A First Look at the Abundance Pattern—O/H, C/O, and Ne/O—in z > 7 Galaxies with JWST/NIRSpec
A First Look at the Abundance Pattern—O/H, C/O, and Ne/O—in z > 7 Galaxies with JWST/NIRSpec
复制标题
使用 JWST/NIRSpec 初步了解 z > 7 星系中的丰度模式 - O/H、C/O 和 Ne/O
DOI:
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发表时间:
2022
影响因子:
7.9
通讯作者:
J. Kartaltepe
中科院分区:
文献类型:
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作者:
K. Arellano;D. Berg;J. Chisholm;P. Arrabal Haro;M. Dickinson;S. Finkelstein;F. Leclercq;N. Rogers;R. Simons;E. Skillman;J. Trump;J. Kartaltepe
We analyze the rest-frame near-UV and optical nebular spectra of three z > 7 galaxies from the Early Release Observations taken with the Near-Infrared Spectrograph (NIRSpec) on the James Webb Space Telescope (JWST). These three high-z galaxies show the detection of several strong emission nebular lines, including the temperature-sensitive [O iii] λ4363 line, allowing us to directly determine the nebular conditions and abundances for O/H, C/O, and Ne/O. We derive O/H abundances and ionization parameters that are generally consistent with other recent analyses. We analyze the mass–metallicity relationship (i.e., slope) and its redshift evolution by comparing between the three z > 7 galaxies and local star-forming galaxies. We also detect the C iii] λλ1907, 1909 emission in a z > 8 galaxy from which we determine the most distant C/O abundance to date. This valuable detection of log(C/O) = −0.83 ± 0.38 provides the first test of C/O redshift evolution out to high redshift. For neon, we use the high-ionization [Ne iii] λ3869 line to measure the first Ne/O abundances at z > 7, finding no evolution in this α-element ratio. We explore the tentative detection of [Fe ii] and [Fe iii] lines in a z > 8 galaxy, which would indicate a rapid buildup of metals. Importantly, we demonstrate that properly flux-calibrated and higher-S/N spectra are crucial to robustly determine the abundance pattern in z > 7 galaxies with NIRSpec/JWST.
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DOI:
10.3847/1538-4357/abf8b9
发表时间:
2021-05
期刊:
The Astrophysical Journal
影响因子:
--
作者:
N. Rogers;E. Skillman;R. Pogge;D. Berg;J. Moustakas;K. Croxall;Jiayi Sun
通讯作者:
N. Rogers;E. Skillman;R. Pogge;D. Berg;J. Moustakas;K. Croxall;Jiayi Sun
影响因子:
4.8
作者:
Li, Qi;Narayanan, Desika;Davé, Romeel
通讯作者:
Davé, Romeel
DOI:
10.3847/1538-4357/ac947d
发表时间:
2022-09
期刊:
The Astrophysical Journal
影响因子:
--
作者:
N. Rogers;E. Skillman;R. Pogge;D. Berg;K. Croxall;Jo Bartlett;K. Arellano-Córdova;J. Moustakas
通讯作者:
N. Rogers;E. Skillman;R. Pogge;D. Berg;K. Croxall;Jo Bartlett;K. Arellano-Córdova;J. Moustakas
DOI:
10.3847/1538-4357/ab7eab
发表时间:
2020
期刊:
The Astrophysical Journal
影响因子:
--
作者:
Berg, Danielle A.;Pogge, Richard W.;Skillman, Evan D.;Croxall, Kevin V.;Moustakas, John;Rogers, Noah S.;Sun, Jiayi
通讯作者:
Sun, Jiayi
影响因子:
4.8
作者:
Topping, Michael W;Shapley, Alice E;Reddy, Naveen A;Sanders, Ryan L;Coil, Alison L;Kriek, Mariska;Mobasher, Bahram;Siana, Brian
通讯作者:
Siana, Brian