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Origin and Nature of Dust in the Early Universe

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タイトル: Origin and Nature of Dust in the Early Universe
著者: Nozawa, T. 著作を一覧する
Kozasa, T. 著作を一覧する
Umeda, H. 著作を一覧する
Hirashita, H. 著作を一覧する
Maeda, K. 著作を一覧する
Nomoto, K. 著作を一覧する
Tominaga, N. 著作を一覧する
Habe, A. 著作を一覧する
Dwek, E. 著作を一覧する
Takeuchi, T. T. 著作を一覧する
Ishii, T. T. 著作を一覧する
発行日: 2010年 3月
出版者: Astronomical Society of the Pacific
引用: Cosmic Dust - Near and Far. Eds. by Thomas Henning, Eberhard Grün, and Jürgen Steinacker. ISBN: 978-1-58381-708-7
誌名: Astronomical Society of the Pacific conference series
巻: 414
開始ページ: 247
抄録: We present recent advances in theoretical studies of the formation and evolution of dust in primordial supernovae (SNe) that are considered to be the main sources of dust in the early universe. Being combined with the results of calculations of dust formation in the ejecta of Population III SNe, the investigations of the evolution of newly formed dust within supernova remnants (SNRs) show that smaller grains are predominantly destroyed by sputtering in the shocked gas, while larger grains are injected into the ambient medium. The mass of dust grains surviving the destruction in SNRs reaches up to 0.1–15 Msun, which is high enough to account for the content of dust observed for the host galaxies of quasars at z > 5. In addition, the transport of dust formed in the ejecta causes the formation of low-mass stars in the dense shell of primordial SNRs and affects the elemental composition of those stars. We also show that the flat extinction curve is expected in the high-redshift universe where SNe are the possible sources of dust.
記述: Cosmic Dust - Near and Far. 8-12 September 2008. Convention Center, Heidelberg, Germany.
資料タイプ: proceedings (author version)
URI: http://hdl.handle.net/2115/44617
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 小笹 隆司

 

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