SIMBAD references

2019MNRAS.482.5106L - Mon. Not. R. Astron. Soc., 482, 5106-5124 (2019/February-1)

A constant characteristic volume density of dark matter haloes from SPARC rotation curve fits.

LI P., LELLI F., McGAUGH S.S., STARKMAN N. and SCHOMBERT J.M.

Abstract (from CDS):

We study the scaling relations between dark matter (DM) haloes and galaxy discs using 175 galaxies from the SPARC data base. We explore two cosmologically motivated DM halo profiles: the Einasto profile from DM-only simulations and the DC14 profile from hydrodynamic simulations. We fit the observed rotation curves using a Markov Chain Monte Carlo method and break the disc-halo degeneracy using near-infrared photometry and ΛCDM-motivated priors. We find that the characteristic volume density ρs of DM haloes is nearly constant over ∼5 decades in galaxy luminosity. The scale radius rs and the characteristic surface density ρs * rs, instead, correlate with galaxy luminosity. These scaling relations provide an empirical benchmark to cosmological simulations of galaxy formation.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): galaxies: dwarf - galaxies: irregular - galaxies: kinematics and dynamics - galaxies: spiral - dark matter

Simbad objects: 176

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2019MNRAS.482.5106L and select 'bookmark this link' or equivalent in the popup menu


2020.07.05-09:32:54

© Université de Strasbourg/CNRS

    • Contact