JWST observations of Terzan 5 reveal multiple stellar populations with ages of 12.5 and 4.7 Gyr, plus hints of a 3.8 Gyr component, suggesting a multi-epoch formation history.
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Photometric study of Glimpse-C02 yields distance 6.3 kpc, age 11.9 Gyr, [Fe/H] = -0.30, and mass 3.57e4 solar masses, classifying it as an old metal-rich bulge globular cluster.
NGC 6553 is a metal-rich globular cluster that formed in situ in the Galactic bulge, shown by its abundance patterns, multiple populations, and chemical DNA tests.
citing papers explorer
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The multi-age stellar populations of Terzan 5 as revealed by JWST
JWST observations of Terzan 5 reveal multiple stellar populations with ages of 12.5 and 4.7 Gyr, plus hints of a 3.8 Gyr component, suggesting a multi-epoch formation history.
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Revealing the stellar population of the ultra-obscured Galactic globular cluster Glimpse-C02
Photometric study of Glimpse-C02 yields distance 6.3 kpc, age 11.9 Gyr, [Fe/H] = -0.30, and mass 3.57e4 solar masses, classifying it as an old metal-rich bulge globular cluster.
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The Bulge Cluster Origin (BulCO) survey with CRIRES at the ESO-VLT: a chemical screening of the Globular Cluster NGC 6553
NGC 6553 is a metal-rich globular cluster that formed in situ in the Galactic bulge, shown by its abundance patterns, multiple populations, and chemical DNA tests.