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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/1549

Title: The virial masses of clusters of galaxies and the effects of contamination
Authors: Fernley, J.A.
Bhavsar, S.P.
Keywords: ASTRONOMICAL MODELS,
GALACTIC CLUSTERS,
VIRIAL THEOREM,
BIG BANG COSMOLOGY,
ERROR ANALYSIS,
MANY BODY PROBLEM,
MASS DISTRIBUTION,ATIOS,
MASS TO LIGHT RATIOS
Issue Date: Oct-1984
Publisher: Blackwell Publishing for the Royal Astronomical Society
Citation: Monthly Notices of the Royal Astronomical Society, 1984, Vol.210, p883-890
Abstract: Model clusters selected from n-body simulations of clustering are used to evaluate the accuracy of virial methods in mass determination. Clusters having high virial masses due to contamination are identifiable by means of a chi-squared test which compares line-of-sight velocities with a normal distribution. For clusters with good chi-squared fits, the virial mass-to-actual mass ratio obtained indicates that a large degree of scatter inheres in the virial method. Atteention is given to mass-to-light ratio results for the Coma, A2151, and Hercules Supercluster formations. While the last of these is seriously contaminated, solar mass/solar luminosity ratios of 201 and 168 are derived for the other two. These ratios, however, are held to be uncertain by a factor of at least 3, and may therefore be due to 'massive halo' galaxies and intracluster gas.
Description: Sorry, the full text of this article is not available here. Please click on the alternative location to access it.
URI: http://hdl.handle.net/2289/1549
ISSN: 0035-8711
Alternative Location: http://adsabs.harvard.edu/cgi-bin/bib_query?1984MNRAS.210..883F
http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984MNRAS.210..883F&link_type=ARTICLE&db_key=AST
Copyright: (1984) Royal Astronomical Society
Appears in Collections:Research Papers (A&A)

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