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Results of the Pisces-Perseus HI Redshift Survey

  • Riccardo Giovanelli (a1) and Martha P. Haynes (a1)

Abstract

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 6 h 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.

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References

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Results of the Pisces-Perseus HI Redshift Survey

  • Riccardo Giovanelli (a1) and Martha P. Haynes (a1)

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