Concerning Colour: The Effect of Environment on Type Ia Supernova Colour in the Dark Energy Survey

Recent analyses have found intriguing correlations between the colour (c) of type Ia supernovae (SNe Ia) and the size of their 'mass-step', the relationship between SN Ia host galaxy stellar mass (M_\mathrm{stellar}) and SN Ia Hubble residual, and suggest that the cause of this relationship is dust. Using 675 photometrically-classified... Show more