The velocity-distance relation for galaxies on a bubble

Details The velocity-distance relation for galaxies on a bubble The velocity-distance relation for galaxies on a bubble

Aug 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...395..347b&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 395, no. 2, Aug. 20, 1992, p. 347-359. Research supported by Smithsonian Sc

Astronomy and Astrophysics

Astronomy

22

Bubbles, Charge Coupled Devices, Galactic Clusters, Red Shift, Sky Surveys (Astronomy), Astronomical Photometry, H I Regions, Line Of Sight, Relic Radiation

Scientific paper

The characteristic diameter of the most prominent void in the redshift survey of de Lapparent et al. (1986) is measured. Distances and peculiar velocities to individual galaxies are derived, and it is shown that the void is approximately a 'Hubble Bubble' in which the near and far edges are separating with the general expansion of the universe. At the 3 sigma level, infall toward the Coma cluster is detected for a portion of the bubble wall. Limits on the net outflow from the void and infall into Coma are used to estimate Omega.

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