Peter Haramis

In my research, I’ve analyzed the spectra of several metal-poor stars in the Milky Way Galaxy. This analysis will contribute to an understanding of the composition of the early Milky Way Galaxy.

Metal-poor stars provide insight into the conditions of the early Milky Way Galaxy, particularly the early formation of the heaviest elements in the periodic table, which form via the rapid (r-) neutron-capture process. In this poster, I present early results of a portrait analysis of 3 highly r-process enhanced metal-poor stars, based on high signal-to-noise ratio (S/N), high-resolution spectra taken with the Harlan J. Smith 2.7 m telescope at McDonald Observatory. Stellar parameters were determined with photometric data and abundances were determined with the line analysis code, Spectroscopy Made Hard(er). Abundances are compared with Solar r-process and s-process patterns, in order to learn about nucleosynthetic origins of the r-process material.