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Evidence for rotation-induced mixing in evolved intermediate mass stars | | R. Smiljanic
; B. Barbuy
; J. R. De Medeiros
; A. Maeder
; | | Date: |
6 Mar 2006 | | Abstract: | Many observational results seem to indicate more efficient mixing processes in intermediate mass stars (5-20 M$_{odot}$) than the expected by the standard models. These processes are usually thought to be caused by stellar rotation. Our recent analysis of 19 evolved intermediate mass stars has found them to display different efficiencies of internal mixing. The comparison of these results, and others from the literature, with rotating and non-rotating stellar evolutionary models led us to find, for the first time, an important correlation between stellar mass and the [N/C] ratio; the kind of correlation expected to be produced by a rotation-induced mixing. | | Source: | arXiv, astro-ph/0603128 | | Services: | Forum | Review | PDF | Favorites | |
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