Dynamics of the microwave-decrement cluster Abell 665

Details Dynamics of the microwave-decrement cluster Abell 665 Dynamics of the microwave-decrement cluster Abell 665

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...376...46o&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 376, July 20, 1991, p. 46-50.

Astronomy and Astrophysics

Astrophysics

10

Galactic Clusters, Microwaves, Radial Velocity, Red Shift, Brightness Distribution, Intergalactic Media, Velocity Distribution, X Rays

Scientific paper

Velocity measurements have been conducted for 41 galaxies in the field of the rich cluster of galaxies A665. Of these, 33 are cluster members, and the distribution of velocities is well fitted by a Gaussian. The brightest cluster member has a velocity greater by 447 km/sec than the sample's robust median velocity; this large peculiar velocity may indicate velocity subclustering. The large velocity dispersion measured for A665 is not unusual among rich clusters. A significant fraction of rich clusters would display detectable decrements if contamination by radio sources could be removed.

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