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within T Tsujimoto Remove this filter Astronomy, Observations and Techniques Remove this filter

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  1. No Access

    Chapter

    Metallicity Effect on Type Ia Supernovae and Galactic and Cosmic Chemical Evolution

    There exist two distinct types of supernova explosions: One is Type II supernovae (SNe II), which are the core collapse-induced explosions of short-lived massive stars (≳ 8M⊙) and produce more O and Mg relative t...

    C. Kobayashi, T. Tsujimoto, K. Nomoto in The Evolution of The Milky Way (2000)

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    Chapter

    Inhomogeneous Chemical Evolution of the Galactic Halo

    We find that abundance patterns seen in extremely metal-poor stars with [Fe/H] ≲2.5 follow those seen in the individual supernova rem­nants. This suggests that stars are made from individual supernova events. ...

    T. Tsujimoto, T. Shigeyama, Y. Yoshii in The Evolution of The Milky Way (2000)

  3. No Access

    Article

    New Insights Into the Early Stage of the Galactic Chemical Evolution

    T. Tsujimoto, T. Shigeyama in Astrophysics and Space Science (1999)

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    Chapter and Conference Paper

    New Insights into the Early Stage of the Galactic Chemical Evolution

    The supernova yields of several heavy elements including α-, iron-group, and r-process elements are obtained as a function of the mass of their progenitor main-sequence stars M ms from the abundance...

    T. Tsujimoto, T. Shigeyama in Galaxy Evolution: Connecting the Distant U… (1999)

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    Chapter

    Type Ia Supernovae: Nucleosynthesis and Constraints on Progenitors

    Among the major uncertainties involved in the Chandrasekhar mass models for Type Ia supernovae (SNe Ia) are the companion star of the accreting white dwarf (or the accretion rate that determines the carbon ign...

    K. Nomoto, K. Iwamoto, N. Nakasato, F.-K. Thielemann… in Thermonuclear Supernovae (1997)

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    Chapter

    The Chemodynamical Evolution of Spheroidal Systems and the Resultant Stellar Abundance Distribution Function

    We construct a chemo-dynamical model for galaxy formation using a three dimensional SPH method. We simulate the formation of two spheroidal systems, i.e., the elliptical galaxy and the Galactic bulge, based on...

    T. Tsujimoto, T. Shigeyama, K. Nomoto in Unsolved Problems of the Milky Way (1996)

  7. No Access

    Chapter and Conference Paper

    SPH Simulations of the Chemical and Dynamical Evolution of the Galactic Bulge

    We simulate the chemical. and dynamical. evolution of the galactic bulge with the smoothed particle hydrodynamics (SPH) method. We calculate the early phase of galaxy formation in which the bulge is formed thr...

    T. Tsujimoto, K. Nomoto, T. Shigeyama, Y. Ishimaru in Galactic Bulges (1993)