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

The gravitational lensing effect provides various ways to study the massenvironment of galaxies. We investigate how galaxy-galaxy(-galaxy) lensing canbe used to test models of galaxy formation and evolution. We consider twosemi-analytic galaxy formation models based on the Millennium Run N-bodysimulation: the Durham model by Bower et al. (2006) and the Garching model byGuo et al. (2011). We generate mock lensing observations for the two models,and then employ Fast Fourier Transform methods to compute second- andthird-order aperture statistics in the simulated fields for various galaxysamples. We find that both models predict qualitatively similar aperturesignals, but there are large quantitative differences. The Durham modelpredicts larger amplitudes in general. In both models, red galaxies exhibitstronger aperture signals than blue galaxies. Using these aperture measurementsand assuming a linear deterministic bias model, we measure relative bias ratiosof red and blue galaxy samples. We find that a linear deterministic bias isinsufficient to describe the relative clustering of model galaxies below tenarcmin angular scales. Dividing galaxies into luminosity bins, the aperturesignals decrease with decreasing luminosity for brighter galaxies, but increaseagain for fainter galaxies. This increase is likely an artifact due to too manyfaint satellite galaxies in massive group and cluster halos predicted by themodels. Our study shows that galaxy-galaxy(-galaxy) lensing is a sensitiveprobe of galaxy evolution.

Galaxy-galaxy(-galaxy) lensing as a sensitive probe of galaxy evolution