I am trying to get the distance modulus from a light curve of a supernova and obviously the apparent magnitude changes with time. Not only that but there are so many filters with different mags.

So my question is which mag value do I use from which filter and at what time? I have attached an example light curve I plotted of 2013aa supernova

Thank you very much :)

Light Curve (Mag vs MJD) of SN2013aa

  • 1
    $\begingroup$ Hint: A distance modulus requires an apparent and absolute magnitude, see e.g. this and the classic Phillips 1993 paper on standardizable candles $\endgroup$ Commented Mar 16, 2023 at 16:28


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