Streaming motions and first-ranked cluster galaxies

Details Streaming motions and first-ranked cluster galaxies Streaming motions and first-ranked cluster galaxies

Mar 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988mnras.231p..15l&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 231, March 1, 1988, p. 15P-20P.

Astronomy and Astrophysics

Astronomy

11

Cosmic Rays, Galactic Clusters, Relic Radiation, Astronomical Photometry, Local Group (Astronomy), Red Shift

Scientific paper

Extensive photometry and redshift data for first-ranked cluster ellipticals are examined to test the suggestion (James et al., 1987) that there are large-scale streaming motions in the local universe. Two hypotheses are investigated: (1) that the Local Group's motion relative to the rich clusters is that determined from the cosmic microwave background (CMB) dipole; and (2) that the Local Group and the nearby rich clusters partake in a bulk streaming motion relative to the CMB. The present data seem to be consistent with rich clusters lying at rest relative to the CMB and not partaking in large-scale streaming.

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