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

We present results on the measured shapes of 832 galaxies in 11 galaxyclusters at 1.0 < z <1.4 from the GOGREEN survey. We measure the axis ratio($q$), the ratio of the minor to the major axis, of the cluster galaxies fromnear-infrared Hubble Space Telescope imaging using S\'ersic profile fitting andcompare them with a field sample. We find that the median $q$ of bothstar-forming and quiescent galaxies in clusters increases with stellar mass,similar to the field. Comparing the axis ratio distributions between clustersand the field in four mass bins, the distributions for star-forming galaxies inclusters are consistent with those in the field. Conversely, the distributionsfor quiescent galaxies in the two environments are distinct, most remarkably in$10.1\leq\log(M/{\rm M}_{\odot})<10.5$ where clusters show a flatterdistribution, with an excess at low $q$. Modelling the distribution with oblateand triaxial components, we find that the cluster and field sample differenceis consistent with an excess of flattened oblate quiescent galaxies inclusters. The oblate population contribution drops at high masses, resulting ina narrower $q$ distribution in the massive population than at lower masses.Using a simple accretion model, we show that the observed $q$ distributions andquenched fractions are consistent with a scenario where no morphologicaltransformation occurs for the environmentally quenched population in the twointermediate mass bins. Our results suggest that environmental quenchingmechanism(s) likely produce a population that has a different morphological mixthan those resulting from the dominant quenching mechanism in the field.

The GOGREEN Survey: Evidence of an excess of quiescent disks in clusters at $1.0