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

Phosphorus (P) is a critical element for life on Earth yet the cosmicproduction sites of P are relatively uncertain. To understand how P has evolvedin the solar neighborhood, we measured abundances for 163 FGK stars over arange of -1.09 $<$ [Fe/H] $<$ 0.47 using observations from the Habitable-zonePlanet Finder (HPF) instrument on the Hobby-Eberly Telescope (HET). Atmosphericparameters were calculated by fitting a combination of astrometry, photometry,and Fe I line equivalent widths. Phosphorus abundances were measured bymatching synthetic spectra to a P I feature at 10529.52 angstroms. Our [P/Fe]ratios show that chemical evolution models generally under-predict P over theobserved metallicity range. Additionally, we find that the [P/Fe] differs by$\sim$ 0.1 dex between thin disk and thick disk stars that were identified withkinematics. The P abundances were compared with $\alpha$-elements, iron-peak,odd-Z, and s-process elements and we found that P in the disk most stronglyresembles the evolution of the $\alpha$-elements. We also find molar P/C andN/C ratios for our sample match the scatter seen from other abundance studies.Finally, we measure a [P/Fe] = 0.09 $\pm$ 0.1 ratio in one low-$\alpha$ halostar and probable Gaia-Sausage-Enceladus (GSE) member, an abundance ratio$\sim$ 0.3 - 0.5 dex lower than the other Milky Way disk and halo stars atsimilar metallicities. Overall, we find that P is likely most significantlyproduced by massive stars in core collapse supernovae (CCSNe) based on thelargest P abundance survey to-date.

The Galactic Distribution of Phosphorus: A Survey of 163 Disk and Halo Stars