Weekly Update from the Open Journal of Astrophysics 24/10/2026

It’s time for another Saturday update of activity at the Open Journal of Astrophysics. Since the last update we have published a further four papers, bringing the number in Volume 9 (2026) to 249 and the total so far published by OJAp up to 697. I continue to include the posts made on our Mastodon account (on Fediscience); these announcements also contain a clickable form of the DOI for each paper. Our Mastodon account has regular updates and other announcements from OJAp too, including posts from the OJAp blog. The first paper this week was published on Tuesday 20th October in the folder Astrophysics of Galaxies. The title is “The Metallicity Distribution of the Ultra-Faint Dwarf Galaxy Segue 1” by Daisy Bissonette (U. Chicago, USA) and 8 others based in the USA, Australia and Canada. The article explains that new data on the metallicity of ultra-faint dwarf galaxy Segue 1 reveal a continuous, short-duration episode of star formation and chemical enrichment, confirming its…