Tadashi Morokuma

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We present observations of SCP 06F6, an unusual optical transient discovered during the Hubble Space Telescope Cluster Supernova Survey. The transient brightened over a period of ∼100 days, reached a peak magnitude of ∼21.0 in both i775 and z850, and then declined over a similar timescale. There is no host galaxy or progenitor star detected at the location(More)
We report on the environmental dependence of properties of galaxies around the RDCSJ0910+54 cluster at z = 1.1. We have obtained multi-band wide-field images of the cluster with Suprime-Cam and MOIRCS on Subaru and WFCAM on UKIRT. Also, an intensive spectroscopic campaign has been carried out using LRIS on Keck and FOCAS on Subaru. We have collected 161(More)
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