High- and Low-\(\alpha\) Disk Stars Separate Dynamically at all Ages

There is a dichotomy in the Milky Way in the \([\alpha/\)Fe]-[Fe/H] plane, in which stars fall into high-\(\alpha\), and low-\(\alpha\) sequences. The high-\(\alpha\) sequence comprises mostly old stars, and the low-\(\alpha\) sequence comprises primarily young stars. The origin of this dichotomy is...

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Veröffentlicht in:	arXiv.org 2019-03
Hauptverfasser:	Gandhi, Suroor S, Ness, Melissa K
Format:	Artikel
Sprache:	eng
Schlagworte:	Milky Way Galaxy Stars Stellar age Stellar evolution
Online-Zugang:	Volltext
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