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Fig. 4


Spectra of the brightest cluster stars extracted from the MUSE data cube. The spectrum #1 is of MWC 137. Spectra #2 to #23 are B- and A-type stars in the cluster. Their spectral classification, indicated next to each spectrum, was based primarily on the Hα, Hβ, and O i 7774 equivalent widths. Spectra #24 to #39 are F- and G-type stars. Their classification is based primarily on the Ca ii 8542 and Na i 5889 equivalent widths. The numbering is consistent with Table 2 and Fig. 1. Gray areas block regions of the spectra with strong residuals from the telluric bands correction.

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