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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We have identified a sample of 41 low-mass high--oxygen abundance outliersfrom the mass--metallicity relation of star-forming galaxies measured byTremonti et al (2004). These galaxies, which have 8.6 < [12 + log(O/H)] < 9.3over a range of -14.4 > M_B > -19.1 and 7.4 < log M_*/M_solar < 10, aresurprisingly non-pathological. They have typical specific star formation rates,are fairly isolated and, with few exceptions, have no obvious companions.Morphologically, they are similar to dwarf spheroidal or dwarf ellipticalgalaxies. We predict that their observed high oxygen abundances are due torelatively low gas masses, concluding that these are transitional dwarfgalaxies nearing the end of their star formation activity.

Outliers from the Mass--Metallicity Relation I: A Sample of Metal-Rich Dwarf Galaxies from SDSS