English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Oxygen and zinc in the Galactic bulge are key elements for the understandingof the bulge chemical evolution. Oxygen-to-iron abundance ratios provide a mostrobust indicator of the star formation rate and chemical evolution of thebulge. Zinc is enhanced in metal-poor stars, behaving as an $\alpha$-element,and its production may require nucleosynthesis in hypernovae. Most of theneutral gas at high redshift is in damped Lyman-alpha systems (DLAs), where Znis also observed to behave as an alpha-element. The aim of this work is thederivation of the alpha-element oxygen, together with nitrogen, and theiron-peak element zinc abundances in 417 bulge giants, from moderate resolution(R~22,000) FLAMES-GIRAFFE spectra. For stars in common with a set of UVESspectra with higher resolution (R~45,000), the data are intercompared. Theresults are compared with literature data and chemodynamical models.

Oxygen and zinc abundances in 417 Galactic bulge red giants