First supernova candidates discovered with Subaru/Hyper Suprime-Cam
ATel #6291; Nozomu Tominaga (Konan U./Kavli IPMU, U. Tokyo), Tomoki Morokuma (U. Tokyo), Masaomi Tanaka (NAOJ), Naoki Yasuda (Kavli IPMU, U. Tokyo), Hisanori Furusawa (NAOJ), Jian Jiang (U. Tokyo), Satoshi Miyazaki (NAOJ), Takashi J. Moriya (U. Bonn), Junichi Noumaru (NAOJ), Kiaina Schubert (NAOJ), and Tadafumi Takata (NAOJ)
on 4 Jul 2014; 15:51 UT
Credential Certification: Masayuki Yamanaka (yamanaka@center.konan-u.ac.jp)
Subjects: Optical, Supernovae
We report the discovery of the first set of supernova candidates
from a transient survey with Subaru/Hyper Suprime-Cam (HSC).
Our Subaru/HSC open-use observations were performed on 2 and 3 Jul 2014 UT.
The candidates were detected using a quick image subtraction system
developed by Konan University, The University of Tokyo,
National Astronomical Observatory of Japan, and Princeton University.
The system successfully discovers supernova candidates in real time
by image subtraction between the images obtained with HSC and
those with Suprime-Cam several years ago.
A limiting magnitude of each exposure is ~26.0 mag in g band.
Preliminary list of possible supernovae:
Name | RA (J2000) | Dec (J2000) | Disc Date | Disc Mag
HSC-SN14a | 13:59:23.15 | +14:52:23.4 | 2 Jul 2014 | g = 23.68 +- 0.12
HSC-SN14b | 14:00:00.46 | +14:11:08.8 | 2 Jul 2014 | g = 24.36 +- 0.17
HSC-SN14c | 14:00:28.17 | +14:42:18.3 | 2 Jul 2014 | g = 23.34 +- 0.10
HSC-SN14d | 14:00:45.31 | +14:33:46.2 | 2 Jul 2014 | g = 24.54 +- 0.19
HSC-SN14e | 14:01:44.85 | +14:45:10.9 | 2 Jul 2014 | g = 24.09 +- 0.15
HSC-SN14f | 14:11:46.50 | +53:23:08.9 | 2 Jul 2014 | r = 23.05 +- 0.09
HSC-SN14g | 15:24:33.24 | +48:05:35.4 | 3 Jul 2014 | g = 23.44 +- 0.11
HSC-SN14h | 23:23:06.80 | +28:42:29.3 | 2 Jul 2014 | g = 23.09 +- 0.09
The images are available at the following URL
(http://tpweb2.phys.konan-u.ac.jp/~tominaga/HSC-SN/).
First supernova candidates discovered with Subaru/Hyper Suprime-Cam
