Xinglong followup observations: Brightening of featureless blue transient ATLAS18bcde (AT2018kpo)
ATel #12330; Jing Wang (GuangXi Uni. NAOC), Liping Xin (NAOC), Jie Zheng (NAOC), Jianyan Wei (NAOC), Xuhui Han (NAOC), Pinpin Zhang (NAOC), Xianggao Wang (GuangXi Uni.)
on 25 Dec 2018; 15:44 UT
Distributed as an Instant Email Notice Transients
Credential Certification: Liping Xin (xlp@nao.cas.cn)
Subjects: Optical, Supernovae, Transient, Tidal Disruption Event
Referred to by ATel #: 12332
We observed the transient ATLAS18bcde (AT2018kpo) (Smartt et al. ATel
#12326) by the GWAC-F60A telescope at 2018-12-25T10:55:21. The R-band
brightness calibrated through the USNOB1.0 catalog is 17.1mag, which is
brighter than the GROND followup observations taken at 8 hours before
(Chen et al. ATel#12329).
The low resolution spectrum of ATLAS18bcde (AT2018kpo) has been
obtained by the NAOC Xinglong 2.16m telescope with the BEFOSC
spectragraph at 2018-12-25T12:08. The spectrum taken by an exposure
of 1800s shows the transient has a quite blue featureless spectrum.
after correcting for the Milky Way extinction by E(B-V)=0.05mag
(Schlafly & Finkbeiner 2011).
