Five globular cluster candidates in the lensed Sparkler galaxy at z=1.38 have a mean age of 1.9±0.4 Gyr from JWST photometry, consistent with a Planck18 ΛCDM universe.
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Time to Sparkler. Accurate ages of lensed globular clusters at $z=1.4$ with JWST photometry
Five globular cluster candidates in the lensed Sparkler galaxy at z=1.38 have a mean age of 1.9±0.4 Gyr from JWST photometry, consistent with a Planck18 ΛCDM universe.