Mass assembly in star formation via interstellar filaments

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dc.contributor.author Chen, Michael Chun-Yuan
dc.date.accessioned 2021-01-29T06:12:38Z
dc.date.copyright 2021 en_US
dc.date.issued 2021-01-28
dc.identifier.uri http://hdl.handle.net/1828/12623
dc.description.abstract Understanding how diffuse molecular clouds at large scales (~10 pc) assemble mass into dense, star-forming cores at small scales (~ 0.1 pc) is crucial to building a holistic theory of star formation. While recent observations suggest that filaments play an important role in the mass assembly of dense cores, detailed gas kinematics studies are still lacking. My dissertation presents three innovative techniques that enable us to study star-forming filaments' complex gas kinematics in unprecedented detail: multi-component spectral fit, multi-dimensional filament identification, and membership assignment of velocity-coherent structures. Through these techniques, I analyzed star-forming filaments in the Perseus Molecular Cloud and unveiled unexpectedly complex velocity structures at scales where filaments are well resolved, to as low as the 0.01 pc scale. Moreover, the correlations I discovered between the various filament properties further suggest a scenario in which thermally supercritical filaments grow continuously via accretion from their surroundings while simultaneously forming cores through fragmentation along their lengths. en_US
dc.language English eng
dc.language.iso en en_US
dc.rights Available to the World Wide Web en_US
dc.subject star formation en_US
dc.subject molecular clouds en_US
dc.subject interstellar medium en_US
dc.subject astrophysics en_US
dc.subject astronomy en_US
dc.subject turbulence en_US
dc.subject gas kinematics en_US
dc.subject interstellar filaments en_US
dc.subject molecular spectroscopy en_US
dc.subject ISM: clouds en_US
dc.subject ISM: kinematics and dynamics en_US
dc.subject ISM: structure en_US
dc.subject stars: formation en_US
dc.subject radio astronomy en_US
dc.title Mass assembly in star formation via interstellar filaments en_US
dc.type Thesis en_US
dc.contributor.supervisor Di Francesco, James
dc.contributor.supervisor Willis, Jon
dc.degree.department Department of Physics and Astronomy en_US
dc.degree.level Doctor of Philosophy Ph.D. en_US
dc.identifier.bibliographicCitation Chen, M. C.-Y., Di Francesco, J., Rosolowsky, E., et al. 2020, The Astrophysical Journal, 891, 84. en_US
dc.description.scholarlevel Graduate en_US
dc.description.embargo 2022-01-08

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