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N 体シミュレ ションで探る 銀河系中心部の若い星の起源

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N 体シミュレ ションで探る 銀河系中心部の若い星の起源
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e-mail: [email protected]
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The Origin of Young Stars near the
Galactic Center
Michiko FUJII
Kagoshima University, 1ῌ21ῌ35 Korimoto, Kagoshima 890ῌ0065, Japan
Abstract : Young massive stars have been found
within 1 pc from the Galactic center (GC). Since
in-situ formation of stars is di$cult because of
the strong tidal field of the central supermassive
black hole. We performed N-body simulations of
young star clusters migrating to the GC and
investigated whether the star clusters can carry
young stars to the GC. We found that
intermediate-mass black holes formed in the
clusters carry young stars to the GC by a 1 : 1
mean motion resonance and the migration
scenario can reproduce the distribution of the
observed young stars in the GC.
῍῏ῌῐ
2011 ῎ 4 ῌ
Fly UP