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10 papers
Spectropolarimetry of the Unique Type Ib Supernova 2005bf: Larger Asymmetry Revealed by Later-Phase Data
Masaomi Tanaka, Koji S. Kawabata, Keiichi Maeda +6
We present an optical spectropolarimetric observation of the unique Type Ib supernova (SN) 2005bf at 8 days after the second maximum. The data, combined with the polarization spect…
The Extremely Luminous Supernova 2006gy at Late Phase: Detection of Optical Emission from Supernova
Koji S. Kawabata, Masaomi Tanaka, Keiichi Maeda +4
We performed optical spectroscopy and photometry of SN 2006gy at late time, ~400 days after the explosion, with the Subaru/FOCAS in a good seeing condition. We found that the SN fa…
nu-Process Nucleosynthesis in Population III Core-Collapse Supernovae
Takashi Yoshida, Hideyuki Umeda, Ken'ichi Nomoto
We investigate the effects of neutrino-nucleus interactions (the nu-process) on the production of iron-peak elements in Population III core-collapse supernovae. The nu-process and…
SN 2006aj Associated with XRF 060218 At Late Phases: Nucleosynthesis-Signature of A Neutron Star-Driven Explosion
Keiichi Maeda, Koji Kawabata, Masaomi Tanaka +9
Optical spectroscopy and photometry of SN 2006aj have been performed with the Subaru telescope at t > 200 days after GRB060218, the X-ray Flash with which it was associated. Strong…
3D Models for High Velocity Features in Type Ia Supernovae
Masaomi Tanaka, Paolo A. Mazzali, Keiichi Maeda +1
Spectral synthesis in 3-dimensional (3D) space for the earliest spectra of Type Ia supernovae (SNe Ia) is presented. In particular, the high velocity absorption features that are c…
The Unique Type Ib Supernova 2005bf: A WN Star Explosion Model for Peculiar Light Curves and Spectra
N. Tominaga, M. Tanaka, K. Nomoto +22
Observations and modeling for the light curve (LC) and spectra of supernova (SN) 2005bf are reported. This SN showed unique features: the LC had two maxima, and declined rapidly af…