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2009AJ....138..392S - Astron. J., 138, 392-401 (2009/August-0)

A first attempt to calibrate the baryonic Tully-Fisher relation with gas-dominated galaxies.

STARK D.V., McGAUGH S.S. and SWATERS R.A.

Abstract (from CDS):

We calibrate the baryonic Tully-Fisher (BTF) relation using a sample of gas-dominated galaxies. These determine the absolute scale of the baryonic mass-rotation speed relation independent of the choice of stellar mass estimator. We find a BTF slope of 3.94±0.07 (random) ±0.08 (systematic) and a zero point of 1.79±0.26 (random) ±0.25 (systematic). We apply this relation to estimate the stellar masses of star-dominated galaxies. This procedure reproduces the trend of mass-to-light ratio with color predicted by population synthesis models. The normalization is also correct, consistent with empirical estimates of the initial mass function used in such models.

Journal keyword(s): galaxies: dwarf - galaxies: kinematics and dynamics

Full paper

2022.07.01-19:45:32