Detections of far-infrared [OIII] and dust emission in a galaxy at z = 8.312: Early metal enrichment in the heart of the reionization era

Y. Tamura; K. Mawatari; T. Hashimoto; A. K. Inoue; E. Zackrissonm; L. Christensen; C. Binggeli; Y. Matsuda; H. Matsuo; T. T. Takeuchi; R. S. Asano; K. Sunaga; I. Shimizu; T. Okamoto; N. Yoshida; M. Lee; T. Shibuya; Y. Taniguchi; H. Umehata; B. Hatsukade; K. Kohno; K. Ota

doi:10.1017/S1743921319002436

Detections of far-infrared [OIII] and dust emission in a galaxy at z = 8.312: Early metal enrichment in the heart of the reionization era

Y. Tamura^*, K. Mawatari, T. Hashimoto, A. K. Inoue, E. Zackrissonm, L. Christensen, C. Binggeli, Y. Matsuda, H. Matsuo, T. T. Takeuchi, R. S. Asano, K. Sunaga, I. Shimizu, T. Okamoto, N. Yoshida, M. Lee, T. Shibuya, Y. Taniguchi, H. Umehata, B. HatsukadeK. Kohno, K. Ota

^*この研究の対応する著者

研究成果: Article › 査読

抄録

We present ALMA detection of the [O iii] 88 μm line and 850 μm dust continuum emission in a Y-dropout Lyman break galaxy, MACS0416-Y1. The [O iii] detection confirms the object with a spectroscopic redshift to be z = 8.3118±0.0003. The 850 μm continuum intensity (0.14 mJy) implies a large dust mass on the order of 4×10⁶M . The ultraviolet-to-far infrared spectral energy distribution modeling, where the [O iii] emissivity model is incorporated, suggests the presence of a young (τage 4 Myr), star-forming (SFR 60M yr^-1), and moderately metal-polluted (Z 0.2Z ) stellar component with a stellar mass of 3 × 10⁸M . An analytic dust mass evolution model with a single episode of star formation does not reproduce the metallicity and dust mass in 4 Myr, suggesting an underlying evolved stellar component as the origin of the dust mass.

本文言語	English
ページ（範囲）	211-215
ページ数	5
ジャーナル	Proceedings of the International Astronomical Union
巻	15
号	S341
DOI	https://doi.org/10.1017/S1743921319002436
出版ステータス	Published - 2019
外部発表	はい

ASJC Scopus subject areas

天文学と天体物理学
宇宙惑星科学

文献へのアクセス

10.1017/S1743921319002436

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引用スタイル

Tamura, Y., Mawatari, K., Hashimoto, T., Inoue, A. K., Zackrissonm, E., Christensen, L., Binggeli, C., Matsuda, Y., Matsuo, H., Takeuchi, T. T., Asano, R. S., Sunaga, K., Shimizu, I., Okamoto, T., Yoshida, N., Lee, M., Shibuya, T., Taniguchi, Y., Umehata, H., ... Ota, K. (2019). Detections of far-infrared [OIII] and dust emission in a galaxy at z = 8.312: Early metal enrichment in the heart of the reionization era. Proceedings of the International Astronomical Union, 15(S341), 211-215. https://doi.org/10.1017/S1743921319002436

Tamura, Y, Mawatari, K, Hashimoto, T, Inoue, AK, Zackrissonm, E, Christensen, L, Binggeli, C, Matsuda, Y, Matsuo, H, Takeuchi, TT, Asano, RS, Sunaga, K, Shimizu, I, Okamoto, T, Yoshida, N, Lee, M, Shibuya, T, Taniguchi, Y, Umehata, H, Hatsukade, B, Kohno, K & Ota, K 2019, 'Detections of far-infrared [OIII] and dust emission in a galaxy at z = 8.312: Early metal enrichment in the heart of the reionization era', Proceedings of the International Astronomical Union, vol. 15, no. S341, pp. 211-215. https://doi.org/10.1017/S1743921319002436

