A solar metallicity galaxy at z > 7? Possible detection of the [N II] 122 mu m and [O III] 52 mu m lines

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Standard

A solar metallicity galaxy at z > 7? Possible detection of the [N II] 122 mu m and [O III] 52 mu m lines. / Killi, Meghana; Watson, Darach; Fujimoto, Seiji; Akins, Hollis; Knudsen, Kirsten; Richard, Johan; Harikane, Yuichi; Rigopoulou, Dimitra; Rizzo, Francesca; Ginolfi, Michele; Popping, Gergo; Kokorev, Vasilii.

In: Monthly Notices of the Royal Astronomical Society, Vol. 521, No. 2, 14.03.2023, p. 2526-2534.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Killi, M, Watson, D, Fujimoto, S, Akins, H, Knudsen, K, Richard, J, Harikane, Y, Rigopoulou, D, Rizzo, F, Ginolfi, M, Popping, G & Kokorev, V 2023, 'A solar metallicity galaxy at z > 7? Possible detection of the [N II] 122 mu m and [O III] 52 mu m lines', Monthly Notices of the Royal Astronomical Society, vol. 521, no. 2, pp. 2526-2534. https://doi.org/10.1093/mnras/stad687

APA

Killi, M., Watson, D., Fujimoto, S., Akins, H., Knudsen, K., Richard, J., Harikane, Y., Rigopoulou, D., Rizzo, F., Ginolfi, M., Popping, G., & Kokorev, V. (2023). A solar metallicity galaxy at z > 7? Possible detection of the [N II] 122 mu m and [O III] 52 mu m lines. Monthly Notices of the Royal Astronomical Society, 521(2), 2526-2534. https://doi.org/10.1093/mnras/stad687

Vancouver

Killi M, Watson D, Fujimoto S, Akins H, Knudsen K, Richard J et al. A solar metallicity galaxy at z > 7? Possible detection of the [N II] 122 mu m and [O III] 52 mu m lines. Monthly Notices of the Royal Astronomical Society. 2023 Mar 14;521(2):2526-2534. https://doi.org/10.1093/mnras/stad687

Author

Killi, Meghana ; Watson, Darach ; Fujimoto, Seiji ; Akins, Hollis ; Knudsen, Kirsten ; Richard, Johan ; Harikane, Yuichi ; Rigopoulou, Dimitra ; Rizzo, Francesca ; Ginolfi, Michele ; Popping, Gergo ; Kokorev, Vasilii. / A solar metallicity galaxy at z > 7? Possible detection of the [N II] 122 mu m and [O III] 52 mu m lines. In: Monthly Notices of the Royal Astronomical Society. 2023 ; Vol. 521, No. 2. pp. 2526-2534.

Bibtex

@article{7104562389a341b38eb0edea9d4ebe53,
title = "A solar metallicity galaxy at z > 7? Possible detection of the [N II] 122 mu m and [O III] 52 mu m lines",
abstract = "We present the first detection of the [NII] 122 mu m and [O III ] 52 mu m lines for a reionization-epoch galaxy. Based on these lines and previous [C II ] 158 mu m and [O III ] 88 mu m measurements, using two different radiati ve transfer models of the interstellar medium, we estimate an upper limit on electron density of < 500 cm(-3) and an approximate gas-phase metallicity of Z/Z(circle dot) similar to 1.1 +/- 0.2 for A1689-zD1, a gravitationally lensed dusty galaxy at z = 7.133. Other measurements or indicators of metallicity so far in galaxy interstellar media at z greater than or similar to 6 are typically an order of magnitude lower than this. The unusually high metallicity makes A1689-zD1 inconsistent with the fundamental metallicity relation, although there is likely significant dust obscuration of the stellar mass, which may partly resolve the inconsistency. Given a solar metallicity, the dust-to-metals ratio is a factor of several lower than expected, hinting that galaxies be yond z similar to 7 may hav e lower dust formation efficiency . Finally , the inferred nitrogen enrichment compared to oxygen, on which the metallicity measurement depends, indicates that star formation in the system is older than about 250 Myr, pushing the beginnings of this galaxy to z > 10.",
keywords = "ISM:abundances, galaxies:high-redshift, galaxies:individual:(A1689-zD1), galaxies:ISM, submillimetre:galaxies, N/O ABUNDANCE RATIOS, LYMAN-BREAK GALAXY, BIG 3 DRAGONS, MASS-METALLICITY, STAR-FORMATION, INTERSTELLAR-MEDIUM, DUST-CONTINUUM, PHYSICAL CONDITIONS, OIII 88-MU-M, ALMA",
author = "Meghana Killi and Darach Watson and Seiji Fujimoto and Hollis Akins and Kirsten Knudsen and Johan Richard and Yuichi Harikane and Dimitra Rigopoulou and Francesca Rizzo and Michele Ginolfi and Gergo Popping and Vasilii Kokorev",
year = "2023",
month = mar,
day = "14",
doi = "10.1093/mnras/stad687",
language = "English",
volume = "521",
pages = "2526--2534",
journal = "Royal Astronomical Society. Monthly Notices",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "2",

