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Browsing by Author "Leung, Shing-Chi"
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New Type Ia supernova Yields and the Manganese and Nickel Problems in the Milky Way and Dwarf Spheroidal Galaxies
Kobayashi, Chiaki; Leung, Shing-Chi; Nomoto, Ken'ichi (2020-06-04)In our quest to identify the progenitors of Type Ia supernovae (SNe Ia), we first update the nucleosynthesis yields both for Chandrasekhar (Ch) and sub-Ch mass white dwarfs (WDs), for a wide range of metallicity, with our ... -
Origin of metals in old Milky Way halo stars based on GALAH and Gaia
Ishigaki, Miho N.; Hartwig, Tilman; Tarumi, Yuta; Leung, Shing-Chi; Tominaga, Nozomu; Kobayashi, Chiaki; Magg, Mattis; Simionescu, Aurora; Nomoto, Ken'ichi (2021-10-01)Stellar and supernova nucleosynthesis in the first few billion years of the cosmic history have set the scene for early structure formation in the Universe, while little is known about their nature. Making use of stellar ... -
Standing on the shoulders of giants : New mass and distance estimates for Betelgeuse through combined evolutionary, asteroseismic, and hydrodynamical simulations with MESA
Joyce, Meridith; Leung, Shing-Chi; Molnár, László; Ireland, Michael J.; Kobayashi, Chiaki; Nomoto, Ken'ichi (2020-10-13)We conduct a rigorous examination of the nearby red supergiant Betelgeuse by drawing on the synthesis of new observational data and three different modeling techniques. Our observational results include the release of new, ...