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Supernovae from Red Supergiants with Extensive Mass Loss
Takashi Moriya, Nozomu Tominaga, Sergei I. Blinnikov +2
We calculate multicolor light curves (LCs) of supernovae (SNe) from red supergiants (RSGs) exploded within dense circumstellar medium (CSM). Multicolor LCs are calculated by using…
Fallback Supernovae: A Possible Origin of Peculiar Supernovae with Extremely Low Explosion Energies
Takashi Moriya, Nozomu Tominaga, Masaomi Tanaka +5
We perform hydrodynamical calculations of core-collapse supernovae (SNe) with low explosion energies. These SNe do not have enough energy to eject the whole progenitor and most of…
Observations of the Optical Transient in NGC 300 with AKARI/IRC: Possibilities of Asymmetric Dust Formation
R. Ohsawa, I. Sakon, T. Onaka +10
We present the results of near-infrared (NIR) multi-epoch observations of the optical transient in the nearby galaxy NGC300 (NGC300-OT) at 398 and 582 days after the discovery with…
A Core-Collapse Supernova Model for the Extremely Luminous Type Ic Supernova 2007bi: An Alternative to the Pair-Instability Supernova Model
Takashi Moriya, Nozomu Tominaga, Masaomi Tanaka +2
We present a core-collapse supernova model for the extremely luminous Type Ic supernova 2007bi. By performing numerical calculations of hydrodynamics, nucleosynthesis, and radiatio…
Multiple Main Sequence of Globular Clusters as a Result of Inhomogeneous Big Bang Nucleosynthesis
Takashi Moriya, Toshikazu Shigeyama
A new mechanism for enhancing the helium abundance in the blue main sequence stars of omega Centauri and NGC 2808 is investigated. We suggest that helium enhancement was caused by…