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The Center for Astrophysics Redshift Survey

Published online by Cambridge University Press:  03 August 2017

J. Huchra ,
M. Geller ,
V. de Lapparent  and
R. Burg
J. Huchra
Affiliation:
Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 USA
M. Geller
Affiliation:
Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 USA
V. de Lapparent
Affiliation:
Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 USA
R. Burg
Affiliation:
Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 USA

Abstract

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The first CfA Survey is now over 90% spectroscopically complete. Over 60% of all galaxies exhibit detectable emission lines. We have also completed five slices of the Center for Astrophysics (CfA) redshift survey extension. The geometry of the structures in the first slice persists; galaxies are distributed on thin surfaces of “bubble-like” structures. Empty regions or “voids” are common, come in a variety of sizes ranging up to 5,000 km s−1, and are underdense by factors of up to 5 w.r.t. the mean. These voids fill ∼ 80% of the volume of the local universe. Clusters of galaxies lie at the interstices of bubbles; some of the poor Abell clusters do not exist as “fingers” in redshift space. The surfaces are very thin with an average FWHM less than 500 km s−1 in redshift space (σ ∼ 200 to 250 km s−1).

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 130: Large Scale Structures of the Universe , 1988 , pp. 105 - 112
Copyright
Copyright © Reidel 1988 

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