Ideal bandpasses for type Ia supernova cosmology

  title={Ideal bandpasses for type Ia supernova cosmology},
  author={Tamara M. Davis and B P Schmidt and Alex G. Kim Australian National University and Lawrence Berkeley National Laboratory},
  journal={Lawrence Berkeley National Laboratory},
To use type Ia supernovae as standard candles for cosmologywe need accurate broadband magnitudes. In practice the observed magnitudemay differ from the ideal magnitude-redshift relationship either throughintrinsic inhomogeneities in the type Ia supernova population or throughobservational error. Here we investigate how we can choose filterbandpasses to reduce the error caused by both these effects. We find thatbandpasses with large integral fluxes and sloping wings are best able tominimise… Expand
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