Schouws, S ORCID: 0000-0001-9746-0924, Bouwens, RJ
ORCID: 0000-0002-4989-2471, Ormerod, K
ORCID: 0000-0003-2000-3420, Smit, R
ORCID: 0000-0001-8034-7802, Algera, H
ORCID: 0000-0002-4205-9567, Sommovigo, L
ORCID: 0000-0002-2906-2200, Hodge, J
ORCID: 0000-0001-6586-8845, Ferrara, A
ORCID: 0000-0002-9400-7312, Oesch, PA
ORCID: 0000-0001-5851-6649, Rowland, LE
ORCID: 0009-0009-2671-4160, van Leeuwen, I
ORCID: 0009-0005-6803-6805, Stefanon, M
ORCID: 0000-0001-7768-5309, Herard-Demanche, T
ORCID: 0000-0003-2164-7949, Fudamoto, Y
ORCID: 0000-0001-7440-8832, Röttgering, H
ORCID: 0000-0001-8887-2257 and van der Werf, P
ORCID: 0000-0002-4389-832X
(2025)
Detection of [O iii]88 μm in JADES-GS-z14-0 at z = 14.1793.
The Astrophysical Journal, 988 (1).
ISSN 0004-637X
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Abstract
We report the first successful Atacama Large Millimeter/submillimeter Array (ALMA) follow-up observations of a secure z > 10 JWST-selected galaxy, by robustly detecting (6.6σ) the [O iii]88 μm line in JADES-GS-z14-0 (hereafter GS-z14). The ALMA detection yields a spectroscopic redshift of z = 14.1793 ± 0.0007, and increases the precision on the prior redshift measurement of
from NIRSpec by ≳180×. Moreover, the redshift is consistent with that previously determined from a tentative detection (3.6σ) of C iii]1907,1909 (z = 14.178 ± 0.013), solidifying the redshift determination via multiple line detections. We measure a line luminosity of L[O iii]88 = (2.1 ± 0.5) × 108 L⊙, placing GS-z14 at the lower end, but within the scatter of, the local L[O iii]88–star formation rate relation. No dust continuum from GS-z14 is detected, suggesting an upper limit on the dust-to-stellar mass ratio of <2 × 10−3, consistent with dust production from supernovae with a yield yd < 0.3 M⊙. Combining a previous JWST/MIRI photometric measurement of the [O iii]λλ4959,5007 Å and Hβ lines with Cloudy models, we find GS-z14 to be surprisingly metal-enriched (Z ∼ 0.05–0.2 Z⊙) a mere 300 Myr after the Big Bang. The detection of a bright oxygen line in GS-z14 thus reinforces the notion that galaxies in the early Universe undergo rapid evolution.
Item Type: | Article |
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Uncontrolled Keywords: | 0201 Astronomical and Space Sciences; 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics; 0306 Physical Chemistry (incl. Structural); Astronomy & Astrophysics; 5101 Astronomical sciences; 5107 Particle and high energy physics; 5109 Space sciences |
Subjects: | Q Science > QB Astronomy Q Science > QC Physics |
Divisions: | Astrophysics Research Institute |
Publisher: | American Astronomical Society |
Date of acceptance: | 9 March 2025 |
Date of first compliant Open Access: | 10 July 2025 |
Date Deposited: | 10 Jul 2025 16:06 |
Last Modified: | 10 Jul 2025 16:15 |
DOI or ID number: | 10.3847/1538-4357/adbf1b |
URI: | https://researchonline.ljmu.ac.uk/id/eprint/26762 |
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