SIMBAD references

2015ApJ...802...18M - Astrophys. J., 802, 18 (2015/March-3)

Weighing galaxy disks with the baryonic Tully-Fisher relation.

McGAUGH S.S. and SCHOMBERT J.M.

Abstract (from CDS):

We estimate the stellar masses of disk galaxies with two independent methods: a photometrically self-consistent color-mass-to-light ratio relation (CMLR) from population synthesis models, and the baryonic Tully-Fisher relation (BTFR) calibrated by gas-rich galaxies. These two methods give consistent results. The CMLR correctly converts distinct Tully-Fisher relations in different bands into the same BTFR. The BTFR is consistent with Mb ∝ Vf4over nearly six decades in mass, with no hint of a change in slope over that range. The intrinsic scatter in the BTFR is negligible, implying that the IMF of disk galaxies is effectively universal. The gas-rich BTFR suggests an absolute calibration of the stellar mass scale that yields nearly constant mass-to-light ratios in the near-infrared (NIR): 0.57 M/L in Ks and 0.45 M/L at 3.6 µm. There is only modest intrinsic scatter (∼0.12 dex) about these typical values. There is no discernible variation with color or other properties: the NIR luminosity is a good tracer of stellar mass.

Abstract Copyright:

Journal keyword(s): galaxies: evolution - galaxies: fundamental parameters - galaxies: kinematics and dynamics - galaxies: photometry - galaxies: stellar content

Simbad objects: 32

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2019.10.15-19:58:47

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