GCN Circular 21685
Subject
LIGO/Virgo G298048: Subaru HSC z-band imaging of the OT candidate SSS17a
Date
2017-08-25T07:38:17Z (7 years ago)
From
Michitoshi Yoshida at J-GEM <yoshidam@hiroshima-u.ac.jp>
Yoshida, M., Tanaka, M. (NAOJ), Utsumi, Y. (Hiroshima Univ.),
Tominaga, N. (Konan Univ.), Ohsawa, R., Motohara, K. (Univ. of
Tokyo), Terai, T., Nakata, F., Lee, C. H., Furusawa, H., Koshida,
S. (NAOJ), Ohta, K. (Kyoto Univ.), Kawabata K. S. (Hiroshima
Univ.), Morokuma, T., Yasuda, N. (Univ. of Tokyo), Kawai, N.
(Tokyo Tech.), and Asakura, Y. (Nagoya Univ.) on behalf of the
J-GEM collaboration
We have performed z-band imaging observations of the OT candidate
of G298048, SSS17a (Coulter et al., GCN 21529) with Hyper
Suprime-Cam attached to the Subaru telescope on August 25.2 2017
UT. We found that the z-band magnitude of the source was
significantly fainter compared to our previous observations on
August 19.2 2017 UT (Yoshida et al. GCN 21586; Tominaga et al.
GCN 21595). Further analysis is ongoing.