ALMA Reveals Potential Localized Dust Enrichment from Massive Star Clusters in II Zw 40

Understand

We present subarcsecond images of submillimeter CO and continuum emission from a local galaxy forming massive star clusters: the blue compact dwarf galaxy II Zw 40.

• At $\sim$0.4" resolution (20 pc), the CO(3-2), CO(1-0), 3mm and 870${\mu}$m continuum maps illustrate star formation on the scales of individual molecular clouds.
• Dust contributes about a third of the 870${\mu}$m continuum emission, with free-free accounting for the rest.
• On these scales, there is not a good correspondence between gas, dust, and free-free emission.