Hobby-Eberly Telescope Chemical Abundances of Stars in the Halo (CASH) project : spectroscopic analyses of the first ~80 stars

The Hobby-Eberly Telescope Chemical Abundances of Stars in the Halo (CASH) project aims to characterize the nature of the early universe through the study of metal-poor stars in the stellar halo of the galaxy. Once completed, this will be the largest set of abundances determined for metal-poor stars from high resolution spectra. In this paper, we present chemical abundances and trends of eleven elements for the first ~80 stars of the ~500 star study. These 80 stars serve as a pilot sample to test the automated stellar parameter and abundance determination pipeline newly developed for the CASH project called CASHCODE. Among the pilot sample, two stars with [Fe/H]<-3.5 were discovered and their abundance analysis is discussed.

Name thesis:degree_name

Master of Arts

Level thesis:degree_level

Masters

Discipline thesis:degree_discipline

Astronomy

Grantor

University of Texas at Austin

Year dc:date.issued

2010

Author dc:creator

• Hollek, Julie Ann

Advisor dc:contributor.advisor

• Sneden, Christopher

Committee member dc:contributor.committeemember

• Dinerstein, Harriet

• Metal-poor stars
• Abundances
• Stellar halo

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/2152/ETD-UT-2010-12-2522

OAI identifier oai:identifier

oai:repositories.lib.utexas.edu:2152/ETD-UT-2010-12-2522