| | |
| | |
Stat |
Members: 3645 Articles: 2'506'133 Articles rated: 2609
26 April 2024 |
|
| | | |
|
Article overview
| |
|
The Velocity Dispersion -- Temperature Correlation from a Limited Cluster Sample | Christina M. Bird
; Richard F. Mushotzky
; Christopher A. Metzler
; | Date: |
4 May 1995 | Journal: | Astrophys.J. 453 (1995) 40 | Subject: | astro-ph | Affiliation: | U. Kansas), Richard F. Mushotzky (GSFC) and Christopher A. Metzler (U. Michigan | Abstract: | Most studies of correlations between X-ray and optical properties of galaxy clusters have used the largest samples of data available, regardless of the morphological types of clusters included. Given the increasing evidence that morphology is related to a cluster’s degree of dynamical evolution, we approach the study of X-ray and optical correlations differently. We evaluate the relationship between velocity dispersion and temperature for a limited set of galaxy clusters taken from Bird (1994), which all possess dominant central galaxies and which have been explicitly corrected for the presence of substructure. We find that $sigma _r propto T^{0.61 pm 0.13}$. We use a Monte Carlo computer routine to estimate the significance of this deviation from the $sigma _r propto T^{0.5}$ relationship predicted by the virial theorem. We find that the simulated correlation is steeper than the observed value only 4of the time, suggesting that the deviation is significant. The combination of protogalactic winds and dynamical friction reproduces nearly exactly the observed relationship between $sigma _r$ and $T$. | Source: | arXiv, astro-ph/9505020 | Services: | Forum | Review | PDF | Favorites |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
| News, job offers and information for researchers and scientists:
| |