), V. Yurkov, A. Gabovich, Yu. Sergienko(Blagoveschensk Educational State University) A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory)
on 15 Feb 2020; 15:09 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)
Subjects: Optical, Request for Observations, Cataclysmic Variable, Gravitational Waves, Supernovae, Transient, Variables
Referred to by ATel #: 13488
MASTER Global Robotic Net (http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)
covered 1525 square degrees of S299213t
(LVC GCN #27042, Lipunov et al. GCN #27041, GCN #27072 https://gcn.gsfc.nasa.gov/other/S200213t.gcn3 )
that is equal to 100% of 50%-error-field and 81% of 90%-error-field
https://master.sai.msu.ru/site/master2/ligo_1.php?id=11331
MASTER OT J044008.76-651302.3 discovery - OT in 15"W,39.5"S from PGC315337 center (in 3-sigma of LVC error-box)
AT2020cph
MASTER-SAAO auto-detection system discovered OT source at
R.A.,Dec(2000) = 04h 40m 08.76s -65d 13m 02.3s on 2020-02-14.91294 UT.
The OT unfiltered magnitude (automatic photometry):
2020-02-13 22:03:33UT 19.6
2020-02-14 02:11:16UT 19.0
2020-02-14 22:04:43UT 18.9
We have reference image on 2017-12-22.95279 UT with unfiltered mlim= 20.3m, nearest in time at
2020-01-27 20:13:33 with mlim=19.0
There is no any sources in VIZIER database and in MASTER database(since Dec 2014) at this position
Spectral observations are required.
PGC315337 has Btc=16.2 (no V in LEDA, NED)
Observations and analisys will be continued.
other classification (CV in MW or SN in PGC315337 can not be excluded without Sp
MASTER Global Robotic Net
