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

Accurate metallicities of RR Lyrae are extremely important in constrainingperiod-luminosity-metallicity relationships (PLZ), particularly in thenear-infrared. We analyse 69 high-resolution spectra of Galactic RR Lyrae starsfrom the Southern African Large Telescope (SALT). We measure metallicities of58 of these RR Lyrae stars with typical uncertainties of 0.13 dex. All but oneRR Lyrae in this sample has accurate ({\sigma}_parallax ~ 10%) parallax fromGaia. Combining these new high resolution spectroscopic abundances with similardeterminations from the literature for 93 stars, we present new PLZrelationships in WISE W1 and W2 magnitudes, and the Wesenheit magnitudesW(W1,V-W1) and W(W2,V-W2).

Metallicities from high resolution spectra of 49 RR Lyrae Variables