Rotation and Hα Emission in a Young SMC Cluster: A Spectroscopic View of NGC 330
Paul I. Cristofari,
Andrea K. Dupree,
Antonino P. Milone
et al.
Abstract:We present an analysis of high-resolution optical spectra recorded for 30 stars of the split extended main-sequence turnoff of the young (∼40 Myr) Small Magellanic Cloud globular cluster NGC 330. Spectra were obtained with the Michigan/Magellan Fiber System and Magellan Inamori Kyocera Echelle spectrographs located on the Magellan-Clay 6.5 m telescope. These spectra revealed the presence of Be stars, occupying primarily the cool side of the split main sequence. Rotational velocity (
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