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  1. B100 理学部/理学研究科
  2. B100a 雑誌掲載論文
  3. 学術雑誌

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
43101c53-97b4-4d3f-9794-62f57df047bc
名前 / ファイル ライセンス アクション
Tamura_2019_ApJ_874_27.pdf Tamura_2019_ApJ_874_27 (1.9 MB)
Item type 学術雑誌論文 / Journal Article(1)
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
著者 Tamura, Yoichi

× Tamura, Yoichi

WEKO 92579

Tamura, Yoichi

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Mawatari, Ken

× Mawatari, Ken

WEKO 92580

Mawatari, Ken

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Hashimoto, Takuya

× Hashimoto, Takuya

WEKO 92581

Hashimoto, Takuya

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Inoue, Akio K.

× Inoue, Akio K.

WEKO 92582

Inoue, Akio K.

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Zackrisson, Erik

× Zackrisson, Erik

WEKO 92583

Zackrisson, Erik

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Christensen, Lise

× Christensen, Lise

WEKO 92584

Christensen, Lise

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Binggeli, Christian

× Binggeli, Christian

WEKO 92585

Binggeli, Christian

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Matsuda, Yuichi

× Matsuda, Yuichi

WEKO 92586

Matsuda, Yuichi

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Matsuo, Hiroshi

× Matsuo, Hiroshi

WEKO 92587

Matsuo, Hiroshi

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Takeuchi, Tsutomu T.

× Takeuchi, Tsutomu T.

WEKO 92588

Takeuchi, Tsutomu T.

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Asano, Ryosuke S.

× Asano, Ryosuke S.

WEKO 92589

Asano, Ryosuke S.

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Sunaga, Kaho

× Sunaga, Kaho

WEKO 92590

Sunaga, Kaho

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Shimizu, Ikkoh

× Shimizu, Ikkoh

WEKO 92591

Shimizu, Ikkoh

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Okamoto, Takashi

× Okamoto, Takashi

WEKO 92592

Okamoto, Takashi

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Yoshida, Naoki

× Yoshida, Naoki

WEKO 92593

Yoshida, Naoki

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Lee, Minju M.

× Lee, Minju M.

WEKO 92594

Lee, Minju M.

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Shibuya, Takatoshi

× Shibuya, Takatoshi

WEKO 92595

Shibuya, Takatoshi

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Taniguchi, Yoshiaki

× Taniguchi, Yoshiaki

WEKO 92596

Taniguchi, Yoshiaki

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Umehata, Hideki

× Umehata, Hideki

WEKO 92597

Umehata, Hideki

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Hatsukade, Bunyo

× Hatsukade, Bunyo

WEKO 92598

Hatsukade, Bunyo

Search repository
Kohno, Kotaro

× Kohno, Kotaro

WEKO 92599

Kohno, Kotaro

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Ota, Kazuaki

× Ota, Kazuaki

WEKO 92600

Ota, Kazuaki

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権利
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.
内容記述タイプ Abstract
出版者
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
DOI
関連識別子
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 ISSN
収録物識別子 1538-4357
書誌情報 The Astrophysical Journal

巻 874, 号 1, p. 27, 発行日 2019-03
著者版フラグ
値 publisher
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