Astronomy & Astrophysics Seminar: Master's Talk: II-P or not II-P: a comprehensive study of Type-II Supernovae
Tamar Faran, TAU
What are supernovae (SNe) II-L? This class has been ill defined for decades, yet it may play an important role in understanding what happens to stars in the ~15-25 M_sun range. We analyze the multi-band light curves and extensive spectroscopic coverage of a sample of 35 Type-II SNe and find that the properties of the 11 SNe II-L in our sample can be easily understood if coming from this mass range. We find that their spectra are hydrogen deficient and helium abundant, with line velocities consistent with a thin hydrogen shell. That same composition is responsible for the rapid decline of the light curve.
Seminar Organiser: Prof. Rennan Barkana