NGC 6366 is similar in composition to
M 71 or
NGC 6342.[7] It is metal-rich for a globular cluster, and all of its stars appears to have formed in the same epoch.[1]
^
abPuls, Arthur A.; Alves-Brito, Alan; Campos, Fabíola; Dias, Bruno; Barbuy, Beatriz (2018), "Chemical analysis of eight giant stars of the globular cluster NGC 6366", Monthly Notices of the Royal Astronomical Society, 476: 690–704,
arXiv:1801.09968,
doi:
10.1093/mnras/sty267
^Johnson, Christian I.; Caldwell, Nelson; Rich, R. Michael; Pilachowski, Catherine A.; Hsyu, Tiffany (2016), "The Chemical Composition of Red Giant Branch Stars in the Galactic Globular Clusters NGC 6342 and NGC 6366", The Astronomical Journal, 152 (1): 21,
arXiv:1606.08491,
Bibcode:
2016AJ....152...21J,
doi:10.3847/0004-6256/152/1/21,
S2CID19812549