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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Pages (from-to)	211-215
Number of pages	5
Journal	Proceedings of the International Astronomical Union
Volume	15
Issue number	S341
DOIs	https://doi.org/10.1017/S1743921319002436
Publication status	Published - 2019
Externally published	Yes

Keywords

galaxies: ISM
galaxies: formation
galaxies: high-redshift

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1017/S1743921319002436

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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",

note = "Publisher Copyright: {\textcopyright} International Astronomical Union 2020.",

year = "2019",

doi = "10.1017/S1743921319002436",

language = "English",

volume = "15",

pages = "211--215",

journal = "Proceedings of the International Astronomical Union",

issn = "1743-9213",

publisher = "Cambridge University Press",

number = "S341",

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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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U2 - 10.1017/S1743921319002436

DO - 10.1017/S1743921319002436

M3 - Article

AN - SCOPUS:85106811396

SN - 1743-9213

VL - 15

SP - 211

EP - 215

JO - Proceedings of the International Astronomical Union

JF - Proceedings of the International Astronomical Union

IS - S341

ER -

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

Keywords

ASJC Scopus subject areas

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