Image Details
Caption: Figure 2.
Galaxy subtraction of DF44. Left: sky-subtracted F350LP mosaic after masking compact sources and background galaxies. Middle: best-fit elliptical isophotal model constructed with photutils Ellipse. Right: smoothed residual image after subtraction of the model and masking of all sources that are not well fitted by a PSF model. Numerous compact sources become clearly visible after subtraction.
© 2026. The Author(s). Published by the American Astronomical Society.