Stellar Death in the Nearby Universe
| Main Author: | |
|---|---|
| Language: | English |
| Published: |
The Ohio State University / OhioLINK
2017
|
| Subjects: | |
| Online Access: | http://rave.ohiolink.edu/etdc/view?acc_num=osu149873738500975 |
| id |
ndltd-OhioLink-oai-etd.ohiolink.edu-osu149873738500975 |
|---|---|
| record_format |
oai_dc |
| spelling |
ndltd-OhioLink-oai-etd.ohiolink.edu-osu1498737385009752021-08-03T07:02:55Z Stellar Death in the Nearby Universe Holoien, Thomas Warren-Son Astronomy ASAS-SN supernovae tidal disruption events sky surveys The night sky is replete with transient and variable events that help shape our universe. The violent, explosive deaths of stars represent some of the most energetic of these events, as a single star is able to outshine billions during its final moments. Aside from imparting significant energy into their host environments, stellar deaths are also responsible for seeding heavy elements into the universe, regulating star formation in their host galaxies, and affecting the evolution of supermassive black holes at the centers of their host galaxies. The large amount of energy output during these events allows them to be seen from billions of lightyears away, making them useful observational probes of physical processes important to many fields of astronomy.In this dissertation I present a series of observational studies of two classes of transients associated with the deaths of stars in the nearby universe: tidal disruption events (TDEs) and supernovae (SNe). Discovered by the All-Sky Automated Survey for Supernovae (ASAS-SN), the objects I discuss were all bright and nearby, and were subject to extensive follow-up observational campaigns. In the first three studies, I present observational data and theoretical models of ASASSN-14ae, ASASSN-14li, and ASASSN-15oi, three TDEs discovered by ASAS-SN and three of the most well-studied TDEs ever discovered. Next I present the discovery of ASASSN-13co, an SN that does not conform to the traditional model of Type II SNe. Finally, I discuss the full sample of bright SNe discovered from 2014 May 1 through 2016 December 31, which is significantly less biased than previous nearby SN samples due to the ASAS-SN survey approach, and perform statistical analyses on this population that will be used for future studies of nearby SNe and their hosts. 2017-10-27 English text The Ohio State University / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=osu149873738500975 http://rave.ohiolink.edu/etdc/view?acc_num=osu149873738500975 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws. |
| collection |
NDLTD |
| language |
English |
| sources |
NDLTD |
| topic |
Astronomy ASAS-SN supernovae tidal disruption events sky surveys |
| spellingShingle |
Astronomy ASAS-SN supernovae tidal disruption events sky surveys Holoien, Thomas Warren-Son Stellar Death in the Nearby Universe |
| author |
Holoien, Thomas Warren-Son |
| author_facet |
Holoien, Thomas Warren-Son |
| author_sort |
Holoien, Thomas Warren-Son |
| title |
Stellar Death in the Nearby Universe |
| title_short |
Stellar Death in the Nearby Universe |
| title_full |
Stellar Death in the Nearby Universe |
| title_fullStr |
Stellar Death in the Nearby Universe |
| title_full_unstemmed |
Stellar Death in the Nearby Universe |
| title_sort |
stellar death in the nearby universe |
| publisher |
The Ohio State University / OhioLINK |
| publishDate |
2017 |
| url |
http://rave.ohiolink.edu/etdc/view?acc_num=osu149873738500975 |
| work_keys_str_mv |
AT holoienthomaswarrenson stellardeathinthenearbyuniverse |
| _version_ |
1719452505133285376 |