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Mid- and far-infrared properties of Spitzer Galactic bubbles revealed by the AKARI all-sky surveys
http://hdl.handle.net/2237/25268
06b58c25-de7e-4201-be5a-1da2b92530ba
名前 / ファイル | ライセンス | アクション | |
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2016-12-20 | |||||
タイトル | ||||||
タイトル | Mid- and far-infrared properties of Spitzer Galactic bubbles revealed by the AKARI all-sky surveys | |||||
著者 |
Hattori, Yasuki
× Hattori, Yasuki× Kaneda, Hidehiro× Ishihara, Daisuke× Fukui, Yasuo× Torii, Kazufumi× Hanaoka, Misaki× Kokusho, Takuma× Kondo, Akino× Shichi, Kazuyuki× Ukai, Sota× Yamagishi, Mitsuyoshi× Yamaguchi, Yuta |
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権利 | ||||||
権利情報 | This is a pre-copyedited, author-produced version of an article accepted for publication in [Publications of the Astronomical Society of Japan] following peer review. The version of record [Publications of the Astronomical Society of Japan. v.68, n.3, 2016, p.37] is available online at: http://doi.org/10.1093/pasj/psw028. | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | infrared: ISM | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | ISM: bubbles | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | stars: formation | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | stars: massive | |||||
抄録 | ||||||
内容記述 | We have carried out a statistical study on the mid- and far-infrared (IR) properties of Galactic IR bubbles observed by Spitzer. Using the Spitzer 8 μm images, we estimated the radii and covering fractions of their shells, and categorized them into closed, broken, and unclassified bubbles with our data analysis method. Then, using the AKARI all-sky images at wavelengths of 9, 18, 65, 90, 140, and 160 μm, we obtained the spatial distributions and the luminosities of polycyclic aromatic hydrocarbon (PAH), warm, and cold dust components by decomposing six-band spectral energy distributions with model fitting. As a result, 180 sample bubbles show a wide range of total IR luminosities corresponding to the bolometric luminosities of a single B-type star to many O-type stars. For all the bubbles, we investigated relationships between the radius, luminosities, and luminosity ratios, and found that there are overall similarities in the IR properties among the bubbles regardless of their morphological types. In particular, they follow a power-law relation with an index of ∼3 between the total IR luminosity and radius, as expected from the conventional picture of the Strömgren sphere. The exceptions are large broken bubbles; they indicate higher total IR luminosities, lower fractional luminosities of the PAH emission, and dust heating sources located nearer to the shells. We discuss the implications of those differences for a massive star-formation scenario. | |||||
内容記述タイプ | Abstract | |||||
出版者 | ||||||
出版者 | Oxford University Press | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプresource | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0004-6264 | |||||
書誌情報 |
Publications of the Astronomical Society of Japan 巻 68, 号 3, p. 37-37, 発行日 2016-06 |
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著者版フラグ | ||||||
値 | author | |||||
URI | ||||||
識別子 | http://doi.org/10.1093/pasj/psw028 | |||||
識別子タイプ | DOI | |||||
URI | ||||||
識別子 | http://hdl.handle.net/2237/25268 | |||||
識別子タイプ | HDL |