TITLE: GCN CIRCULAR NUMBER: 42216 SUBJECT: MASTER OT J011025.98-583210.6 : SVOM/VT optical observation DATE: 25/10/13 14:25:57 GMT FROM: Yinuo Ma mayn@bao.ac.cn
Y. N. Ma, L. P. Xin, H. L. Li, Z. H. Yao, Y. L. Qiu, C. Wu, X. H. Han, Y. Xu, J. Wang, P. P. Zhang, W. J. Xie, Y. J. Xiao, H. B. Cai, L. Lan, J. S. Deng, J. Y. Wei (NAOC), J. Palmerio (CEA) report on behalf of the SVOM/VT team.
SVOM/VT performed a Target of Opportunity observation of MASTER OT J011025.98-583210.6 (Kechin et al., GCN 42211). SVOM/VT began observing the field at 2025-10-13T04:48:11 UTC in the VT_B (400nm-650nm) and VT_R (650nm-1000nm) channels simultaneously.
With X-band data, at the position of the optical transient (Kechin et al., GCN 42211) we don't detect any uncatalogued source, compared to the Legacy survey. But we noticed that there is a catalogued red source with an angular distance of 1.0 seconds from the source reported (Kechin et al., GCN 42211). The position is R.A.=01:10:26.11, DEC. = -58:32:10.49, J2000. The brightness was 20.31+/-0.07 in VT_R band, but VT_B>23 mag. The analysis showed that this source was stable during our 3.7 hours observation.
Our photometry was not corrected for Galactic extinction.
Given the source with red color at the position which is very near the MASTER OT J011025.98-583210.6, it is possible associated. A stellar flare from this late type star is possible.
The Space Variable Objects Monitor (SVOM) is a China-France joint mission led by the Chinese National Space Administration (CNSA, China), National Center for Space Studies (CNES, France) and the Chinese Academy of Sciences (CAS, China), which is dedicated to observing gamma-ray bursts and other transient phenomena in the energetic universe. VT was jointly developed by Xi'an Institute of Optics and Precision Mechanics (XIOPM), CAS and National astronomical observatories (NAOC), CAS.
View this GCN Circular online at https://gcn.nasa.gov/circulars/42216. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...