436 citations · 860 across the 10 of their papers we have counts for
11 papers
Abundance analysis of three new extremely metal-poor stars, including one CEMP-s star
P. François, T. Suda, S. Wanajo +5
We report a detailed abundance analysis of three extremely metal-poor (EMP) stars thanks to spectra obtained with the high-dispersion spectrograph (HDS) at the Subaru telescope. Th…
A comparative study on three modes of s-process nucleosynthesis in extremely metal-poor AGB stars
S. Yamada, T. Suada, Y. Komiya +2
Carbon-enhanced metal-poor (CEMP) stars in the Galactic halo have a wide range of neutron-capture element abundance patterns. To identify their origin, we investigated three modes…
Are Faint Supernovae Responsible for Carbon-Enhanced Metal-Poor Stars?
Yutaka Komiya, Takuma Suda, Shimako Yamada +1
Mixing and fallback models in faint supernova models are supposed to reproduce the abundance patterns of observed carbon-enhanced metal-poor (CEMP) stars in the Galactic halo. A fi…
Stellar Abundances for Galactic Archaeology Database IV - Compilation of Stars in Dwarf Galaxies
Takuma Suda, Jun Hidaka, Wako Aoki +7
We have constructed the database of stars in the local group using the extended version of the SAGA (Stellar Abundances for Galactic Archaeology) database that contains stars in 24…
The s-Process Nucleosynthesis in Extremely Metal-Poor Stars as the Generating Mechanism of Carbon Enhanced Metal-Poor Stars
Takuma Suda, Shimako Yamada, Masayuki Y. Fujimoto
The origin of carbon-enhanced metal-poor (CEMP) stars plays a key role in characterising the formation and evolution of the first stars and the Galaxy since the extremely-poor (EMP…
The New Model of Chemical Evolution of r-process Elements Based on The Hierarchical Galaxy Formation I: Ba and Eu
Yutaka Komiya, Shimako Yamada, Takuma Suda +1
We investigate the chemical enrichment of r-process elements in the early evolutionary stages of the Milky Way halo within the framework of hierarchical galaxy formation using a se…
The Stellar Abundances for Galactic Archaeology (SAGA) Database III - Analysis of Enrichment Histories for Elements and Two Modes of Star Formation during the Early Evolution of Milky Way
Shimako Yamada, Takuma Suda, Yutaka Komiya +2
We study the enrichment histories for nine elements, C, four alpha-elements of Mg, Si, Ca, and Ti, Sc, and three iron-peak elements of Co, Ni, and Zn, by using a large number of st…
Transition of the Stellar Initial Mass Function Explored with Binary Population Synthesis
Takuma Suda, Yutaka Komiya, Shimako Yamada +7
The stellar initial mass function (IMF) plays a crucial role in determining the number of surviving stars in galaxies, the chemical composition of the interstellar medium, and the…
The Stellar Abundances for Galactic Archaeology (SAGA) Database II - Implications for Mixing and Nucleosynthesis in Extremely Metal-Poor Stars and Chemical Enrichment of the Galaxy
Takuma Suda, Shimako Yamada, Yutaka Katsuta +4
We discuss the characteristics of known extremely metal-poor (EMP) stars in the Galaxy using the Stellar Abundances for Galactic Archaeology (SAGA) database (Suda et al. 2008, PASJ…
The Stellar Abundances for Galactic Archeology (SAGA) Database - Compilation of the Characteristics of Known Extremely Metal-Poor Stars
Takuma Suda, Yutaka Katsuta, Shimako Yamada +6
We describe the construction of a database of extremely metal-poor (EMP) stars in the Galactic halo whose elemental abundances have been determined. Our database contains detailed…
Tidal Interactions of Red Giants with Environment Stars in Globular Clusters
Shimako Yamada, Atsuo T. Okazaki, Masayuki Y. Fujimoto
We investigate the tidal interactions of a red giant with a main sequence in the dense stellar core of globular clusters by Smoothed Particle Hydrodynamics method. Two models of $0…