Palomar 15 has [Fe/H] = -1.94 dex with no significant abundance spreads, alpha-element patterns typical of outer halo objects, and one star showing elevated Na and Al suggestive of multiple populations.
B., Bolte, M., Harris, W
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Chemical composition of the outer halo globular cluster Palomar 15
Palomar 15 has [Fe/H] = -1.94 dex with no significant abundance spreads, alpha-element patterns typical of outer halo objects, and one star showing elevated Na and Al suggestive of multiple populations.