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- The University of TokyoJP156 papers
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160 papers
6Li/7Li estimates for metal-poor stars
A. E. Garcia Perez, W. Aoki, S. Inoue +3
The presence of the lithium-6 isotope in some metal-poor stars is a matter of surprise because of the high values observed. Non-standard models of Big Bang nucleosynthesis and pre-…
Substellar Objects in Nearby Young Clusters (SONYC): The bottom of the Initial Mass Function in NGC1333
Alexander Scholz, Vincent Geers, Ray Jayawardhana +4
SONYC -- Substellar Objects in Nearby Young Clusters -- is a survey program to investigate the frequency and properties of substellar objects with masses down to a few times that o…
Variation of Inner Radius of Dust Torus in NGC4151
Shintaro Koshida, Yuzuru Yoshii, Yukiyasu Kobayashi +8
The long-term optical and near infrared monitoring observations for a type 1 act ive galactic nucleus NGC 4151 were carried out for six years from 2001 to 2006 b y using the MAGNUM…
Dynamically Driven Evolution of the Interstellar Medium in M51
J. Koda, N. Scoville, T. Sawada +20
We report the highest-fidelity observations of the spiral galaxy M51 in CO emission, revealing the evolution of giant molecular clouds (GMCs) vis-a-vis the large-scale galactic str…
MOIRCS Deep Survey IV: Evolution of Galaxy Stellar Mass Function Back to z ~ 3
M. Kajisawa, T. Ichikawa, I. Tanaka +11
We use very deep near-infrared (NIR) imaging data obtained in MOIRCS Deep Survey (MODS) to investigate the evolution of the galaxy stellar mass function back to z~3. The MODS data…
Chemical Signature of a Major Merger in the Early Formation of Small Magellanic Cloud
Takuji Tsujimoto, Kenji Bekki
The formation history of the Small Magellanic cloud (SMC) is unraveled based on the results of our new chemical evolution models constructed for the SMC, highlighting the observed…