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This is a Quantitative Study study.

October 16, 2025Open Access

Balmer Decrement and IRX Break in Tracing Dust Attenuation at Scales of Individual Star-forming Regions in NGC 628

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Analysis reveals a shift in the dust attenuation correlation in star-forming regions, indicating implications for understanding ISM evolution.

About three fifths of the ${ m {HII}}$ regions align with the dust attenuation relationship, indicating a correlation.
Nearly 27% of regions show $E(B-V)_{ m IRX} > E(B-V)_{{ m H}α/{ m H}β}$, suggesting variability in dust attenuation effects.
The study utilizes data from AstroSat, JWST, and MUSE to examine indicators of dust attenuation in star-forming regions.
Findings suggest that the transition of interstellar medium phases impacts the dust attenuation ratio and correlation.

Qiao et al. (2025) studied this question.

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Analysis reveals a shift in the dust attenuation correlation in star-forming regions, indicating implications for understanding ISM evolution.