Substructure in clusters as a cosmological test
dc.contributor.author | Crone, M. M. | en_US |
dc.contributor.author | Evrard, August E. | en_US |
dc.contributor.author | Richstone, Douglas O. | en_US |
dc.date.accessioned | 2008-08-14T19:09:47Z | |
dc.date.available | 2008-08-14T19:09:47Z | |
dc.date.issued | 1996-08-20 | en_US |
dc.identifier.citation | Crone, MM; Evrard, AE; Richstone, DO. (1996). Astrophysical Journal, 467:(2, Part1) 489-503. <http://hdl.handle.net/2027.42/60569> | en_US |
dc.identifier.issn | 0004-637X | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/60569 | |
dc.description.abstract | We use N-body simulations to test the dependence of cluster substructure on four cosmologies and three initial power spectra. Our purpose is to quantify the amount of substructure in each model and understand these results in terms of cluster merger histories as well as the behavior of the substructure statistics. In order to test the robustness of the statistics to observational effects, we perform our analysis not only using full three-dimensional information for each cluster, but also including projection and subsampling. We find that the statistic that best distinguishes the models is a very simple measure of gross deviations from symmetry in the projected mass distribution: the ''center-of-mass shift'' as a function of overdensity. The Dressler-Shectman and Lee-Fitchett statistics perform relatively poorly as cosmological indicators, even though they are quite sensitive to substructure. The substructure measured by these statistics relaxes in about a crossing time. | en_US |
dc.format.extent | 2347225 bytes | |
dc.format.extent | 18 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.publisher | Univ Chicago Press | en_US |
dc.subject | Cosmology : Theory | en_US |
dc.subject | Galaxies : Clusters : General | en_US |
dc.subject | Methods : Numerical | en_US |
dc.title | Substructure in clusters as a cosmological test | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Physics | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationother | UNIV MICHIGAN,DEPT PHYS,ANN ARBOR,MI 48109 | en_US |
dc.contributor.affiliationother | UNIV MICHIGAN,DEPT ASTRON,ANN ARBOR,MI 48109 | en_US |
dc.contributor.affiliationumcampus | Ann Arbor | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/60569/1/1996ApJ___467__489C.pdf | |
dc.identifier.doi | http://dx.doi.org/10.1086/177626 | en_US |
dc.owningcollname | Astrophysics (Physics, Department of) |
Files in this item
Remediation of Harmful Language
The University of Michigan Library aims to describe library materials in a way that respects the people and communities who create, use, and are represented in our collections. Report harmful or offensive language in catalog records, finding aids, or elsewhere in our collections anonymously through our metadata feedback form. More information at Remediation of Harmful Language.
Accessibility
If you are unable to use this file in its current format, please select the Contact Us link and we can modify it to make it more accessible to you.