}

RIS

TY - JOUR

T1 - A solar metallicity galaxy at z > 7? Possible detection of the [N II] 122 mu m and [O III] 52 mu m lines

AU - Killi, Meghana

AU - Watson, Darach

AU - Fujimoto, Seiji

AU - Akins, Hollis

AU - Knudsen, Kirsten

AU - Richard, Johan

AU - Harikane, Yuichi

AU - Rigopoulou, Dimitra

AU - Rizzo, Francesca

AU - Ginolfi, Michele

AU - Popping, Gergo

AU - Kokorev, Vasilii

PY - 2023/3/14

Y1 - 2023/3/14

N2 - We present the first detection of the [NII] 122 mu m and [O III ] 52 mu m lines for a reionization-epoch galaxy. Based on these lines and previous [C II ] 158 mu m and [O III ] 88 mu m measurements, using two different radiati ve transfer models of the interstellar medium, we estimate an upper limit on electron density of < 500 cm(-3) and an approximate gas-phase metallicity of Z/Z(circle dot) similar to 1.1 +/- 0.2 for A1689-zD1, a gravitationally lensed dusty galaxy at z = 7.133. Other measurements or indicators of metallicity so far in galaxy interstellar media at z greater than or similar to 6 are typically an order of magnitude lower than this. The unusually high metallicity makes A1689-zD1 inconsistent with the fundamental metallicity relation, although there is likely significant dust obscuration of the stellar mass, which may partly resolve the inconsistency. Given a solar metallicity, the dust-to-metals ratio is a factor of several lower than expected, hinting that galaxies be yond z similar to 7 may hav e lower dust formation efficiency . Finally , the inferred nitrogen enrichment compared to oxygen, on which the metallicity measurement depends, indicates that star formation in the system is older than about 250 Myr, pushing the beginnings of this galaxy to z > 10.

AB - We present the first detection of the [NII] 122 mu m and [O III ] 52 mu m lines for a reionization-epoch galaxy. Based on these lines and previous [C II ] 158 mu m and [O III ] 88 mu m measurements, using two different radiati ve transfer models of the interstellar medium, we estimate an upper limit on electron density of < 500 cm(-3) and an approximate gas-phase metallicity of Z/Z(circle dot) similar to 1.1 +/- 0.2 for A1689-zD1, a gravitationally lensed dusty galaxy at z = 7.133. Other measurements or indicators of metallicity so far in galaxy interstellar media at z greater than or similar to 6 are typically an order of magnitude lower than this. The unusually high metallicity makes A1689-zD1 inconsistent with the fundamental metallicity relation, although there is likely significant dust obscuration of the stellar mass, which may partly resolve the inconsistency. Given a solar metallicity, the dust-to-metals ratio is a factor of several lower than expected, hinting that galaxies be yond z similar to 7 may hav e lower dust formation efficiency . Finally , the inferred nitrogen enrichment compared to oxygen, on which the metallicity measurement depends, indicates that star formation in the system is older than about 250 Myr, pushing the beginnings of this galaxy to z > 10.

KW - ISM:abundances

KW - galaxies:high-redshift

KW - galaxies:individual:(A1689-zD1)

KW - galaxies:ISM

KW - submillimetre:galaxies

KW - N/O ABUNDANCE RATIOS

KW - LYMAN-BREAK GALAXY

KW - BIG 3 DRAGONS

KW - MASS-METALLICITY

KW - STAR-FORMATION

KW - INTERSTELLAR-MEDIUM

KW - DUST-CONTINUUM

KW - PHYSICAL CONDITIONS

KW - OIII 88-MU-M

KW - ALMA

U2 - 10.1093/mnras/stad687

DO - 10.1093/mnras/stad687

M3 - Journal article

VL - 521

SP - 2526

EP - 2534

JO - Royal Astronomical Society. Monthly Notices

JF - Royal Astronomical Society. Monthly Notices

SN - 0035-8711

IS - 2

ER -

ID: 345315200