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dc.contributor.author | Takigawa, Aki | en |
dc.contributor.author | Kamizuka, Takafumi | en |
dc.contributor.author | Tachibana, Shogo | en |
dc.contributor.author | Yamamura, Issei | en |
dc.contributor.alternative | 瀧川, 晶 | ja |
dc.contributor.alternative | 上塚, 貴史 | ja |
dc.contributor.alternative | 橘, 省吾 | ja |
dc.contributor.alternative | 山村, 一誠 | ja |
dc.date.accessioned | 2017-11-02T01:55:34Z | - |
dc.date.available | 2017-11-02T01:55:34Z | - |
dc.date.issued | 2017-11-01 | - |
dc.identifier.issn | 2375-2548 | - |
dc.identifier.uri | http://hdl.handle.net/2433/227757 | - |
dc.description | 死にゆく星からの恒星風の加速、酸化アルミニウム形成が引き金 --アルマ望遠鏡が明かすケイ酸塩に乏しい質量放出星の謎--. 京都大学プレスリリース. 2017-11-02. | ja |
dc.description.abstract | Dust grains, formed around asymptotic giant branch (AGB) stars, are accelerated by stellar radiation to drive stellar winds, which supply freshly synthesized nuclides to the Galaxy. Silicate is the dominant dust species in space, but ~40% of oxygen-rich AGB stars are thought to have comparable amounts of aluminum oxide dust. Dust formation and the wind-driving mechanism around these oxygen-rich stars, however, are poorly understood. We report on the spatial distributions of AlO and 29SiO molecules around an aluminum oxide–rich M-type AGB star, W Hydrae, based on observations obtained with the Atacama Large Millimeter/submillimeter Array. AlO molecules were only observed within three stellar radii (Rstar), whereas 29SiO was distributed in the accelerated wind beyond 5 Rstar without significant depletion. This strongly suggests that condensed aluminum oxide dust plays a key role in accelerating the stellar wind and in preventing the efficient formation of silicate dust around W Hydrae. | en |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | American Association for the Advancement of Science (AAAS) | en |
dc.rights | Copyright © 2017 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license, which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited. | en |
dc.title | Dust formation and wind acceleration around the aluminum oxide–rich AGB star W Hydrae | en |
dc.type | journal article | - |
dc.type.niitype | Journal Article | - |
dc.identifier.jtitle | Science Advances | en |
dc.identifier.volume | 3 | - |
dc.identifier.issue | 11 | - |
dc.relation.doi | 10.1126/sciadv.aao2149 | - |
dc.textversion | publisher | - |
dc.identifier.artnum | eaao2149 | - |
dc.identifier.pmid | 29109978 | - |
dc.relation.url | https://www.kyoto-u.ac.jp/ja/research-news/2017-11-02-1 | - |
dcterms.accessRights | open access | - |
datacite.awardNumber | 12J02495 | - |
datacite.awardNumber | 15K17787 | - |
jpcoar.funderName | 日本学術振興会 | ja |
jpcoar.funderName | 日本学術振興会 | ja |
jpcoar.funderName.alternative | Japan Society for the Promotion of Science (JSPS) | en |
jpcoar.funderName.alternative | Japan Society for the Promotion of Science (JSPS) | en |
出現コレクション: | 学術雑誌掲載論文等 |
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