The dark matter distribution in disc galaxies

By A. Borriello, P. Salucci. 2000

297 citations recorded by the source corpus.

We use high-quality optical rotation curves of nine low-luminosity disc galaxies to obtain the velocity profiles of the surrounding dark matter haloes. We find that they increase linearly with radius at least out to the edge of the stellar disc, implying that, over the entire stellar region, the density of the dark halo is about constant. The properties of the mass structure of these haloes are similar to those found for a number of dwarf and low surface brightness galaxies, but provide a more substantial evidence of the discrepancy between the halo mass distribution predicted in the cold dark matter scenario and those actually detected around galaxies. We find that the density law proposed by Burkert reproduces the halo rotation curves, with halo central densities (ρ0∼1–4×10−24 g cm−3) and core radii (r0∼5–15 kpc) scaling as ρ0∝r0−2/3.

Subfields: Astronomy and Astrophysics, Instrumentation, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/61912d515f570d164a6db9562eec22c566907d42

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

In Instrumentation

In Statistical and Nonlinear Physics

Citations in the corpus

MORPHOLOGICAL QUENCHING OF STAR FORMATION: MAKING EARLY-TYPE GALAXIES RED (2009, background): “The fact that dark matter halos have a flat core is widely observed in the Local Universe (Borriello & Salucci 2001; Salucci 2001; de Block et al. 2003; Oh et al. 2008; Trachternach et al. 2008) and high redshift observations (Förster Schreiber et al. 2006) suggest that the mass in the inner region”
MERGERS AND BULGE FORMATION IN ΛCDM: WHICH MERGERS MATTER? (2009, background): “…results: these include halo mass estimates in low-mass systems from rotation curve fitting (see e.g. Persic & Salucci 1988; Persic et al. 1996; Borriello & Salucci 2001; Avila-Reese et al. 2008), or in high-mass systems from X-ray gas or group kinematics (Eke et al. 2004; Yang et al. 2005;…”
The Core-Cusp Problem (2009, background): “Borriello and Salucci [76] analysed Hα rotation curves of a number of dark matter dominated galaxies, and also found strong evidence for core-like dark matter distributions.”
MERGERS IN ΛCDM: UNCERTAINTIES IN THEORETICAL PREDICTIONS AND INTERPRETATIONS OF THE MERGER RATE (2010, background): “1988, 1990; Persic et al. 1996b,a; Bell & de Jong 2000, 2001; Borriello & Salucci 2001; Borriello et al. 2003; Shankar et al. 2006; Avila-Reese et al. 2008) and estimates of the halo masses of massive groups and clusters from e.g. X-ray gas and group kinematics, as a function of central galaxy mass…”
High-resolution rotation curves of low surface brightness galaxies (2002, background): “…seem that current models of structure formation and galaxy evolution need to take into account the fact that most late-type galaxies have a constant density dark matter core rather than a cusp (see also results by Borriello & Salucci 2001; Salucci & Burkert 2000; Salucci 2001 for HSB galaxies).”
High-Resolution Measurements of the Halos of Four Dark Matter-Dominated Galaxies: Deviations from a Universal Density Profile (2004, background): “…Electronic address: aleroy@astro.berkeley.edu Electronic address: blitz@astro.berkeley.edu Electronic address: egates@ucolick.org 2001a; Borriello & Salucci 2001; de Blok, McGaugh, & Rubin 2001b; de Blok & Bosma 2002; Salucci, Walter, & Borriello 2003;Weldrake, de Blok, &Walter 2003;…”