Here's an older paper -- there are probably newer ones with more spectra: https://www.aanda.org/articles/aa/full_html/2014/12/aa24634-14/aa24634-14.html
Here's an older paper -- there are probably newer ones with more spectra:
https://www.aanda.org/articles/aa/full_html/2014/12/aa24634-14/aa24634-14.html