Evidence for Type Ia Supernova Diversity from Ultraviolet Observations with the Hubble Space Telescope

Xiaofeng Wang, Lifan Wang, Alexei V. Filippenko +93

We present ultraviolet (UV) spectroscopy and photometry of four Type Ia supernovae (SNe 2004dt, 2004ef, 2005M, and 2005cf) obtained with the UV prism of the Advanced Camera for Sur…