Production of the $$p$$-process nuclei in the carbon-deflagration model for type Ia supernovae
日下部 元彦*; 岩本 信之; 野本 憲一*
Kusakabe, Motohiko*; Iwamoto, Nobuyuki; Nomoto, Kenichi*
We calculate nucleosynthesis of proton-rich isotopes in the carbon deflagration model for Type Ia supernovae (SNe Ia). When the deflagration wave passes through the outer layer of the CO white dwarf, $$p$$-nuclei are produced by photodisintegration reactions on s-nuclei in a region with the peak temperature ranging from 1.9 to 3.6$$times$$10$$^{9}$$ K. We find that about 50% of $$p$$-nuclides are co-produced when normalized to their solar abundances in all adopted cases of seed distribution. Mo and Ru, which are largely underproduced in Type II supernovae (SNe II), are produced at a level similar to other $$p$$-nuclides. The ratios between $$p$$-nuclei and iron in the ejecta are larger than the solar ratios by a factor of 1.2. We also compare the yields of oxygen, iron, and $$p$$-nuclides in SNe Ia and SNe II, and suggest that SNe Ia could make a larger contribution than SNe II to the solar system content of $$p$$-nuclei.
使用言語 : English
掲載資料名 : Astrophysical Journal
: 726
: 1
ページ数 : p.25_1 - 25_11
発行年月 : 2011/01
出版社名 : University of Chicago Press
特許データ :
論文URL :
キーワード : no keyword
使用施設 :
広報プレスリリース :
受委託・共同研究相手機関 :
登録番号 : AA20100035
抄録集掲載番号 : 39000962
論文投稿番号 : 9209
Accesses  (From Jun. 2, 2014)
- Accesses
分野:Astronomy & Astrophysics
Add This