At the February 2012 ASSA General meeting, Kevin Davey spoke about Type Ia supernovae as standard candles. The recent Type Ia supernova in the Pinwheel Galaxy was mentioned during Q&A.
The figure below shows a light curve of the supernova (whose designation is now PTF11kly):
The plot shows observations from the AAVSO International Database in multiple wavelengths (visual, various photometric and infrared bands) from August 24 2011 through to Feburary 2 2012.
This shows the characteristic light curve of a Type Ia supernova.
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