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| Paper: |
The Role of the TP-AGB Phase in Color – M/L Relations |
| Volume: |
445, Why Galaxies Care about AGB Stars II: Shining Examples and Common Inhabitants |
| Page: |
403 |
| Authors: |
Portinari, L.; Into, T. |
| Abstract: |
Color–M/L (mass-to-light) relations are a popular tool to derive stellar
mass in external galaxies. Stellar mass estimates often rely on
near-infrared (NIR) photometry, considered an optimal
tracer since it is little affected by dust and by
the “frosting” effect of recent star-formation episodes.
However, due to the important contribution of AGB stars to NIR luminosity,
theoretical estimates of the M/L ratio in NIR bands strongly depend
on the modelling of the AGB phase.
We use recent isochrones, including a detailed modelling of the TP-AGB
phase, to update theoretical colour–M/L relations in the optical and NIR,
and discuss the consequences for the estimated stellar masses in external
galaxies. |
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