Dark Matter in Elliptical Galaxies

@article{Buote2012DarkMI,
  title={Dark Matter in Elliptical Galaxies},
  author={David A. Buote and Philip J. Humphrey},
  journal={arXiv: Cosmology and Nongalactic Astrophysics},
  year={2012},
  volume={378},
  pages={235-277}
}
  • D. Buote, P. Humphrey
  • Published 31 March 2011
  • Physics
  • arXiv: Cosmology and Nongalactic Astrophysics
We review X-ray constraints on dark matter in giant elliptical galaxies \(({10}^{12}\,{M}_{\odot }\lesssim{M}_{vir} \lesssim1{0}^{13}\,{M}_{\odot })\)obtained using the current generation of X-ray satellites, beginning with an overview of the physics of the hot interstellar medium and mass modeling methodology. Dark matter is now firmly established in many galaxies, with inferred NFW concentration parameters somewhat larger than the mean theoretical relation. X-ray observations confirm that the… Expand
The Luminous X-Ray Halos of Two Compact Elliptical Galaxies
There is mounting evidence that compact elliptical galaxies (CEGs) are local analogs of the high-redshift "red nuggets" thought to represent progenitors of today's early-type galaxies (ETGs). WeExpand
The Extremely High Dark Matter Halo Concentration of the Relic Compact Elliptical Galaxy Mrk 1216
Compact elliptical galaxies (CEGs) are candidates for local analogs of the high-redshift "red nuggets" thought to represent the progenitors of today's early-type galaxies (ETGs). To address whetherExpand
THE ElIXr GALAXY SURVEY. II. BARYONS AND DARK MATTER IN AN ISOLATED ELLIPTICAL GALAXY
The Elliptical Isolated X-ray (ElIXr) Galaxy Survey is a volume-limited (<110 Mpc) study of optically selected, isolated, L * elliptical galaxies to provide an X-ray census of galaxy-scale (virialExpand
Constraining the Physical State of the Hot Gas Halos in NGC 4649 and NGC 5846
We present results of a joint \textit{Chandra}/\textit{XMM-Newton} analysis of the early-type galaxies NGC 4649 and NGC 5846 aimed at investigating differences between mass profiles derived fromExpand
X-ray shapes of elliptical galaxies and implications for self-interacting dark matter
Several proposed models for dark matter posit the existence of self-interaction processes that can impact the shape of dark matter halos, making them more spherical than the ellipsoidal halos ofExpand
The Entire Virial Radius of the Fossil Cluster RXJ1159+5531: II. Dark Matter and Baryon Fraction
In this second paper on the entire virial region of the relaxed fossil cluster RXJ1159+5531, we present a hydrostatic analysis of the hot intracluster medium (ICM). For a model consisting of ICM,Expand
Reconciling stellar dynamical and hydrostatic X-ray mass measurements of an elliptical galaxy with gas rotation, turbulence and magnetic fields
Recent hydrostatic X-ray studies of the hot interstellar medium (ISM) in early-type galaxies underestimate the gravitating mass as compared to stellar dynamics, implying modest, but significantExpand
TRACING THE GAS TO THE VIRIAL RADIUS (R 100) IN A FOSSIL GROUP
We present a Chandra, Suzaku, and ROSAT study of the hot intragroup medium (IGrM) of the relaxed fossil group/poor cluster RX J1159+5531. This group exhibits an advantageous combination of flatExpand
One Law To Rule Them All: The Radial Acceleration Relation of Galaxies
We study the link between baryons and dark matter in 240 galaxies with spatially resolved kinematic data. Our sample spans 9 dex in stellar mass and includes all morphological types. We consider (i)Expand
Effects of baryon mass loss on profiles of large galactic dark matter haloes
We perform controlled numerical experiments to asses the effect of baryon mass loss on the inner structure of large galactic dark matter (DM) haloes. This mass expulsion is intended to mimic both theExpand
...
1
2
3
...

References

SHOWING 1-10 OF 198 REFERENCES
THE BLACK HOLE MASS, STELLAR MASS-TO-LIGHT RATIO, AND DARK HALO IN M87
We model the dynamical structure of M87 (NGC4486) using high spatial resolution long-slit observations of stellar light in the central regions, two-dimensional stellar light kinematics out to half ofExpand
OBSERVATIONAL AND THEORETICAL CONSTRAINTS ON SINGULAR DARK MATTER HALOS
The distribution of dark matter around galactic or cluster halos has usually been assumed to be approximately isothermal with a non-zero core radius, which is expected to be of the order of the sizeExpand
X-ray group and cluster mass profiles in MOND: unexplained mass on the group scale
Although very successful in explaining the observed conspiracy between the baryonic distribution and the gravitational field in spiral galaxies without resorting to dark matter (DM), the modifiedExpand
Universal X-ray emissivity of the stellar population in early-type galaxies: unresolved X-ray sources in NGC 3379
We use deep Chandra observations to measure the emissivity of the unresolved X-ray emission in the elliptical galaxy NGC 3379. After elimination of bright, low-mass X-ray binaries with luminositiesExpand
Geometrical evidence for dark matter: X-ray constraints on the mass of the elliptical galaxy NGC 720
We describe (1) a new test for dark matter and alternate theories of gravitation based on the relative geometries of the X-ray and optical surface brightness distributions and an assumed form for theExpand
A chandra view of dark matter in early-type galaxies
We present a Chandra study of mass profiles in seven elliptical galaxies, of which three have galaxy-scale and four have group-scale halos, demarcated at 1013 M☉. These represent the best availableExpand
X-Ray Observations and the Structure of Elliptical Galaxies*
We compare optical and high-quality X-ray data for three bright elliptical galaxies in the Virgo Cluster, NGC 4472, 4649, and 4636. The distribution of total mass in NGC 4472 and 4649 determined fromExpand
Dark Matter Halos of Disk Galaxies: Constraints from the Tully-Fisher Relation
We investigate structural properties of dark matter halos of disk galaxies, using a well-defined sample of 81 disk-dominated galaxies from the SDSS redshift survey. We model the mass-velocity (TF)Expand
Mass estimates of X-ray clusters
We use cosmological gasdynamic simulations to investigate the accuracy of galaxy cluster mass estimates based on X-ray observations. The experiments follow the formation of clusters in differentExpand
Probing the Dark Matter and Gas Fraction in Relaxed Galaxy Groups with X-Ray Observations from Chandra and XMM-Newton
We present radial mass profiles within ~0.3rvir for 16 relaxed galaxy groups—poor clusters (kT range 1-3 keV) selected for optimal mass constraints from the Chandra and XMM-Newton data archives.Expand
...
1
2
3
4
5
...