Spatial distribution of spiral galaxies in the Virgo Cluster from the Tully-Fisher relation

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Spatial Distribution, Spiral Galaxies, Star Distribution, Astronomical Photometry, Galactic Clusters, Space Observations (From Earth)

Scientific paper

A Tully-Fisher analysis is carried out for a complete sample of spiral galaxies in the Virgo Cluster with the use of newly obtained accurate photometry data. We present evidence that spiral galaxies in the Virgo Cluster are distributed in an elongated region, like a filament, which extends from 13 to 30 Mpc almost along the line of sight (offset 6 deg toward SSW) with the maximum of the density distribution at around 15 Mpc. This explains the discrepancy in the distance modulus and the dispersion among various authors who carried out Tully-Fisher analyses for the Virgo Cluster.

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