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Last Call for Life: Habitability of Terrestrial Planets Orbiting Red Giants and White Dwarfs

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dc.contributor.authorKozakis, Thea
dc.contributor.chairKaltenegger, Lisa
dc.contributor.committeeMemberHayes, Alexander G.
dc.contributor.committeeMemberLloyd, James
dc.contributor.committeeMemberStacey, Gordon John
dc.date.accessioned2021-03-12T17:41:51Z
dc.date.available2021-03-12T17:41:51Z
dc.date.issued2020-08
dc.description172 pages
dc.description.abstractAs a star evolves, the orbital distance where liquid water is possible on the surface of an Earth-like planet, the habitable zone, evolves as well. While stellar properties are relatively stable on the main sequence, post-main sequence evolution of a star involves significant changes in stellar temperature and radius, which is reflected in the changing irradiation at a specific orbital distance when the star becomes a red giant, and then later a white dwarf. To search planets in these systems for signs of life it is essential that we understand how stellar evolution influences atmospheric photochemistry along with detectable biosignatures. We use EXO-Prime, which consists of a 1D coupled climate/photochemistry and a line-by-line radiative transfer code, to model the atmospheres and spectra of habitable zone planets around red giants and white dwarfs, and assess the time dependency of detectable biosignatures.
dc.identifier.doihttps://doi.org/10.7298/4zk8-9661
dc.identifier.otherKozakis_cornellgrad_0058F_12088
dc.identifier.otherhttp://dissertations.umi.com/cornellgrad:12088
dc.identifier.urihttps://hdl.handle.net/1813/103045
dc.language.isoen
dc.rightsAttribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectAstrobiology
dc.subjectBiosignatures
dc.subjectExtraterrestrial life
dc.subjectHabitability
dc.subjectStellar Evolution
dc.titleLast Call for Life: Habitability of Terrestrial Planets Orbiting Red Giants and White Dwarfs
dc.typedissertation or thesis
dcterms.licensehttps://hdl.handle.net/1813/59810
thesis.degree.disciplineAstronomy and Space Sciences
thesis.degree.grantorCornell University
thesis.degree.levelDoctor of Philosophy
thesis.degree.namePh. D., Astronomy and Space Sciences

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