| Issue |
A&A
Volume 368, Number 3, March IV 2001
|
|
|---|---|---|
| Page(s) | 749 - 759 | |
| Section | Astrophysical processes | |
| DOI | https://doi.org/10.1051/0004-6361:20010080 | |
| Published online | 15 March 2001 | |
Details of the mass-temperature relation for clusters of galaxies
Max-Planck-Institut für extraterrestrische Physik, Giessenbachstraße, 85748 Garching, Germany
Corresponding author: A. Finoguenov, alexis@xray.mpe.mpg.de
Received:
9
October
2000
Accepted:
20
December
2000
We present results on the total mass and temperature determination using two
samples of clusters of galaxies. One sample is constructed with emphasis on
the completeness of the sample, while the advantage of the other is the use
of the temperature profiles, derived with ASCA. We obtain remarkably similar
fits to the 
relation for both samples, with the normalization and the
slope significantly different from both prediction of self-similar collapse
and hydrodynamical simulations. We discuss the origin of these discrepancies
and also combine the X-ray mass with velocity dispersion measurements to
provide a comparison with high-resolution dark matter simulations. Finally,
we discuss the importance of a cluster formation epoch in the observed
relation.
Key words: galaxies: clusters: general / cosmology: observations; dark matter; large-scale structure of Universe
© ESO, 2001
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