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

Globular clusters (GCs) are bright objects that span a wide range ofgalactocentric distances, and are thus probes of the structure of dark matter(DM) haloes. In this work, we explore whether the projected radial profiles ofGCs can be used to infer the structural properties of their host DM haloes. Weuse the simulated GC populations in a sample of 166 central galaxies from the$(34.4~\rm cMpc)^3$ periodic volume of the E-MOSAICS project. We find that moremassive galaxies host stellar and GC populations with shallower densityprofiles that are more radially extended. In addition, the metal-poor GCsubpopulations tend to have shallower and more extended profiles than themetal-rich subsamples, which we relate to the preferentially accreted origin ofthe metal-poor GCs. We find strong correlations between the slopes andeffective radii of the radial profiles of the GC populations and the structuralproperties of the DM haloes, such as their power-law slopes, scale radii, andconcentration parameters. Accounting for a dependence on the galaxy stellarmass decreases the scatter of the two-dimensional relations. This suggests thatthe projected number counts of GCs, combined with their galaxy mass, trace thedensity profile of the DM halo of their host galaxy. When applied toextragalactic GC systems, we recover the scale radii and the extent of the DMhaloes of a sample of ETGs with uncertainties smaller than $0.2~\rm dex$. Thus,extragalactic GC systems provide a novel avenue to explore the structure of DMhaloes beyond the Local Group.

Globular clusters as tracers of the dark matter halo: insights from the E-MOSAICS simulations