JWST observations show that over 90% of AGB stars in Sextans A are dust-poor oxygen-rich stars spanning a wide mass range, while a small subset of carbon stars from 1.25-1.5 solar mass progenitors formed 2-3 Gyr ago produce the strongest infrared excesses, and the F277W-F444W color serves as a dust
C., Abbott, R., et al.\ 2023, arXiv:2504.12940
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Dust in the very metal-poor galaxy Sextans A with JWST. I: Characterizing the evolved stellar population of Sextans A based on JWST observations and stellar evolution models
JWST observations show that over 90% of AGB stars in Sextans A are dust-poor oxygen-rich stars spanning a wide mass range, while a small subset of carbon stars from 1.25-1.5 solar mass progenitors formed 2-3 Gyr ago produce the strongest infrared excesses, and the F277W-F444W color serves as a dust