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Full-Text Articles in Physical Sciences and Mathematics
Star Formation In The Ngc 5846 Group Of Galaxies, Lucas Viani
Star Formation In The Ngc 5846 Group Of Galaxies, Lucas Viani
Honors Theses
Environmental interactions in groups and clusters of galaxies are thought to alter the evolution of member galaxies. The goal of this research was to analyze gas and star formation properties of galaxies in the NGC 5846 group. A sample of group galaxies was observed at CTIO (Cerro Tololo Inter-American Observatory in Chile) and KPNO (Kitt Peak National Observatory) using broadband red (R) and narrowband hydrogen emission line (Hα) filters. The images were reduced and analyzed to extract star formation rates and distributions. Neutral hydrogen data from the Arecibo Legacy Fast ALFA (ALFALFA) survey were used to measure the cold neutral …
Comparing Stellar Populations Of Galaxies Across The Hubble Sequence: Reduction Of Pisces Near-Infrared Images, Vaishali Parkash
Comparing Stellar Populations Of Galaxies Across The Hubble Sequence: Reduction Of Pisces Near-Infrared Images, Vaishali Parkash
Honors Theses
To better understand the properties of high redshift galaxies and improve models of galaxy formation, we are investigating color radial profiles to study the stellar age, dust and metallicity distribution of galaxies of varying lumi-nosities and morphological types. Current data obtained in the optical and UV have shown that early-type galaxies have a flat color profile, or are bluer at larger radii, while late-type spirals are redder with increasing radius. These trends are believed to be linked with stellar population ages or dust. To break the age-dust degeneracy as well as to avoid the metallicity dependence, we have obtained near-infrared …