Is the Cluster Temperature Function a Reliable Test for $Ω_{0}$?

Details Is the Cluster Temperature Function a Reliable Test for $Ω_{0}$? Is the Cluster Temperature Function a Reliable Test for $Ω_{0}$?

1997-05-21

arxiv.org/abs/astro-ph/9705167v1

Astronomy and Astrophysics

Astrophysics

19 pages, Latex, 4 PostScript figures, to appear in ApJ, for comments contact Colafrancesco e-mail cola@roma2.infn.it

Scientific paper

10.1086/304749

We discuss the evolution of the cluster temperature function (TF) in different scenarios for structure formation. We use the commonly adopted procedure of fitting the model parameters to the local TF data, finding the best fit values and, most of all, the associated statistical errors. These errors yield an uncertainty in the prediction of the TF evolution. We conclude that, at the moment, observations of cluster temperatures at z<=0.5 could provide only a weak test for $\Omega_0$.

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