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dc.contributor.authorMelendez, Matthew,author.en_US
dc.date.accessioned2019-05-16T20:55:28Z
dc.date.available2019-05-16T20:55:28Z
dc.date.created2019en_US
dc.date.issued2019en_US
dc.identifieraleph-005169645en_US
dc.identifierTCU Master Thesisen_US
dc.identifier.urihttps://repository.tcu.edu/handle/116099117/25374
dc.descriptionM.S.Texas Christian University2019en_US
dc.descriptionDepartment of Physics and Astronomy; advisor, Peter M. Frinchaboy III.en_US
dc.descriptionIncludes bibliographical references.en_US
dc.descriptionOnline resource; title from PDF title page (viewed July 3, 2019).en_US
dc.description.abstractSagittarius (Sgr), a dwarf spheroidal galaxy and satellite to the Milky Way, is in the process of being tidally torn apart and stripped of its stars. To study the chemical distribution of Sgr, we analyzed spectra for thousands of stars across the galaxy, whose membership has been previously confirmed. We have analyzed the stellar component of Sgr by using The Cannon, a data-driven method for determining stellar parameters (temperature, surface gravity, [M/H], [a/M], and elemental abundances) from stellar spectra, trained using stars observed by the SDSS/APOGEE survey. The Cannon analysis produced accurate abundances for the 1,100 Sgr member stars that confirms a metallicity gradient across the Sgr galaxy. Additionally, we found evidence for enhanced [a/M] for stars with near-solar [M/H], likely evidence for recent, 2 Gyr burst of star formation, similar to the Large Magellanic Cloud.en_US
dc.format.extent1 online resource (ix, 91 pages) :en_US
dc.format.mediumFormat: Onlineen_US
dc.relation.ispartofUMI thesis.en_US
dc.titleUsing The Cannon to study the chemistry of the Sagittarius dwarf galaxy /en_US
dc.typeTexten_US
local.academicunitDepartment of Physics and Astronomy
local.subjectareaPhysics and Astronomy


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