SIMBAD references

2019MNRAS.483.1496S - Mon. Not. R. Astron. Soc., 483, 1496-1512 (2019/February-3)

The mass-to-light ratios and the star formation histories of disc galaxies.


Abstract (from CDS):

We combine new data from the main sequence (M* versus SFR) of star-forming galaxies and galaxy colours (from GALEX to Spitzer) with a flexible stellar population scheme to deduce the mass-to-light ratio (Υ*) of star-forming galaxies from the SPARC and S4G samples. We find that the main sequence for galaxies, particularly the low-mass end, combined with the locus of galaxy colours, constrains the possible star formation histories of disc and dwarf galaxies to a similar shape found by Speagle et al. Combining the deduced star formation history with stellar population models in the literature produces reliable Υ* values as a function of galaxy colour with an uncertainty of only 0.05 dex. We provide prescriptions to deduce Υ* for optical and near-IR bandpasses, with near-IR bandpasses having the least uncertainty (Υ* from 0.40 to 0.55). We also provide the community with a webtool, with flexible stellar population parameters, to generate their own Υ* values over the wavelength range for most galaxy surveys.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): techniques: photometric - galaxies: star formation - galaxies: stellar content

Simbad objects: 2

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