The multiwavelength Tully-Fisher relation with spatially resolved H I kinematics

Anastasia A. Ponomareva, Marc A. W. Verheijen, Reynier F. Peletier, Albert Bosma

OnderzoeksoutputAcademicpeer review

26 Citaten (Scopus)
228 Downloads (Pure)


In this paper, we investigate the statistical properties of the Tully-Fisher relation (TFr) 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 μm) and of spatially resolved H I kinematics. We use these data together with three kinematic measures (WI_{50}, Vmax and Vflat) extracted from the global H I profiles or H I rotation curves, so as to construct 36 correlations allowing us to select the one with the least scatter. We introduce a tightness parameter σ⊥ 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 μm photometric band together with the Vflat parameter extracted from the H I rotation curve.
Originele taal-2English
Pagina's (van-tot)2387-2400
Aantal pagina's14
TijdschriftMonthly Notices of the Royal Astronomical Society
Nummer van het tijdschrift2
StatusPublished - 1-aug-2017

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