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Upper-limit magnitudes of SN 2018aoq in NGC 4151

ATel #11526; M. Yamanaka, T. Nakaoka, M. Kawabata, H. Kimura, and K. S. Kawabata (Hiroshima Univ.)
on 11 Apr 2018; 12:29 UT
Credential Certification: Masayuki Yamanaka (masyamanaka@hiroshima-u.ac.jp)

Subjects: Optical, Supernovae

We have serendipitously obtained V, R, and I -band imaging data of the host galaxy NGC 4151 of SN 2018aoq using the Hiroshima Optical and Near-InfraRed camera (HONIR; Akitaya et al. 2014, Proc. SPIE 9147, 91474) installed to the Cassegrain focus of the 1.5-m Kanata telescope at the Higashi-Hiroshima Observatory on Mar 31.5. The observations were performed at 0.5 days prior to the pre-discovery detection reported by Nazarov et al. (ATEL #11498). We confirmed the non-detection of the supernova in our images, and gave the upper-limit magnitudes of 17.7, 17.5, and 17.3 mag in V, R, and I -bands, respectively. Their upper-limit magnitudes were estimated using the reference star magnitudes in the APASS (Henden et al. 2016) catalog. It indicates that the light curves exhibit the quickly rising at that time. Follow-up observations for this supernova should be encouraged.