On the root cause of the host `mass-step' in the Hubble residuals of type Ia supernovae

Chul Chung, Suk-Jin Yoon, Seunghyun Park +4

It is well established that the Hubble residuals of type Ia supernovae (SNe Ia) show the luminosity step with respect to their host galaxy stellar masses. This `mass-step' is taken…