Dark matter in early-type galaxies: dynamical modelling of IC1459, IC3370, NGC3379 and NGC4105
arXiv:astro-ph/0508263 · doi:10.1111/j.1365-2966.2005.09479.x
Abstract
We analyse long-slit spectra of four early-type galaxies which extend from ~1 to ~3 effective radii: IC1459, IC3370, NGC3379 and NGC4105. We have extracted the full line-of-sight velocity distribution (in the case of NGC3379 we also used data from the literature) which we model using the two-integral approach. Using two-integral modelling we find no strong evidence for dark haloes, but the fits suggest that three-integral modelling is necessary. We also find that the inferred constant mass-to-light ratio in all four cases is typical for early-type galaxies. Finally, we also discuss the constraints on the mass-to-light ratio which can be obtained using X-ray haloes in the case of IC1459, NGC3379 and NGC4105 and compare the estimated values with the predictions from the dynamical modelling.
42 pages, 18 figures, accepted for publication in MNRAS
References in corpus (29)
- Dynamical Modeling of Velocity Profiles: The Dark Halo Around the Elliptical Galaxy NGC2434
- Hot Gas In and Around Elliptical Galaxies
- Axisymmetric, 3-Integral Models of Galaxies: A Massive Black Hole in NGC3379
- The counterrotating core and the black hole mass of IC1459
- Dynamics of the Globular Cluster System Associated with M49 (NGC4472): Cluster Orbital Properties and the Distribution of Dark Matter
- X-ray Emission from the Hot ISM and SW Radio Lobe of the Nearby Radio Galaxy Centaurus A
- The Planetary Nebula System and Dynamics in the Outer Halo of NGC 5128
- The line of sight velocity distributions of simulated merger remnants
- Detection, photometry and slitless radial velocities of 535 planetary nebulae in the flattened elliptical galaxy NGC 4697
- The orbital structure and potential of NGC 1399
- The Globular Cluster System of NGC 1399. II. Kinematics of a Large Sample of Globular Clusters
- Prevalence and Properties of Dark Matter in Elliptical Galaxies
- Embedded disks in Fornax dwarf ellipticals
- ROSAT Temperatures and Abundances for a Complete Sample of Elliptical Galaxies
- Dark matter in elliptical galaxies
- The black hole in IC 1459 from HST observations of the ionized gas disk
- The X-ray-faint Emission of the Supermassive Nuclear Black Hole of IC1459
- The Stellar Kinematic Fields of NGC 3379
- X-Ray Emission from Early-Type Galaxies: A Complete Sample Observed by ROSAT
- The Distribution of Stellar Orbits in the Giant Elliptical Galaxy NGC 2320
- Resolving the Stellar Population of the Standard Elliptical Galaxy NGC3379
- The Post-Merger Elliptical NGC 1700: Stellar Kinematic Fields to Four Effective Radii
- The Shape and Orientation of NGC 3379: Implications for Nuclear Decoupling
- The Three-Dimensional Mass Distribution in NGC 1700
- On the use of X-rays to determine dynamical properties of elliptical galaxies
- A 15-Kiloparsec X-Ray Disk in the Elliptical Galaxy NGC 1700
- Emission Mechanisms in X-Ray Faint Galaxies
- Flattened Galactic Haloes and Baryonic Dark Matter
- Star formation history of early-type galaxies in low density environments
Cited by in corpus (25)
- On the Correlations between Galaxy Properties and Supermassive Black Hole Mass
- Kinematic properties of early-type galaxy haloes using planetary nebulae
- The PN.S Elliptical Galaxy Survey: the dark matter in NGC 4494
- Far Infrared Spitzer Observations of Elliptical Galaxies: Evidence for Extended Diffuse Dust
- The Black Hole in NGC 3379: A Comparison of Gas and Stellar Dynamical Mass Measurements with HST and Integral-Field Data
- Gemini/GMOS Spectra of Globular Clusters in the Leo Group Elliptical NGC 3379
- Dissipationless collapse, weak homology and central cores of elliptical galaxies
- Star-Formation Bimodality in Early-Type Galaxies
- Line-of-sight velocity dispersions and a mass distribution model of the Sa galaxy NGC 4594
- Kinematic properties of the field elliptical NGC 7507
- Constraints on the dynamical evolution of the galaxy group M81
- Reconciling optical and X-ray mass estimates: the case of the elliptical galaxy NGC3379
- Discovery of Hot Gas in Outflow in NGC3379
- Cosmic evolution of metal densities: the enrichment of the Inter-Galactic Medium
- Dark Matter Deprivation in Field Elliptical Galaxy NGC 7507
- MOND vs. Newtonian dynamics in early-type galaxies. The case of NGC 4649 (M60)
- Small Scale Systems of Galaxies. III. X-ray detected E+S galaxy pairs in low density environments
- Uncovering Planetary Nebulae in Early Type Galaxies using the Rutgers Fabry-Perot
- Unravelling the Origin of the Counter-Rotating Core in IC 1459 with KMOS and MUSE
- Deciphering the Origin of Ionized Gas in IC 1459 with VLT/MUSE
- Two-component, ideal, self-gravitating fluids: the fractional virial potential energy
- Elliptical galaxies: rotationally distorted, after all
- The physical properties and the evolution of the interacting system AM1204-292
- Dark-Matter Content of Early-Type Galaxies with Planetary Nebulae
- The total mass of the early-type galaxy NGC 4649 (M60)