BOND is a method to infer oxygen and nitrogen abundances in giant HII regions by comparison with a large grid of photoionization models using strong and semi-strong lines. The code is public and available at bond.ufsc.br.
I am working on dust attenuation in the stellar and nebular light in data cubes, i.e. all that is missing in the optical data.
I study the chemical enrichment and star formation histories of SDSS galaxies as derived by spectral synthesis code Starlight.