Images

Papers

• Bressan, A., Della Valle, M., \& Marziani, P. 2002, astro-ph/0201085
  On Core Collapse Supernovae in Normal and in Seyfert Galaxies
  ---seems that Ib/c's are much more common in Seyfert galaxies than in normal galaxies.

• Napiwotzki, R. et al. (including Bruno) 2002, astro-ph/0203147
  Search for progenitors of supnernovae type Ia with SPY
  ---a search for close binary white dwarf systems (double degenerates or DDs) as progenitors for Type I SNe. It is a tremendous boon for white science as well. The survey is expected to find about 200 DDs: so far they have 62. Only a few percent of DDs are needed to supply Type Ia progenitors. But they havn't found any progenitor systems yet: i.e., systems with total mass exceeding the Chandrasekhar mass limit. Of course maybe the mass doesn't have to exceed the Chandrasekhar mass limit, but computations shows it probably does have too.