X-rays from Cygnus. The paper: “X-ray spectral characterization of the young Cygnus OB2 population” of E. Flaccomio (INAF-OAPA) accepted for publication by ApJS
OB associations are objects of great importance, since they contain a rich population of OB stars. Despite their paucity, OB stars have a strong impact on the evolution of their parental clouds, nearby stars, and the whole Galaxy. For instance, their intense UV emission affects the evolution of the parental cloud and the star formation process in it, sometimes triggering
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