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title = "Detections of far-infrared [OIII] and dust emission in a galaxy at z = 8.312: Early metal enrichment in the heart of the reionization era",

abstract = "We present ALMA detection of the [O iii] 88 μm line and 850 μm dust continuum emission in a Y-dropout Lyman break galaxy, MACS0416-Y1. The [O iii] detection confirms the object with a spectroscopic redshift to be z = 8.3118±0.0003. The 850 μm continuum intensity (0.14 mJy) implies a large dust mass on the order of 4×106M . The ultraviolet-to-far infrared spectral energy distribution modeling, where the [O iii] emissivity model is incorporated, suggests the presence of a young (τage 4 Myr), star-forming (SFR 60M yr-1), and moderately metal-polluted (Z 0.2Z ) stellar component with a stellar mass of 3 × 108M . An analytic dust mass evolution model with a single episode of star formation does not reproduce the metallicity and dust mass in 4 Myr, suggesting an underlying evolved stellar component as the origin of the dust mass.",

keywords = "galaxies: ISM, galaxies: formation, galaxies: high-redshift",

author = "Y. Tamura and K. Mawatari and T. Hashimoto and Inoue, {A. K.} and E. Zackrissonm and L. Christensen and C. Binggeli and Y. Matsuda and H. Matsuo and Takeuchi, {T. T.} and Asano, {R. S.} and K. Sunaga and I. Shimizu and T. Okamoto and N. Yoshida and M. Lee and T. Shibuya and Y. Taniguchi and H. Umehata and B. Hatsukade and K. Kohno and K. Ota",

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year = "2019",

doi = "10.1017/S1743921319002436",

language = "English",

volume = "15",

pages = "211--215",

journal = "Proceedings of the International Astronomical Union",

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TY - JOUR

T1 - Detections of far-infrared [OIII] and dust emission in a galaxy at z = 8.312

T2 - Early metal enrichment in the heart of the reionization era

AU - Tamura, Y.

AU - Mawatari, K.

AU - Hashimoto, T.

AU - Inoue, A. K.

AU - Zackrissonm, E.

AU - Christensen, L.

AU - Binggeli, C.

AU - Matsuda, Y.

AU - Matsuo, H.

AU - Takeuchi, T. T.

AU - Asano, R. S.

AU - Sunaga, K.

AU - Shimizu, I.

AU - Okamoto, T.

AU - Yoshida, N.

AU - Lee, M.

AU - Shibuya, T.

AU - Taniguchi, Y.

AU - Umehata, H.

AU - Hatsukade, B.

AU - Kohno, K.

AU - Ota, K.

PY - 2019

Y1 - 2019

N2 - We present ALMA detection of the [O iii] 88 μm line and 850 μm dust continuum emission in a Y-dropout Lyman break galaxy, MACS0416-Y1. The [O iii] detection confirms the object with a spectroscopic redshift to be z = 8.3118±0.0003. The 850 μm continuum intensity (0.14 mJy) implies a large dust mass on the order of 4×106M . The ultraviolet-to-far infrared spectral energy distribution modeling, where the [O iii] emissivity model is incorporated, suggests the presence of a young (τage 4 Myr), star-forming (SFR 60M yr-1), and moderately metal-polluted (Z 0.2Z ) stellar component with a stellar mass of 3 × 108M . An analytic dust mass evolution model with a single episode of star formation does not reproduce the metallicity and dust mass in 4 Myr, suggesting an underlying evolved stellar component as the origin of the dust mass.

AB - We present ALMA detection of the [O iii] 88 μm line and 850 μm dust continuum emission in a Y-dropout Lyman break galaxy, MACS0416-Y1. The [O iii] detection confirms the object with a spectroscopic redshift to be z = 8.3118±0.0003. The 850 μm continuum intensity (0.14 mJy) implies a large dust mass on the order of 4×106M . The ultraviolet-to-far infrared spectral energy distribution modeling, where the [O iii] emissivity model is incorporated, suggests the presence of a young (τage 4 Myr), star-forming (SFR 60M yr-1), and moderately metal-polluted (Z 0.2Z ) stellar component with a stellar mass of 3 × 108M . An analytic dust mass evolution model with a single episode of star formation does not reproduce the metallicity and dust mass in 4 Myr, suggesting an underlying evolved stellar component as the origin of the dust mass.

KW - galaxies: ISM

KW - galaxies: formation

KW - galaxies: high-redshift

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