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Results of the Pisces-Perseus HI Redshift Survey

Published online by Cambridge University Press:  03 August 2017

Riccardo Giovanelli  and
Martha P. Haynes
Riccardo Giovanelli
Affiliation:
NAIC3, Arecibo Observatory and Astronomy Dept., Cornell University, USA
Martha P. Haynes
Affiliation:
NAIC3, Arecibo Observatory and Astronomy Dept., Cornell University, USA

Abstract

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We report on the current status of the HI redshift survey in the Pisces-Perseus supercluster and present results based on a sample of approximately 4700 redshifts known in the 6h by 45° region of the sky dominated by the supercluster. In particular we derive density contrasts between voids and high density regions and discuss the existence of a luminosity bias between galaxies that reside in regions of different local density. Such a bias is not the consequence of the well-known pattern of morphological type segregation, but results from a difference in the shape of the luminosity function of galaxies in high and low density regions. Bright galaxies tend to be relatively less abundant, and faint ones relatively more so, in low density environments.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 130: Large Scale Structures of the Universe , 1988 , pp. 113 - 120
Copyright
Copyright © Reidel 1988 

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