Journal article

A new I-band tully-fisher relation for the fornax cluster: implication for the fornax distance and local supercluster velocity field

M Bureau, JR Mould, L Staveley-Smith

The Astrophysical Journal | Published : 1996

Abstract

The Fornax Cluster represents an important step in the extragalactic distance scale. Here we present a new I-band luminosity-H I velocity width (I-band Tully-Fisher) study of the cluster using an enlarged sampled of spiral galaxies in Fornax. I-band CCD photometry and 21 cm parameters are measured for 23 members of Fornax and compared with data for the Virgo Cluster. We obtain an accurate distance modulus of Fornax relative to Virgo of -0.06 ± 0.15 mag. The low scatter of Fornax galaxies around the Tully-Fisher relation will make the cluster an ideal calibrator once a direct measurement of its distance is obtained. Furthermore, the H I content of the galaxies does not seem affected by the cl..

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University of Melbourne Researchers

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