GCN Circular 20404
Subject
LIGO/Virgo G268556: GWAC_F60B (60cm) follow-up two events of EWE001 and EWE002
Date
2017-01-09T12:50:04Z (8 years ago)
Edited On
2024-11-16T16:14:39Z (5 months ago)
From
Chao Wu at NAOC <wuchao.lamost@gmail.com>
Edited By
Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov> on behalf of Leo P. Singer at NASA/GSFC <leo.p.singer@nasa.gov>
J.Y. Wei (NAOC), L.P. Xin (NAOC), X.M. Meng (NAOC), X.H. Han (NAOC),
N.Leroy (LAL), S. Antier (LAL), C. WU (NAOC), L. Huang (NAOC), Y. Xu
(NAOC), H.B. Cai (NAOC), J. Wang (NAOC), X.M. Lu (NAOC), Y.L. Qiu (NAOC),
J.S. Deng (NAOC), L. Cao (NAOC), S. Wang (NAOC), L. Jia (NAOC), S.C.
Zou(NAOC), S.F. Liu(NAOC), Q.C. Feng(NAOC), H.L. Li(NAOC), D.W. Xu (NAOC),
Y.J. Xiao (NAOC), W.L. Dong(NAOC), Y.T. Zheng(NAOC), E.W.Liang (GXU), X.G.
Wang(GXU), Y.G. Yang (HBNU), B. Cordier (CEA), S.N. Zhang (NAOC), S. Basa
(LAM), B.B. Wu (IHEP), Jean-Luc Atteia (IRAP), D. Götz (CEA), C. Lachaud
(APC) on behalf of the SVOM Gravitational Astronomy group report:
We took images on the location of two events of EWE001 and EWE002 (Liu et
al LVC Circ. 20382) with our GWAC_F60B (60cm) telescope, which is dedicated
to identify transient candidates found by GWAC (a part of ground instrument
of SVOM mission) at Xinglong Observatory, China. Observation were obtained
in R band for 15 X 900s expoures during 16:49:29 and 22:02:03 (UTC) on
Juanary 8, 2017. The two events(objects) are corresponding to known objects
in USNO-B1.0 catalog.
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EWE001: mag_R = 16.98 mag_R2(in USNO) = 15.35
EWE002: mag_R=16.77 mag_R2(in USNO) = 16.57
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The photometric uncertainty is ~ 5%. The comparison star is object with
mag_R2 =16.17 (09:13:19.611 61:05:44.13 J2000).