http://arxiv.org/abs/1704.08788
In this paper we investigate the statistical properties of the Tully-Fisher relation for a sample of 32 galaxies with measured distances from the Cepheid period-luminosity relation and/or TRGB stars.
We take advantage of panchromatic photometry in 12 bands (from FUV to 4.5 {\mu}m) and of spatially resolved HI kinematics. We use these data together with three kinematic measures ($W^{i}{50}$, $V{max}$ and $V_{flat}$) extracted from the global HI profiles or HI rotation curves, so as to construct 36 correlations allowing us to select the one with the least scatter. We introduce a tightness parameter $\sigma_{\perp}$ of the TFr, in order to obtain a slope-independent measure of the goodness of fit. We find that the tightest correlation occurs when we select the 3.6 {\mu}m photometric band together with the $V_{flat}$ parameter extracted from the HI rotation curve.
A. Ponomareva, M. Verheijen, R. Peletier, et. al.
Mon, 1 May 17
9/46
Comments: 16 pages, 16 figures, accepted for publication in MNRAS
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