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Detection of the Far-infrared [O iii] and Dust Emission in a Galaxy at Redshift 8.312: Early Metal Enrichment in the Heart of the Reionization Era
http://hdl.handle.net/2237/00030542
http://hdl.handle.net/2237/0003054243101c53-97b4-4d3f-9794-62f57df047bc
名前 / ファイル | ライセンス | アクション |
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Tamura_2019_ApJ_874_27 (1.9 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2019-07-11 | |||||
タイトル | ||||||
タイトル | Detection of the Far-infrared [O iii] and Dust Emission in a Galaxy at Redshift 8.312: Early Metal Enrichment in the Heart of the Reionization Era | |||||
言語 | en | |||||
著者 |
Tamura, Yoichi
× Tamura, Yoichi× Mawatari, Ken× Hashimoto, Takuya× Inoue, Akio K.× Zackrisson, Erik× Christensen, Lise× Binggeli, Christian× Matsuda, Yuichi× Matsuo, Hiroshi× Takeuchi, Tsutomu T.× Asano, Ryosuke S.× Sunaga, Kaho× Shimizu, Ikkoh× Okamoto, Takashi× Yoshida, Naoki× Lee, Minju M.× Shibuya, Takatoshi× Taniguchi, Yoshiaki× Umehata, Hideki× Hatsukade, Bunyo× Kohno, Kotaro× Ota, Kazuaki |
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アクセス権 | ||||||
アクセス権 | open access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
権利 | ||||||
言語 | en | |||||
権利情報 | © 2019. The American Astronomical Society | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | dust, extinction | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | galaxies: formation | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | galaxies: high-redshift | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | galaxies: ISM | |||||
抄録 | ||||||
内容記述 | We present the Atacama Large Millimeter/submillimeter Array detection of the [O iii] 88 μm line and rest-frame 90 μm dust continuum emission in a Y-dropout Lyman break galaxy (LBG), MACS0416_Y1 lying behind the Frontier Field cluster MACS J0416.1−2403. This [O iii] detection confirms the LBG with a spectroscopic redshift of z = 8.3118 ± 0.0003, making this object one of the farthest galaxies ever identified spectroscopically. The observed 850 μm flux density of 137 ± 26 μJy corresponds to a de-lensed total infrared (IR) luminosity of LIR=(1.7±0.3)×10^11L⊙ if assuming a dust temperature of T dust = 50 K and an emissivity index of β = 1.5, yielding a large dust mass of 4×10^6M⊙. The ultraviolet-to-far-IR spectral energy distribution modeling where the [O iii] emissivity model is incorporated suggests the presence of a young (τ age ≈ 4 Myr), star-forming (SFR ≈ 60M⊙ yr^−1), moderately metal-polluted (Z ≈ 0.2Z ⊙) stellar component with a mass of M star = 3 × 10^8 M ⊙. An analytic dust mass evolution model with a single episode of star formation does not reproduce the metallicity and dust mass in τ age ≈ 4 Myr, suggesting a pre-existing evolved stellar component with M star ~ 3 × 10^9 M☉ and τage ~ 0.3 Gyr as the origin of the dust mass. | |||||
言語 | en | |||||
内容記述タイプ | Abstract | |||||
出版者 | ||||||
言語 | en | |||||
出版者 | IOP publishing | |||||
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 | |||||
出版タイプ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.3847/1538-4357/ab0374 | |||||
ISSN(print) | ||||||
収録物識別子タイプ | PISSN | |||||
収録物識別子 | 1538-4357 | |||||
書誌情報 |
en : The Astrophysical Journal 巻 874, 号 1, p. 27, 発行日 2019-03 |
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著者版フラグ | ||||||
値 | publisher |