Slide 1 LOCATions of WR stars, SNE IB/c and GRBs Giorgos Leloudas Oskar Klein Centre, Stockholm University IAU 279, Nikko, 8 March 2012 Slide 2 Stripped SNE: the questions…

Slide 1 Evolved Massive Stars Slide 2 Wolf-Rayet Stars Classification WNL - weak H, strong He, NIII,IV WN2-9 - He, N III,IV,V earliest types have highest excitation WC4-9…

Stars with masses ⤠8M on the second ascent into the Red Giant Region Often AGBs are Long-Period Variables Can lose 50-70% of their mass during this period - major producer…

Stars with masses ⤠8M on the second ascent into the Red Giant Region Often AGBs are Long-Period Variables Can lose 50-70% of their mass during this period - major producer…

The Nearest Galaxies LMC SMC February 22, 1987 Image Courtesty of Mike Bessell SN 1987A (Type II) Image Courtesty of David Mailn, AAO The Next Type II Supernova? Image Courtesty…

Review Neutron Stars(NSs) and SNR (Crab Nebula…) and then on to BHs… SN-II produce a NS for massive stars in approx. range 8-15Msun; and a black hole for progenitors…

Progenitors: Mass loss determines SN Type. Type IIP (little mass lost), ....IIn, IIb ( < 0.5 M of H envelope), Ib (only He core), Ic (only O core) Ejecta structure: Shock…

PowerPoint Presentation LOCATions of WR stars, SNE IB/c and GRBs Giorgos Leloudas Oskar Klein Centre, Stockholm University IAU 279, Nikko, 8 March 2012 Stripped SNE: the…

Review Neutron Stars(NSs) and SNR (Crab Nebula…) and then on to BHs… SN-II produce a NS for massive stars in approx. range 8-15Msun; and a black hole for progenitors…