X-ray and optical observations of the Shapley supercluster in Hydra-Centaurus

Details X-ray and optical observations of the Shapley supercluster in Hydra-Centaurus X-ray and optical observations of the Shapley supercluster in Hydra-Centaurus

Jan 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mnras.248..101r&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 248, Jan. 1, 1991, p. 101-111. Research supported by Ro

Astronomy and Astrophysics

Astronomy

67

Galactic Clusters, X Ray Astronomy, Centaurus Constellation, Galactic Mass, Luminosity, Red Shift

Scientific paper

X-ray and optical observations of the Shapley Supercluster at redshifts between 0.037 and 0.053 in the region of Hya and Cen are presented. The X-ray data show that many of the clusters are multiple and confirm the exceptionally high density of rich clusters. Six of the 46 X-ray brightest clusters at high Galactic latitude belong to this supercluster. The Local Supercluster is less luminous in X-rays than the least-luminous cluster found here, and only the Cen cluster in the Great Attractor is (just) more luminous than the weakest cluster detected in the Shapley Supercluster. The optical and X-ray luminosity functions suggest that there are large deviations from the Hubble flow in the region, and that clusters are merging at a high rate.

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