Calibration of the Tully-Fisher relation in the field

Details Calibration of the Tully-Fisher relation in the field Calibration of the Tully-Fisher relation in the field

1997-01-23

arxiv.org/abs/astro-ph/9701184v1

Astronomy and Astrophysics

Astrophysics

20 pages, 24 figures. To appear in A&A Supplement Series

Scientific paper

A new technique for calibrating Tully-Fisher like relations by using field galaxies is proposed. Based on a null-correlation approach (NCA), the technique is insensitive to the presence of selection effects on apparent magnitude $m$ and on log line-width distance indicator $p$. This interesting property is used for discarding near by galaxies of the observed sample. It is shown that such a subsampling allows in effect to attenuate biases on calibration parameters created by the presence of radial peculiar velocities.

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