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Extinction Curves as a Probe of High-Redshift Metal Enrichment

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Title: Extinction Curves as a Probe of High-Redshift Metal Enrichment
Authors: Hirashita, H. Browse this author
Nozawa, T. Browse this author
Kozasa, T. Browse this author →KAKEN DB
Takeuchi, T. T. Browse this author
Issue Date: 2008
Publisher: Astronomical Society of the Pacific
Citation: Panoramic views of galaxy formation and evolution. Edited by Tadayuki Kodama, Toru Yamada, and Kentaro Aoki. ISBN: 978-1-58381-668-4
Journal Title: Astronomical Society of the Pacific conference series
Volume: 399
Start Page: 201
End Page: 202
Abstract: We use extinction curves of high-z (z > 5) galaxies to probe the metal enrichment in the early universe. Since at high z (> 5), low-mass stars cannot be dominant sources for dust grains, Type II supernovae (SNe II) and pair instability supernovae (PISNe), whose progenitors are massive stars with short lifetimes, should govern the dust production. Here, we investigate the theoretical extinction curves of dust produced in SNe II and PISNe. We find that the hypothesis that the dust is predominantly formed by SNe at z = 6 is still allowed by the current observational constraints.
Description: The 1st Subaru International Conference "Panoramic Views of Galaxy Formation and Evolution". 11-16 December 2007. Shonan Village Center, Hayama, Japan.
Conference Name: Subaru International Conference "Panoramic Views of Galaxy Formation and Evolution"
Conference Sequence: 1
Conference Place: Hayama
Type: proceedings
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 小笹 隆司

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