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- The University of TokyoJP35 papers
- Kavli Institute for the Physics and Mathematics of the UniverseJP19 papers
- National Astronomical Observatory of JapanJP19 papers
- Max Planck Institute for AstrophysicsDE8 papers
- The Graduate University for Advanced Studies, SOKENDAIJP7 papers
- Tohoku UniversityJP7 papers
- Tokyo University of ScienceJP7 papers
- Centre National de la Recherche ScientifiqueFR6 papers
- École Polytechnique Fédérale de LausanneCH6 papers
- Institute of Astronomy and Astrophysics, Academia SinicaTW6 papers
- Princeton UniversityUS6 papers
- Technical University of MunichDE6 papers
12 papers · 1 filter
Four-hundred Very Metal-poor Stars Studied with LAMOST and Subaru. III. Dynamically Tagged Groups and Chemodynamical Properties
Ruizhi Zhang, Tadafumi Matsuno, Haining Li +9
Very metal-poor (VMP) stars record the signatures of early accreted galaxies, making them essential tools for unraveling the early stages of Galaxy formation. Understanding the ori…
Detection of the actinide Th in an r-process-enhanced star with accretion origin
Xing Qianfan, Zhao Gang, Aoki Wako +4
The thorium and six second-peak r-process element (56<Z<72) abundances are determined for the alpha-poor star LAMOST J1124+4535 based on a high-resolution spectrum obtained with th…
Survey of Gravitationally-lensed Objects in HSC Imaging (SuGOHI). VIII. New galaxy-scale lenses from the HSC SSP
Kenneth C. Wong, James H. H. Chan, Dani C. -Y. Chao +5
We conduct a search for galaxy-scale strong gravitational lens systems in Data Release 4 of the Hyper Suprime-Cam Subaru Strategic Program (HSC SSP), consisting of data taken up to…
High-precision chemical abundances of Galactic building blocks. The distinct chemical abundance sequence of Sequoia
Tadafumi Matsuno, Helmer H. Koppelman, Amina Helmi +5
Context: Sequoia is a retrograde kinematic substructure in the nearby Galactic halo, whose properties are a matter of debate. For example, previous studies do not necessarily agree…
Optical Spectroscopy of Dual Quasar Candidates from the Subaru HSC-SSP program
Shenli Tang, John D. Silverman, Xuheng Ding +30
We report on a spectroscopic program to search for dual quasars using Subaru Hyper Suprime-Cam (HSC) images of SDSS quasars which represent an important stage during galaxy mergers…
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…