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Discerning the difficult-to-detect: star formation in dwarf and low surface brightness galaxies
Descriptive
TitleInfo
Title
Discerning the difficult-to-detect: star formation in dwarf and low surface brightness galaxies
Name
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Wright
NamePart
(type = given)
Anna Charlene
NamePart
(type = date)
1991-
DisplayForm
Anna Charlene Wright
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author
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NamePart
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Brooks
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Alyson
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Alyson Brooks
Affiliation
Advisory Committee
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chair
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Hughes
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Jack
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Jack Hughes
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Advisory Committee
Role
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internal member
Name
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(type = family)
Jha
NamePart
(type = given)
Saurabh
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Saurabh Jha
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Advisory Committee
Role
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internal member
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(type = family)
Halkiadakis
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(type = given)
Eva
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Eva Halkiadakis
Affiliation
Advisory Committee
Role
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(authority = RULIB)
internal member
Name
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NamePart
(type = family)
Munshi
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Ferah
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Ferah Munshi
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Advisory Committee
Role
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outside member
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Rutgers University
Role
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(authority = RULIB)
degree grantor
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NamePart
School of Graduate Studies
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school
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Text
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theses
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ETD doctoral
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2020
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2020-10
Language
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English
Abstract
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In 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.
Subject
(authority = local)
Topic
Dwarf galaxies
Subject
(authority = RUETD)
Topic
Physics and Astronomy
RelatedItem
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TitleInfo
Title
Rutgers University Electronic Theses and Dissertations
Identifier
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ETD_11084
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application/pdf
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Extent
1 online resource (xii, 149 pages) : illustrations
Note
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Ph.D.
Note
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Includes bibliographical references
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School of Graduate Studies Electronic Theses and Dissertations
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rucore10001600001
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NjNbRU
Identifier
(type = doi)
doi:10.7282/t3-wa8b-5n36
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Rights
RightsDeclaration
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The author owns the copyright to this work.
RightsHolder
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Name
FamilyName
Wright
GivenName
Anna
Role
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Type
Permission or license
DateTime
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2020-08-11 19:36:02
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Name
Anna Wright
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Affiliation
Rutgers University. School of Graduate Studies
AssociatedObject
Type
License
Name
Author Agreement License
Detail
I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.
Copyright
Status
Copyright protected
Availability
Status
Open
Reason
Permission or license
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Technical
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2020-08-17T14:52:51
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