The distance to the Coma cluster using the B-band Tully-Fisher relation

Astronomy and Astrophysics – Astronomy

Scientific paper

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Astronomical Photometry, Distance, Galactic Clusters, Galactic Radiation, Radio Astronomy, Radio Sources (Astronomy), Calibrating, Correction, Cosmology, H Lines, Spectral Line Width

Scientific paper

The present estimate of the distance to the Coma cluster on the basis of the B-band Tully-Fisher (T-F) relation has conducted photographic surface photometry on all galaxies for which H I line width data in a circle of 4-deg radius centered on the Coma cluster. A detailed estimate is made of the cluster population incompleteness bias for the distance estimation. While the correction for sample incompleteness, in conjunction with the T-F relation, increases the distance modulus, the result cannot be as large as the value indicated by Kraan-Kortweg et al. (1988).

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