Font Size: a A A

Decomposing Element Abundances Of Metal-poor Stars In The Fornax Dwarf Galaxy

Posted on:2020-07-14Degree:MasterType:Thesis
Country:ChinaCandidate:Z Y M YangFull Text:PDF
GTID:2370330602458530Subject:Condensed matter physics
Abstract/Summary:PDF Full Text Request
The abundances of metal-poor stars of 3 globular clusters in the Fornax dwarf spheroidal galaxy have been decomposed to several processes and constracted with observation.As the comparation,we decompose the abundances of metal-poor stars in globular cluster NGC 5824 and r-process stars in the Reticulum ?.The abundances of metal-poor stars in the globular clusters of Fornax dwarf galaxy could be decomposed by main r-process component,weak r-process component and p-component.The abundances of most metal-poor stars in the globular clusters NGC 5824 have been decomposed by main r-process component,weak r-process component and p-component.There are two stars which include main s-process component abundances.The stars' abundances of Reticulum ? could be decomposed by main r-process component,weak r-process component and p-component.There isn't big difference among stars' components in the same globular cluster as for the stars' components of Fornax dwarf spheroidal galaxy globular cluster C11 and C12.And the contribution of different components is similar among stars.The stars inside of the same globular cluster may not be polluted by elements enrichment which happened in the globular cluster.The abundance patterns of 3 stars in C13 are different.The contribution of super massive stars to NGC 5824 is larger than the contribution of super massive stars to globular clusters in the Fornax,which suggests the relative contributions of massive stars for Milky Way are larger than Fornax dwarf galaxy.The contribution of main r-process to Reticulum ? is obviously larger than the contribution to the Fornax globular clusters.
Keywords/Search Tags:Dwarf galaxy, Globular cluster, Elemental abundance, Rapid neutron capture process
PDF Full Text Request
Related items