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Table 1.

i-band Tully-Fisher relation.

Authors α ± σα β ± σβ Fitting method Number of galaxies
This work −7.99 ± 0.15 −20.63 ± 0.19 OSL bisector 123
Giovanelli et al. (1997a); Giovanelli et al. (1997b) −7.67 ± 0.33 −20.83 ± 0.32 bi-variate 782
Masters et al. (2006) −7.85 ± 0.10 −20.68 ± 0.05 bi-variate 807
Masters et al. (2006) −8.14 ± 0.28 −20.73 ± 0.05 OSL bisector 807
Masters et al. (2006)/HRS subsamples −7.91 ± 0.18 −20.71 ± 0.08 OSL bisector 123

Notes. Coefficients obtained for the i-band TF relation Mi = (β ± σβ)+(α ± σα) (log2Vmax − 2.5) in the literature and this work. The last line has been computed by averaging 100 subsamples randomly extracted from Masters et al. (2006) and matching exactly our luminosity galaxy distribution.

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