Results 11 to 20 of about 1,359 (236)
Rotation of Galaxy Dark Matter Halos [PDF]
Proceedings of the International Astronomical Union, 2006 AbstractThe degree to which outer dark matter halos of spiral galaxies rotate with the disk is sensitive to their accretion history and may be probed with associated satellite galaxies. We use the Steward Observatory Bok telescope to measure the sense of rotation of nearby isolated spirals and combine these data with those of their associated ...
S. Herbert-Fort +4 more
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DARK MATTER HALOS OF BARRED DISK GALAXIES [PDF]
The Astrophysical Journal, 2015 We use a large volume-limited sample of disk galaxies drawn from the Sloan Digital Sky Survey Data Release 7 to study the dependence of the bar fraction on the stellar-to-halo mass ratio, making use of a group catalog, we identify central and satellite galaxies in our sample.
Bernardo Cervantes Sodi +2 more
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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 ...
Qi Guo +3 more
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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.
Jes Ford +8 more
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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
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Constraining the substructure of dark matter haloes with galaxy–galaxy lensing [PDF]
Monthly Notices of the Royal Astronomical Society, 2013 19 pages, 14 figures, accepted by ...
Ran Li +4 more
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Red Galaxies Growing in Dark Matter Halos [PDF]
Proceedings of the International Astronomical Union, 2009 AbstractTo understand the slow growth of massive galaxies at z < 1, we have modeled how these galaxies populate dark matter halos. The models are constrained with the observed luminosity function and clustering of z < 1 red galaxies. In the most massive halos, much of the stellar mass resides within multiple satellite galaxies rather than a ...
M. J. I. Brown
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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
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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
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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
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