Near-IR Type Ia SN distances: host galaxy extinction and mass-step corrections revisited

J. Johansson, S. B. Cenko, O. D. Fox +17

We present optical and near-infrared (NIR, $YJH$-band) observations of 42 Type Ia supernovae (SNe Ia) discovered by the untargeted intermediate Palomar Transient Factory (iPTF) sur…