Image Details
Caption: Figure 14.
Left: curves show the W4 (22 μm) annular profiles for M31: uncorrected (blue) and after subtracting the W1-based contaminant estimate (orange). The W1-based subtraction suppresses central emission unassociated with star formation while preserving the star-forming ring/outer disk. Right: the same for FUV profiles. See Appendix B.
© 2026. The Author(s). Published by the American Astronomical Society.