74 citations · 361 across the 14 of their papers we have counts for
9 papers · 1 filter
Public Release of A-SLOTH: Ancient Stars and Local Observables by Tracing Halos
Tilman Hartwig, Mattis Magg, Li-Hsin Chen +8
The semi-analytical model A-SLOTH (Ancient Stars and Local Observables by Tracing Halos) is the first public code that connects the formation of the first stars and galaxies to obs…
Internal r-process abundance spread of M15 and a single stellar population model
Yuta Tarumi, Naoki Yoshida, Shigeki Inoue
The member stars in globular cluster M15 show a substantial spread in the abundances of r-process elements. We argue that a rare and prolific r-process event enriched the natal clo…
Origin of metals in old Milky Way halo stars based on GALAH and Gaia
Miho N. Ishigaki, Tilman Hartwig, Yuta Tarumi +6
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 a…
Formation of an extended stellar halo around an ultra-faint dwarf galaxy following one of the earliest mergers from galactic building blocks
Yuta Tarumi, Naoki Yoshida, Anna Frebel
Ultra-faint dwarf galaxies (UFDs) are promising observable proxies to building blocks of galaxies formed in the early Universe. We study the formation and evolution of UFDs using c…
Evidence for r-process delay in very metal-poor stars
Yuta Tarumi, Kenta Hotokezaka, Paz Beniamini
The abundances of r-process elements of very metal-poor stars capture the history of the r-process enrichment in the early stage of star formation in a galaxy. Currently, various t…
-process enhancements of Gaia-Enceladus in GALAH DR3
Tadafumi Matsuno, Yutaka Hirai, Yuta Tarumi +3
The dominant site of production of -process elements remains unclear despite recent observations of a neutron star merger. Observational constraints on the properties of the sit…
s-process Enirchment of Ultrafaint Dwarf Galaxies
Yuta Tarumi, Takuma Suda, Freeke van de Voort +3
We study the production of barium (Ba) and strontium (Sr) in ultrafaint dwarf galaxies (UFDs). Both r- and s- processes produce these elements, and one can infer the contribution o…
Implications of inhomogeneous metal mixing for stellar archaeology
Yuta Tarumi, Tilman Hartwig, Mattis Magg
The first supernovae enrich the previously pristine gas with metals, out of which the next generation of stars form. Based on hydrodynamical simulations, we develop a new stochasti…
R-process enrichment in ultrafaint dwarf galaxies
Yuta Tarumi, Naoki Yoshida, Shigeki Inoue
We study the enrichment and mixing of r-process elements in ultrafaint dwarf galaxies (UFDs). We assume that r-process elements are produced by neutron-star mergers (NSMs), and exa…