JWST NIRCam and MIRI Reveal the Dust-Producing AGB Population of NGC 6822

arXiv:2607.11682 · astro-ph.GA, astro-ph.SR · Submitted 2026-07-13 · Read on arXiv

Conor Nally, Olivia C. Jones, Laura Lenkić, Annette M. N. Ferguson, Nolan Habel, Alec S. Hirschauer, Margaret Meixner, P. J. Kavanagh, Martha L. Boyer, Omnarayani Nayak, B. Sargent, P. Scicluna

astro-ph.GA, astro-ph.SR

Submitted: 2026-07-13

Comments: 19 pages, 14 figures. Accepted for publication in MNRAS. The accompanying catalogue contains photometry for 864,114 NIRCam sources and 17,235 MIRI sources, including derived effective temperatures and bolometric luminosities for 119,621 stars and dust-production rates for 1226 evolved stars. The catalogue will be available through VizieR upon publication

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Metallicity — 24× in this paper · explained in 3 episodes
• Trace — 6× in this paper · explained in 2 episodes
• Core — 5× in this paper · explained in 2 episodes
• Abundance — 4× in this paper · explained in 1 episode
• Aperture — 4× in this paper · explained in 1 episode
• Calibration — 2× in this paper · explained in 7 episodes
• Fidelity — 2× in this paper · explained in 2 episodes
• Accuracy — 1× in this paper · explained in 1 episode
• Akaike Information Criterion — 1× in this paper
• Aperture Photometry — 1× in this paper · explained in 1 episode
• Degeneracy — 1× in this paper · explained in 3 episodes
• Robustness — 1× in this paper · explained in 5 episodes
• Society of Photo-Optical Instrumentation Engineers — 1× in this paper
• Star Formation Rate (SFR) — 1× in this paper · explained in 5 episodes
• Systematic Bias — 1× in this paper · explained in 3 episodes

Sources

• Investigating the metallicity dependence of the mass-loss rate relation of red supergiants

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