Chemical evolution of the Galactic bulge as traced by microlensed dwarf and subgiant stars
Bensby, T; Feltzing, Sofia; Johnson, Jennifer A; Gould, A; Aden, Daniel; Asplund, Martin; Melendez, Jorge; Gal-Yam, Avishay; Lucatello, Sara; Sana, Hugues; Sumi, T; Mikaye, N; Suzuki, D; Han, C; Bond, I; Udalski, A
Context. The Bulge is the least understood major stellar population of the Milky Way. Most of what we know about the formation and evolution of the Bulge comes from bright giant stars. The underlying assumption that giants represent all the stars, and accurately trace the chemical evolution of a stellar population, is under debate. In particular, recent observations of a few microlensed dwarf stars give a very different picture of the evolution of the Bulge from that given by the giant stars....[Show more]
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