Image Details
Caption: Figure 6.
Cutout images of the Cosmic Gems Arc in the observed HST and JWST filters. The cutout field of view is 4﹩\mathop{.}\limits{^{\prime\prime} }﹩8 × 4﹩\mathop{.}\limits{^{\prime\prime} }﹩8, and the images are shown with north up and east left. Filters are labeled in the upper-left corner of each panel with white text for HST images and gold for JWST images. The Cosmic Gems Arc extends to 5″ long in the JWST NIRCam images and is centered in the cutout images. The galaxy is undetected in F115W and all bluer filters. It is weakly detected in F125W and clearly detected in F140W and all redder filters. The JWST NIRCam F150W image (PSF FWHM 0﹩\mathop{.}\limits{^{\prime\prime} }﹩05) provides the best resolution of the Cosmic Gems Arc, revealing star clusters down to 1 pc in intrinsic size (A. Adamo et al. 2024). The nearby arc to the north has a photometric redshift of z ∼ 2.6.
© 2025. The Author(s). Published by the American Astronomical Society.