On the Correlation between Spin Parameter and Halo Mass

2008/01/29 by Alexander Knebe, Chris Power · 1 citation
Mathematics · Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics #Correlation #Dark matter #Dark matter halo #Galaxies: Formation, Evolution, Phenomena #Galaxy #Galaxy formation and evolution #Halo #Mathematics #Physics #Population #Redshift #Scientific Research and Discoveries #Spin (aerodynamics) #Virial mass #Virial theorem #astro-ph

paper · pdf · doi:10.1086/586702

7 pages, accepted for publication in ApJ

arxiv created 2008/01/29 · openalex publication_date 2008/04/30 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06

Abstract

We report on a correlation between virial mass M and spin parameter λ for dark matter halos forming at redshifts z ≳ 10. We find that the spin parameter decreases with increasing halo mass. Interestingly, our analysis indicates that halos forming at later times do not exhibit such a strong correlation, in agreement with the findings of previous studies. We briefly discuss the implications of this correlation for galaxy formation at high redshifts and the galaxy population we observe today.

Citations

• Modelling angular momentum history in dark matter haloes
• Core condensation in heavy halos: a two-stage theory for galaxy formation and clustering
• Origin of the Angular Momentum of Galaxies
• Do mergers spin-up dark matter haloes?
• Testing tidal-torque theory - II. Alignment of inertia and shear and the characteristics of protohaloes
• Testing tidal-torque theory - I. Spin amplitude and direction
• The spin and shape of dark matter haloes in the Millennium simulation of a Λ cold dark matter universe
• First‐Year Wilkinson Microwave Anisotropy Probe ( WMAP ) Observations: Determination of Cosmological Parameters
• Simulations of the formation, evolution and clustering of galaxies and quasars

Cited by

• AHF: AMIGA'S HALO FINDER