Show simple item record

dc.contributor.advisorSmith, Nathan
dc.contributor.authorDICKINSON, DANIELLE ASHLEY
dc.creatorDICKINSON, DANIELLE ASHLEY
dc.date.accessioned2022-11-03T18:55:06Z
dc.date.available2022-11-03T18:55:06Z
dc.date.issued2021
dc.identifier.citationDICKINSON, DANIELLE ASHLEY. (2021). AN OPTICAL STUDY OF THE SUPERLUMINOUS TYPE IIN SUPERNOVA ASASSN-14IL (Bachelor's thesis, University of Arizona, Tucson, USA).
dc.identifier.urihttp://hdl.handle.net/10150/666597
dc.description.abstractWe present a series of ground and space-based photometry and ground-based spectroscopy of the Superluminous Type IIn Supernova (SLSN IIn) ASASSN-14il, which shows evidence for strong interaction with pre-existing circumstellar material (CSM). Our observations constrain the speed of the supernova shock and ejecta, as well as the speed, mass, and extent of the CSM that was ejected off the SN immediately preceding eruption. In our spectra, we measure the maximum speed of the CSM to be 176 km s−1 , being following by a 1600 km s−1 shock and 7065 km s−1 ejecta, by fitting and analyzing statistical distributions to the components of Hα emission. Our spectra reveal progressive blueshifting of the intermediate-width Hα emission from dust within the SN ejecta. During the 11 years before its death, we calculate that ASASSN-14il experienced extreme mass loss on the order of 1 M yr−1 , imparting 4.03×1048 erg of kinetic energy to the CSM. Integrating its light curve over the first 120 days, we found that ASASSN-14il radiated at least E = 5.74 × 1050erg in visual light alone, giving a lower limit to the total radiated energy.
dc.language.isoen
dc.publisherThe University of Arizona.
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectcircumstellar matter
dc.subjectstars: evolution
dc.subjectstars: winds
dc.titleAN OPTICAL STUDY OF THE SUPERLUMINOUS TYPE IIN SUPERNOVA ASASSN-14IL
dc.typeElectronic thesis
dc.typetext
thesis.degree.grantorUniversity of Arizona
thesis.degree.levelbachelors
thesis.degree.disciplineAstronomy
thesis.degree.disciplineHonors College
thesis.degree.nameB.S.
refterms.dateFOA2022-11-03T18:55:06Z


Files in this item

Thumbnail
Name:
azu_etd_hr_2021_0074_sip1_m.pdf
Size:
2.927Mb
Format:
PDF

This item appears in the following Collection(s)

Show simple item record