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Discerning the difficult-to-detect: star formation in dwarf and low surface brightness galaxies
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Wright, Anna Charlene. Discerning the difficult-to-detect: star formation in dwarf and low surface brightness galaxies. Retrieved from https://doi.org/doi:10.7282/t3-wa8b-5n36

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TitleDiscerning the difficult-to-detect: star formation in dwarf and low surface brightness galaxies
NameWright, Anna Charlene (author); Brooks, Alyson (chair); Hughes, Jack (internal member); Jha, Saurabh (internal member); Halkiadakis, Eva (internal member); Munshi, Ferah (outside member); Rutgers University; School of Graduate Studies
Date Created2020
Other Date2020-10 (degree)
SubjectDwarf galaxies, Physics and Astronomy
Extent1 online resource (xii, 149 pages) : illustrations
DescriptionIn this work, we use cosmological simulations to study patterns of star formation in galaxies that have traditionally been underrepresented in surveys of galaxy formation across cosmic history. Because simulations have typically not been tuned to produce them, dwarf galaxies and low surface brightness galaxies provide a unique opportunity to test whether or not the models that we use to make bright, high mass galaxies are universal. We find that our simulations are able to reproduce a broad range of dwarf galaxy star formation histories, as well as low surface brightness galaxies, and we use these results to interpret the origin of specific types of galaxies. We identify a population of star-forming dwarf galaxies in our simulations that have experienced long periods of little to no star formation and whose properties are consistent with several dwarf galaxies observed in the local universe. We find that star formation can be reignited in these galaxies even billions of years after a quenching event through interactions with streams of gas in the intergalactic medium that compress hot halo gas. We also identify large populations of ultra-diffuse and classical low surface brightness galaxies in our simulations. Their properties are broadly consistent with those of observed samples and we predict that future observations will find that the star formation rates, HI masses, and colors of isolated ultra-diffuse galaxies are typical for their stellar masses. We find that both ultra-diffuse galaxies and classical low surface brightness galaxies are the products of major mergers that increase their angular momentum and cause star formation within the galaxies to move outward. In general, we find that environmental interactions have a significant impact on star formation in dwarf and low surface brightness galaxies - even those that appear isolated at the present day.
NotePh.D.
NoteIncludes bibliographical references
Genretheses, ETD doctoral
Persistent URLhttps://doi.org/doi:10.7282/t3-wa8b-5n36
LanguageEnglish
CollectionSchool of Graduate Studies Electronic Theses and Dissertations
Organization NameRutgers, The State University of New Jersey
RightsThe author owns the copyright to this work.
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