Photometric detection at 7.7 μm of a galaxy beyond redshift 14 with JWST/MIRI

2024/05/28 by Jakob M. Helton, Helton, Jakob M., George H. Rieke +73 · 1 voice · 9 citations
Engineering · Physics and Astronomy · #Astronomical Observations and Instrumentation #Astronomy and Astrophysical Research #Stellar, planetary, and galactic studies #astro-ph.GA

paper · pdf · doi:10.48550/arxiv.2405.18462

openalex publication_date 2024/05/28 · openalex created_date 2024/05/31 · openalex updated_date 2026/08/01

Abstract

The James Webb Space Telescope (JWST) has spectroscopically confirmed numerous galaxies at z > 10. While weak rest-ultraviolet emission lines have only been seen in a handful of sources, the stronger rest-optical emission lines are highly diagnostic and accessible at mid-infrared wavelengths with the Mid-Infrared Instrument (MIRI) of JWST. We report the photometric detection of the distant spectroscopically confirmed galaxy JADES-GS-z14-0 at z = 14.32^+0.08_-0.20 with MIRI at 7.7 μm. The most plausible solution for the stellar population properties is that this galaxy contains half a billion solar masses in stars with a strong burst of star formation in the most recent few million years. For this model, at least one-third of the flux at 7.7 μm comes from the rest-optical emission lines Hβ and/or [OIII]λλ4959,5007. The inferred properties of JADES-GS-z14-0 suggest rapid mass assembly and metal enrichment during the earliest phases of galaxy formation. This work demonstrates the unique power of mid-infrared observations in understanding galaxies at the redshift frontier.

Cited by

• JWST Advanced Deep Extragalactic Survey (JADES) Data Release 5: Photometrically Selected Galaxy Candidates at z > 8
• Ionizing Photon Production Efficiencies and Chemical Abundances at Cosmic Dawn Revealed by Ultra-Deep Rest-Frame Optical Spectroscopy of JADES-GS-z14-0
• Dark Secrets of Baryons: Illuminating Dark Matter-Baryon Interactions with JWST
• JWST provides a new view of cosmic dawn: latest developments in studies of early galaxies
• Spectroscopic Confirmation of a Large and Luminous Galaxy with Weak Emission Lines at <i>z</i> = 13.53
• Probing small-scale dark matter clumping with the large-scale 21-cm power spectrum
• Discovery of a Little Red Dot candidate at z\gtrsim10 in COSMOS-Web based on MIRI-NIRCam selection
• JADES-GS-z14-1: A Compact, Faint Galaxy at z≈14 with Weak Metal Lines from Extremely Deep JWST MIRI, NIRCam, and NIRSpec Observations
• Beyond Extreme Burstiness: Evolving Star Formation Efficiency as the Key to Early Galaxy Abundance

Discussions

• The original image of JADES-GS-z14-0, now the most distant galaxy ever discovered, from the original article, as observed by JWST. arxiv.org/abs/2405.184... 🔭 🧪 [bsky, 10 points, 0 comments]

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