difference between type IIL and Ibc

[brianpschmidt]

II-L is a SN like 1980K and 1979C which are hydrogen rich, and decline monotonically from maximum light without a plateau

Ibc are hydrogen deficient massive stellar explosions.

On 3/05/11 6:02 PM, wkerzendorf wrote:

Professor Brian P. Schmidt Telephone: 61 (0)2 6125 8042 ARC Laureate Fellow Fax: 61 (0)2 6125 0260 ANU Distinguished Professor The Australian National University Mt Stromlo Observatory The Research School of Astronomy and Astrophysics Weston Creek, ACT 2611 Australia

[wkerzendorf]

Thanks brian. but they are very similar otherwise? I mean why do the IIL's not have the hydrogen recombination phase like the IIPs? Not enough hydrogen?

[brianpschmidt]

They have some recombination phase, but the energy scales are such that it doesn't matter as much as other things.

On 3/05/11 11:04 PM, wkerzendorf wrote:

Thanks brian. but they are very similar otherwise? I mean why do the IIL's not have the hydrogen recombination phase like the IIPs? Not enough hydrogen?

Professor Brian P. Schmidt Telephone: 61 (0)2 6125 8042 ARC Laureate Fellow Fax: 61 (0)2 6125 0260 ANU Distinguished Professor The Australian National University Mt Stromlo Observatory The Research School of Astronomy and Astrophysics Weston Creek, ACT 2611 Australia