Fig. 1

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Image of the Lagoon Nebula observed using B, V, and R broadband filters. Blue and green stars respectively mark the positions of O- and early B-type stars associated with the M8 region, according to Table 1 of Wright et al. (2019). The dashed black box marks the molecular gas examined by Tothill et al. (2002). Data credits: Felipe Mac Auliffe (https://clusteroneobservatory.com).
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