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

Halo Abundance Matching has been used to construct a one-parameter mappingbetween galaxies and dark matter haloes by assuming that halo mass and galaxyluminosity (or stellar mass) are monotonically related. While this approach hasbeen reasonably successful, it is known that galaxies must be described by atleast two parameters, as can be seen from the two-parameter Fundamental Planeon which massive early-type galaxies lie. In this paper, we derive a connectionbetween initial dark matter density perturbations in the early universe andpresent-day virialized dark matter haloes by assuming simple spherical collapsecombined with conservation of mass and energy. We find that $z = 0$ haloconcentration, or alternatively the inner slope of the halo density profile$\alpha$, is monotonically and positively correlated with the collapse redshiftof the halo. This is qualitatively similar to the findings of some previousworks based on numerical simulations, with which we compare our results. Wethen describe how the halo mass and concentration (or inner slope $\alpha$) canbe used as two halo parameters in combination with two parameters of early-typegalaxies to create an improved abundance matching scheme.

A Two-Parameter Matching Scheme for Massive Galaxies and Dark Matter Haloes