The Discovery and Characterization of an Ultracompact Hot Subdwarf and Brown Dwarf Binary System
Stellar binary systems are astronomical objects made of two stars gravitationally bound to each other. In some of these systems, the stars are so close that they interact with each other and affect the formation and evolution of one another. As a result, understanding these objects can provide insig...
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Thesis |
| Published: |
Massachusetts Institute of Technology
2023
|
| Online Access: | https://hdl.handle.net/1721.1/151260 |
| _version_ | 1811074083307126784 |
|---|---|
| author | Blomberg, Lisa Nicole |
| author2 | Burdge, Kevin B. |
| author_facet | Burdge, Kevin B. Blomberg, Lisa Nicole |
| author_sort | Blomberg, Lisa Nicole |
| collection | MIT |
| description | Stellar binary systems are astronomical objects made of two stars gravitationally bound to each other. In some of these systems, the stars are so close that they interact with each other and affect the formation and evolution of one another. As a result, understanding these objects can provide insight into various stellar processes and astrophysical phenomena. In my project, I focused on studying a type of ultra-compact binary system called an HW Vir class binary – which is comprised of a hot sub dwarf and a brown dwarf. Because HW Vir systems can only be produced through the common envelope effect (CEE), understanding their physical parameters allows us to better understand the limitations of the CEE. For example, by studying binaries with the lowest mass companion that have survived the CEE, it allows us to draw conclusions about the lower bound on the companion mass that is able to survive envelope ejection. In my thesis, I outline the methods I used to search for these binary systems and model the lightcurve of ZTFJ2203+4824, a 78-minute orbital period HW Vir class binary that I discovered. |
| first_indexed | 2024-09-23T09:42:53Z |
| format | Thesis |
| id | mit-1721.1/151260 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T09:42:53Z |
| publishDate | 2023 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/1512602023-08-01T04:10:05Z The Discovery and Characterization of an Ultracompact Hot Subdwarf and Brown Dwarf Binary System Blomberg, Lisa Nicole Burdge, Kevin B. Chakrabarty, Deepto Massachusetts Institute of Technology. Department of Physics Stellar binary systems are astronomical objects made of two stars gravitationally bound to each other. In some of these systems, the stars are so close that they interact with each other and affect the formation and evolution of one another. As a result, understanding these objects can provide insight into various stellar processes and astrophysical phenomena. In my project, I focused on studying a type of ultra-compact binary system called an HW Vir class binary – which is comprised of a hot sub dwarf and a brown dwarf. Because HW Vir systems can only be produced through the common envelope effect (CEE), understanding their physical parameters allows us to better understand the limitations of the CEE. For example, by studying binaries with the lowest mass companion that have survived the CEE, it allows us to draw conclusions about the lower bound on the companion mass that is able to survive envelope ejection. In my thesis, I outline the methods I used to search for these binary systems and model the lightcurve of ZTFJ2203+4824, a 78-minute orbital period HW Vir class binary that I discovered. S.B. 2023-07-31T19:26:45Z 2023-07-31T19:26:45Z 2023-06 2023-05-18T19:58:04.496Z Thesis https://hdl.handle.net/1721.1/151260 In Copyright - Educational Use Permitted Copyright retained by author(s) https://rightsstatements.org/page/InC-EDU/1.0/ application/pdf Massachusetts Institute of Technology |
| spellingShingle | Blomberg, Lisa Nicole The Discovery and Characterization of an Ultracompact Hot Subdwarf and Brown Dwarf Binary System |
| title | The Discovery and Characterization of an Ultracompact Hot Subdwarf and Brown Dwarf Binary System |
| title_full | The Discovery and Characterization of an Ultracompact Hot Subdwarf and Brown Dwarf Binary System |
| title_fullStr | The Discovery and Characterization of an Ultracompact Hot Subdwarf and Brown Dwarf Binary System |
| title_full_unstemmed | The Discovery and Characterization of an Ultracompact Hot Subdwarf and Brown Dwarf Binary System |
| title_short | The Discovery and Characterization of an Ultracompact Hot Subdwarf and Brown Dwarf Binary System |
| title_sort | discovery and characterization of an ultracompact hot subdwarf and brown dwarf binary system |
| url | https://hdl.handle.net/1721.1/151260 |
| work_keys_str_mv | AT blomberglisanicole thediscoveryandcharacterizationofanultracompacthotsubdwarfandbrowndwarfbinarysystem AT blomberglisanicole discoveryandcharacterizationofanultracompacthotsubdwarfandbrowndwarfbinarysystem |