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 use KiDS weak lensing data to measure variations in mean halo mass as afunction of several key galaxy properties (namely: stellar colour, specificstar formation rate, Sersic index, and effective radius) for a volume-limitedsample of GAMA galaxies in a narrow stellar mass range ($M_* \sim 2$--$5 \times10^{10}$ Msol). This mass range is particularly interesting, inasmuch as it iswhere bimodalities in galaxy properties are most pronounced, and near to thebreak in both the galaxy stellar mass function and the stellar-to-halo massrelation (SHMR). In this narrow mass range, we find that both size and Sersicindex are better predictors of halo mass than either colour or SSFR, with thedata showing a slight preference for Sersic index. In other words, we find thatmean halo mass is more tightly correlated with galaxy structure than eitherpast star formation history or current star formation rate. Our results lead toan approximate lower bound on the dispersion in halo masses among $\log M_*\approx {10.5}$ galaxies: we find that the dispersion is $\gtrsim 0.3$ dex.This would imply either that offsets from the mean SHMR are closely coupled tosize/structure, or that the dispersion in the SHMR is larger than past resultshave suggested. Our results thus provide new empirical constraints on therelationship between stellar and halo mass assembly at this particularlyinteresting mass range.

GAMA+KiDS: Empirical correlations between halo mass and other galaxy properties near the knee of the stellar-to-halo mass relation