{'fraction_non_alphanumeric': 0.01943198804185351, 'fraction_numerical': 0.026905829596412557, 'mean_word_length': 4.403225806451613, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
THE CN INHOMOGENEITY OF THE GLOBULAR CLUSTER NGC 6637 (M69)

Spectra have been obtained of a sample of red giants in the relatively metal-rich disk globular cluster NGC 6637. The distribution of λ4215 CN band strengths is found to be bimodal. Among a sample of 24 stars, the ratio by number of those with strong CN and weak CN bands is found to be 1.0, although there is some uncertainty attached to this value due to the difficulty of identifying potential nonmembers among the observed stars. It is suggested that much higher incidences of CN-strong stars, such as are found in some halo globular clusters, are likely to be rare among the disk population of clusters.