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

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

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Abstract

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.
Original languageEnglish
Pages (from-to)2387-2400
Number of pages14
JournalMonthly Notices of the Royal Astronomical Society
Volume469
Issue number2
DOIs
Publication statusPublished - 1-Aug-2017

Keywords

  • galaxies: fundamental parameters
  • galaxies: kinematics and dynamics
  • galaxies: photometry
  • SURFACE PHOTOMETRY
  • DISTANCE SCALE
  • URSA-MAJOR CLUSTER
  • MORPHOLOGICAL TYPE DEPENDENCE
  • STELLAR MASS DISTRIBUTIONS
  • DECLINING ROTATION CURVES
  • VELOCITY-WIDTH RELATION
  • SPIRAL GALAXIES
  • DWARF GALAXIES
  • DARK-MATTER

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