Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mnras.252..414e&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 252, Oct. 1, 1991, p. 414-441. Research supported by Ro
Astronomy and Astrophysics
Astrophysics
334
Exosat Satellite, Galactic Clusters, X Ray Astronomy, Cooling Flows (Astrophysics), Spaceborne Astronomy, X Ray Spectra
Scientific paper
An analysis of the data for all the clusters observed by Exosat is presented. The spectral and imaging results are given and the relationships between the X-ray properties of clusters are investigated. A significant scatter in the correlation between the X-ray luminosity and temperature, which can be interpreted as variations in the ratio of the gas mass to total mass among the clusters, is found. The measured iron abundances are consistent with a 'canonical' average value of 0.3 solar. The large majority of clusters are found to be cooling in their cores, indicating that cooling flows are a common phenomenon. The results obtained for clusters are compared with the optical, infrared, and radio properties of the clusters taken from the literature. A number of strong correlations are found. The ratios of the intracluster medium temperature and the cluster velocity dispersion are found to have a mean of less than one, in agreement with values obtained from the surface brightness distribution of the X-ray emission, thus resolving the 'Beta problem'.
Edge Alastair C.
Stewart Gordon C.
No associations
LandOfFree
EXOSAT observations of clusters of galaxies. I - The X-ray data. II - X-ray to optical correlations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with EXOSAT observations of clusters of galaxies. I - The X-ray data. II - X-ray to optical correlations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and EXOSAT observations of clusters of galaxies. I - The X-ray data. II - X-ray to optical correlations will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1876602