Star formation history in Canis Major. Recently published by A&A “Star formation history of Canis Major OB1” of T. Santos-Silva
Stars in several star forming regions are observed with a spread in age. This support the idea that star formation is a “slow” process which can propagate across a molecular cloud over million of years (as suggested, for instance, by the Palla & Stahler 2000 study), while several authors have instead suggested that star formation is a “fast” process (e.g.
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