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| Paper: |
Stellar Mass-to-Light Ratios and the Tully-Fisher Relation |
| Volume: |
230, Galaxy Disks and Disk Galaxies |
| Page: |
555 |
| Authors: |
de Jong, R. S.; Bell, E. F. |
| Abstract: |
We use spiral galaxy evolution models to argue that there are substantial variations in stellar mass-to-light ratio (M/L) within and among galaxies. Our models show a strong correlation between stellar M/L and galaxy color. We compare the colors and maximum-disk M/L values of a sample of galaxies to the model color-M/L relation, finding that a Salpeter IMF is too massive but that an IMF with fewer low mass stars fits the observations well. Applying our color-M/L relation to the Tully-Fisher (TF) relation, we find a stellar mass TF-relation that is independent of originating passband. Adding the HI gas mass, we find that the maximum slope of the baryonic TF-relation is 3.5. |
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