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Title:
Spectroscopy and photometry of elliptical galaxies. V - Galaxy streaming toward the new supergalactic center
Authors:
Lynden-Bell, D.; Faber, S. M.; Burstein, David; Davies, Roger L.; Dressler, Alan; Terlevich, R. J.; Wegner, Gary
Affiliation:
AA(Cambridge University, Observatoires, England), AB(Lick Observatory, Santa Cruz, CA), AC(Arizona State University, Tempe, AZ), AD(Kitt Peak National Observatory, Tucson, AZ), AE(Mount Wilson and Las Campanas Observatoires, Pasadena, CA)
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 326, March 1, 1988, p. 19-49. Research supported by NATO, Arizona State University, University of California, and Royal Greenwich Observatory. (ApJ Homepage)
Publication Date:
03/1988
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Astronomical Photometry, Astronomical Spectroscopy, Elliptical Galaxies, Galactic Clusters, Galactic Nuclei, Relic Radiation, Computational Astrophysics, Cosmic Rays, Dark Matter, Local Group (Astronomy), Mass Distribution, Red Shift, Velocity Distribution, Virgo Galactic Cluster
DOI:
10.1086/166066
Bibliographic Code:
1988ApJ...326...19L

Abstract

The authors analyze here the dynamics of 400 elliptical galaxies of their all-sky survey. The motions of the elliptical galaxies, over and above Hubble expansion in the Cosmic Mircrowave Background frame, are best fitted by a flow toward a great attractor centered on l = 307, b = 9 at a distance of Rm = 4350±350 km s-1 in the Hubble flow. The excess mass must be ≡5.4×1016M_sun;, comparable to the largest superclusters in order to generate the streaming motion at the Sun of 570±60 km s-1. A picture of the hemisphere of sky centered on this direction shows a remarkable concentration of galaxies that broadens the supergalactic band near there. Estimates show that this concentration in Centaurus is some 20 times more populous than the Virgo cluster.

Associated Articles

Part  1     Part  4     Part  2     Part  3     Part  5     Part  6     Part  7    


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