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The extended main-sequence turnoff clusters of the large magellanic cloud - Missing links in globular cluster evolution

Keller, Stefan; Mackey, Alasdair; Da Costa, Gary

Description

Recent observations of intermediate-age (1-3Gyr) massive star clusters in the Large Magellanic Cloud have revealed that the majority possess bifurcated or extended main-sequence turnoff (EMSTO) morphologies. This effect can be understood to arise from subsequent star formation among the stellar population with age differences between constituent stars amounting to 50-300Myr. Age spreads of this order are similarly invoked to explain the light-element abundance variations witnessed in ancient...[Show more]

CollectionsANU Research Publications
Date published: 2011
Type: Journal article
URI: http://hdl.handle.net/1885/68366
Source: Astrophysical Journal, The
DOI: 10.1088/0004-637X/731/1/22

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