The Disk Mass of Spiral Galaxies

TL;DR

This study estimates the disk masses of 18 spiral galaxies using rotation curve modeling and spectral energy distribution fitting, confirming the reliability of these methods and deriving precise stellar mass-to-light ratio relations.

Contribution

It introduces a dual-method approach for accurate disk mass estimation and provides new stellar mass-to-light ratio versus color relationships.

Findings

Good agreement between the two methods validates their reliability.

Derived precise stellar mass-to-light ratio versus color relationships.

Quantified the performance of mass estimation techniques.

Abstract

We derive the disk masses of 18 spiral galaxies of different luminosity and Hubble Type, both by mass modelling their rotation curves and by fitting their SED with spectro-photometric models. The good agreement of the estimates obtained from these two different methods allows us to quantify the reliability of their performance and to derive very accurate stellar mass-to-light ratio vs color (and stellar mass) relationships.