Search for cooling flows in southern X-ray clusters of galaxies

Details Search for cooling flows in southern X-ray clusters of galaxies Search for cooling flows in southern X-ray clusters of galaxies

Aug 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...234...60n&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 234, no. 1-2, Aug. 1990, p. 60-66. Research supported by MPI and CNR.

Astronomy and Astrophysics

Astronomy

5

Galactic Clusters, X Ray Sources, Astronomical Spectroscopy, Elliptical Galaxies, Emission Spectra, Red Shift, Sky Surveys (Astronomy), Southern Sky

Scientific paper

EFOSC spectroscopic observations of 20 galaxies belonging to 10 distant X-ray southern clusters, selected from the HEAO1-A1 catalogue, are presented. The redshifts derived for the observed clusters (z = 0.15) are systematically lower than expected from their Duus and Newell distance class, but in good agreement with the distance class reported in the southern clusters catalog by Abell, Corwin, and Olowin. In the central cluster galaxies, no emission lines typical of cooling flow clusters, with negative results have been found. The '4000 break' amplitudes also have values typical for normal elliptical galaxies. These findings suggest that the observed clusters are unlikely to have strong ongoing cooling flows.

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