On distinguishing age from metallicity with photometric data
  In the study of galaxy integrated light, if photometric indicators could
extract age and metallicity information of high enough quality, photometry
might be vastly more efficient than spectroscopy for the same astrophysical
goals. Toward this end, we search three photometric systems: David Dunlap
Observatory (DDO), Beijing-Arizona-Taiwan-Connecticut (BATC), and Stromgren
systems for their ability to disentangle age and abundance effects. Only the
Stromgren [c_1] vs. [m_1] plot shows moderate age-metallicity disentanglement.
We also add to the discussion of optical to near-infrared Johnson-Cousins broad
band colours, finding a great decrease in age sensitivity when updated
isochrones are used.
