Results 1 to 10 of about 33,799 (176)
Galaxy-Induced Transformation of Dark Matter Halos [PDF]
Monthly Notices of the Royal Astronomical Society, 2009 We use N-body/gasdynamical LambdaCDM cosmological simulations to examine the effect of the assembly of a central galaxy on the shape and mass profile of its dark halo.
Abadi +63 more
core +3 more sources
The GD-1 Stellar Stream Perturber as a Core-collapsed Self-interacting Dark Matter Halo [PDF]
The Astrophysical Journal LettersThe GD-1 stellar stream exhibits spur and gap structures that may result from a close encounter with a dense substructure. When interpreted as a dark matter subhalo, the perturber is denser than predicted in the standard cold dark matter (CDM) model.
Xingyu Zhang +3 more
doaj +2 more sources
Galaxy Galaxy Lensing as a Probe of Galaxy Dark Matter Halos
, 2006 Gravitational lensing has now become a popular tool to measure the mass distribution of structures in the Universe on various scales. Here we focus on the study of galaxy's scale dark matter halos with galaxy-galaxy lensing techniques: observing the ...
Kneib, J-P., Limousin, M., Natarajan, P.
core +4 more sources
Dark matter halo properties from galaxy–galaxy lensing★ [PDF]
Monthly Notices of the Royal Astronomical Society, 2013 We present results for a galaxy-galaxy lensing study based on imaging data from the Canada-France-Hawaii Telescope Legacy Survey Wide. From a 12 million object multi-colour catalogue for 124 deg^2 of photometric data in the u*g'r'i'z' filters we compute photometric redshifts (with a scatter of _{ z/(1+z)} = 0.033 and an outlier rate of =2.0 per ...
Brimioulle, F. +4 more
openaire +4 more sources
The dark matter haloes of HI selected galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT We present the neutral hydrogen mass (MHI) function (HIMF) and velocity width (w50) function (HIWF) based on a sample of 7857 galaxies from the 40 per cent data release of the ALFALFA survey (α.40). The low mass (velocity width) end of the HIMF (HIWF) is dominated by the blue population of galaxies whereas the red population ...
Saili Dutta +2 more
openaire +2 more sources
The Galaxy Number Density Profile of Halos
The Astrophysical Journal, 2023 More precise measurements of galaxy clustering will be provided by the next generation of galaxy surveys, such as DESI, WALLABY, and the Square Kilometre Array.
Fei Qin +3 more
doaj +1 more source
MAGNIFICATION BY GALAXY GROUP DARK MATTER HALOS [PDF]
The Astrophysical Journal, 2012 We report on the detection of gravitational lensing magnification by a population of galaxy groups, at a significance level of 4.9 sigma. Using X-ray selected groups in the COSMOS 1.64 deg^2 field, and high-redshift Lyman break galaxies as sources, we measure a lensing-induced angular cross-correlation between the samples.
Ford, Jes +8 more
openaire +4 more sources
Tilted Dark Halos Are Common and Long-lived, and Can Warp Galactic Disks
The Astrophysical Journal Letters, 2023 In the Lambda cold dark matter paradigm, the dark halo governs the gravitational potential within which a galaxy can form and evolve. In this Letter we show that the present-day inner ( r < 50 kpc) dark halo can be significantly misaligned with the ...
Jiwon Jesse Han +3 more
doaj +1 more source
How do galaxies populate dark matter haloes? [PDF]
Monthly Notices of the Royal Astronomical Society, 2010 11 pages, 7 figures; revisions to both text and figures; matches version submitted to ...
Guo, Q. +3 more
openaire +3 more sources
Cuspy dark matter haloes and the Galaxy [PDF]
Monthly Notices of the Royal Astronomical Society, 2001 5 pages, 1 figures, MNRAS (submitted)
Binney, J, Evans, N
openaire +3 more sources