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Ultra-stripped Type Ic supernovae from close binary evolution
T. M. Tauris, N. Langer, T. J. Moriya +3
Recent discoveries of weak and fast optical transients raise the question of their origin. We investigate the minimum ejecta mass associated with core-collapse supernovae (SNe) of…
Four open questions in massive star evolution
Georges Meynet, Patrick Eggenberger, Sylvia Ekstrom +5
We discuss four questions dealing with massive star evolution. The first one is about the origin of slowly rotating, non-evolved, nitrogen rich stars. We propose that these stars m…
Properties of Newly Formed Dust Grains in The Luminous Type IIn Supernova 2010jl
K. Maeda, T. Nozawa, D. K. Sahu +15
Supernovae (SNe) have been proposed to be the main production sites of dust grains in the Universe. Our knowledge on their importance to dust production is, however, limited by obs…
An Analytic Bolometric Light Curve Model of Interaction-Powered Supernovae and its Application to Type IIn Supernovae
Takashi J. Moriya, Keiichi Maeda, Francesco Taddia +3
We present an analytic model for bolometric light curves which are powered by the interaction between supernova ejecta and a dense circumstellar medium. This model is aimed at mode…
Episodic modulations in supernova radio light curves from luminous blue variable supernova progenitor models
Takashi J. Moriya, Jose H. Groh, Georges Meynet
<Context> Ideally, one would like to know which type of core-collapse SNe is produced by different progenitors and the channels of stellar evolution leading to these progenitors. T…
Detectability of High-Redshift Superluminous Supernovae with Upcoming Optical and Near-Infrared Surveys - II. Beyond z=6
Masaomi Tanaka, Takashi J. Moriya, Naoki Yoshida
Observational identification of the first stars is one of the great challenges in the modern astronomy. Although a single first star is too faint to be detected, supernova explosio…
SN 2009js at the crossroads between normal and subluminous Type IIP supernovae: optical and mid-infrared evolution
P. Gandhi, M. Yamanaka, M. Tanaka +8
We present a study of SN 2009js in NGC 918. Multi-band Kanata optical photometry covering the first ~120 days show the source to be a Type IIP SN. Reddening is dominated by that du…
Extraordinary Magnification of the Ordinary Type Ia Supernova PS1-10afx
Robert M. Quimby, Marcus C. Werner, Masamune Oguri +8
Recently, Chornock and co-workers announced the Pan-STARRS discovery of a transient source reaching an apparent peak luminosity of ~4x10^44 erg s^-1. We show that the spectra of th…
Synthetic Light Curves of Shocked Dense Circumstellar Shells
Takashi J. Moriya, Sergei I. Blinnikov, Petr V. Baklanov +2
We numerically investigate light curves (LCs) of shocked circumstellar shells which are suggested to reproduce the observed LC of superluminous SN 2006gy analytically. In the previ…