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The role of ultraviolet imaging in studies of resolved and unresolved young stellar populations. M31 and M33

Bianchi, Luciana; Hodge, Paul; Williams, Benjamin +2 more

We discuss the relevance of UV data in the detection and characterization of hot massive stars and young stellar populations in galaxies. We show results from recent extensive surveys in M31 and M33 with Hubble Space Telescope (HST) multi-wavelength data including UV filters, which imaged several regions at a linear resolution (projected) of less …