On DDO154 and Cold Dark Matter halo profiles

Abstract

We investigate the claim by Burkert and Silk (1997) that the observed rotation curve of the dwarf irregular galaxy DDO154 cannot be reconciled with the universal CDM halo profile of Navarro, Frenk & White (1996,1997) even when allowance is made for the effect of violent gas outflow events on the structure of the galaxy. By means of N-body simulations we show that under certain conditions it is possible to obtain a reasonable fit to the observed rotation curve without invoking Burkert & Silk's proposed spheroidal MACHO component. We are able to best reproduce the observed decline in the rotation curve by postulating additional hidden disc mass, in an amount that is compatible with disc stability requirements. In the process we improve upon the results of Navarro, Eke & Frenk (1996) on the formation of halo cores by mass loss by using actual haloes from Cold Dark Matter simulations instead of Hernquist (1990) distributions.

LaTeX (mn.sty), 8 pages, 6 figures included; updated to match final version to appear in MNRAS

Cited by in corpus (59)

• Cold collapse and the core catastrophe
• How supernova feedback turns dark matter cusps into cores
• The Core-Cusp Problem
• Dark Matter Scaling Relations
• Substructure and halo density profiles in a Warm Dark Matter Cosmology
• Mass loss from dwarf spheroidal galaxies: the origins of shallow dark matter cores and exponential surface brightness profiles
• The Metamorphosis of Tidally Stirred Dwarf Galaxies
• The Dark Matter Distribution in Disk Galaxies
• Dwarf Galaxy Rotation Curves and the Core Problem of Dark Matter Halos
• Small scale problems of the $\Lambda$CDM model: a short review
• Galaxy Formation: CDM, Feedback and the Hubble Sequence
• Formation of Disk Galaxies: Warm Dark Matter and the Angular Momentum problem
• Constraints on the Structure of Dark Matter Halos from the Rotation Curves of Low Surface Brightness Galaxies
• Dynamical friction and the evolution of satellites in virialized halos: the theory of linear response
• Maximum Feedback and Dark Matter Profiles of Dwarf Galaxies
• Non-Thermal Production of WIMPs and the Sub-Galactic Structure of the Universe
• A Quantitative Study of Interacting Dark Matter in Halos
• The Cusp/Core problem and the Secondary Infall Model
• Collisional versus Collisionless Dark Matter
• Baryon-induced dark matter cores in the EAGLE simulations
• The constant density region of the dark halos of spiral galaxies
• Constraints on Galaxy Density Profiles from Strong Gravitational Lensing: The Case of B 1933+503
• Non-Baryonic Dark Matter in Cosmology
• Velocity Dependence from Resonant Self-Interacting Dark Matter
• Density profiles of dark matter haloes on Galactic and Cluster scales
• The Baryons in the Milky Way Satellites
• Rotation curve fitting and its fatal attraction to cores in realistically simulated galaxy observations
• A model for the possible connection between tidal disruption event and quasi-periodic eruption in GSN 069
• Simulating galaxy clusters -- I. Thermal and chemical properties of the intra-cluster medium
• A unified solution to the small scale problems of the $\Lambda$CDM model
• The Cusp/Core problem: supernovae feedback versus the baryonic clumps and dynamical friction model
• On the surface density of dark matter haloes
• The Density Profile of Cluster-scale Dark Matter Halos
• Self-interacting dark matter without prejudice
• The radial acceleration relation in galaxy clusters
• A unified solution to the small scale problems of the $\Lambda$CDM model II: introducing parent-satellite interaction
• Statistical properties of the dark matter haloes of dwarf galaxies and correlations with the environment
• Revisiting the Scale Length-mu0 Plane and the Freeman Law in the Local Universe
• The flat density profiles of massive, and relaxed galaxy clusters
• Wave Dark Matter and Ultra Diffuse Galaxies
• The Failure of Self-Interacting Dark Matter to solve the Overabundance of Dark Satellites and the Soft Core Question
• Core formation from self-heating dark matter
• BDM Dark Matter: CDM with a core profile and a free streaming scale
• On the dark matter haloes inner structure and galaxy morphology
• The Fine Structure and Outskirts of DDO 154
• Dark Matter In Disk Galaxies II: Density Profiles as Constraints on Feedback Scenarios
• A galactic weigh-in: mass models of SINGS galaxies using chemospectrophotometric galactic evolution models
• SIMPly add a dark photon
• Gravitational Lensing by Galaxy Groups in the Hubble Deep Field
• An analytical approach to the dwarf galaxies cusp problem
• Two Channels of Metal-Rich Compact Stellar System Formation: Starbursts under High Ram Pressure versus Tidal Stripping
• Co-Interacting Dark Matter
• Inhomogenous Primordial Baryon Distributions on Sub-Galactic Scales: High-z Galaxy Formation with WDM
• Super-Resonant Dark Matter
• Estimation of the Mass of Dark Matter Using the Observed Mass Profiles of Late-Type Galaxies
• Cluster density slopes from Dark Matter-Baryons Energy Transfer
• On the absence of a universal surface density, and a maximum Newtonian acceleration in dark matter haloes: consequences for MOND
• A Mass Dependent Density Profile from Dwarfs to Clusters
• Formation of Disk Galaxies: On the Angular Momentum Problem, the Tully-Fisher Relation and Magnetohydrodynamics