DESI Data Release Archives

The abundance ratios, log(X/O), versus metallicity for nitrogen (top-left), neon (top-right), sulphur (bottom-left) and argon (bottom-right). The blue lines shows literature relations derived by Izotov et al. (2006), Andrews & Martini (2013), Nicholls et al. (2017) and Berg et al. (2012, 2019). The orange lines show the predicted relations from chemical evolution models for the Solar neighbourhood, Milky Way halo and bulge stars by Kobayashi et al. (2020). The cyan ⊙-sign shows the solar abundance ratio (Asplund et al. 2021). The pink datapoints in the top-left panel show a selection of galaxies with low metallicity and high N/O ratios as discussed in the text. All data points are coloured by the Gaussian kernel density of the plotted distribution. Typical uncertainties are shown by the black error bars in the top-left corner of each panel. -- astro-ph.GA

Astrochemistry, Astronomy & Telescopes, Imaging & Spectroscopy, Status Report

Electron Temperature Relations And The Direct N, O, Ne, S And Ar abundances Of 49959 Star-forming Galaxies In DESI Data Release 2

by Keith CowingJanuary 13, 2026January 13, 2026

We present the largest direct-method abundance catalogue of galaxies to date, containing measurements of 49959 star-forming galaxies at z<0.96 from DESI Data Release 2. By directly measuring electron temperatures across […]

DESI Data Release

Electron Temperature Relations And The Direct N, O, Ne, S And Ar abundances Of 49959 Star-forming Galaxies In DESI Data Release 2

Complex Water Systems Revealed On Early Mars

An Accidental Impact Crater Discovery

The Nancy Grace Roman Space Telescope Coronagraph Community Participation Program

Unveiling Microbial Communities And Biogeochemical Cycles In Antarctic Colored Snow

NASA Spaceline Current Awareness List #1,217 21 September 2026 (Space Life Science Research Results)