Contributions of type II and Ib/c supernovae to Galactic chemical evolution
Contributions of type II and Ib/c supernovae to Galactic chemical evolution作者机构:Department of Physics Panjab University
出 版 物:《Research in Astronomy and Astrophysics》 (天文和天体物理学研究(英文版))
年 卷 期:2014年第14卷第6期
页 面:693-704页
核心收录:
学科分类:0709[理学-地质学] 07[理学] 0708[理学-地球物理学] 070401[理学-天体物理] 0825[工学-航空宇航科学与技术] 0704[理学-天文学]
基 金:supported by the PLANEX (ISRO) grant
主 题:Sun: abundances stars: evolution stars: supernovae Galaxy:abundance Galaxy: formation Galaxy: evolution nucleosynthesis
摘 要:Type II and Ib/c supernovae (SNe II and Ib/c) have made major stellar nu- cleosynthetic contributions to the inventories of stable nuclides during chemical evolu- tion of the Galaxy. A case study is performed here with the help of recently developed numerical simulations of Galactic chemical evolution in the solar neighborhood to un- derstand the contributions of SNe II and Ib/c by comparing the stellar nucleosynthetic yields obtained by two leading groups in this field. These stellar nucleosynthetic yields differ in terms of their treatment of stellar evolution and nucleosynthesis. The formu- lation describing Galactic chemical evolution is developed with the recently revised solar metallicity of -0.014. Furthermore, the recent nucleosynthetic yields of stellar models based on the revised solar metallicity are also used. The analysis suggests that it could be difficult to explain, in a self-consistent manner, the various features asso- ciated with the elemental evolutionary trends over Galactic timescales by any single adopted stellar nucleosynthetic model that incorporates SNe II and Ib/c.