자료유형  

 학위논문

Control Number  

0017165005

International Standard Book Number  

9798384461821

Dewey Decimal Classification Number  

520

Main Entry-Personal Name  

Patton, Rachel Arielle.

Publication, Distribution, etc. (Imprint  

[S.l.] : The Ohio State University., 2024

Publication, Distribution, etc. (Imprint  

Ann Arbor : ProQuest Dissertations & Theses, 2024

Physical Description  

230 p.

General Note  

Source: Dissertations Abstracts International, Volume: 86-04, Section: B.

General Note  

Advisor: Pinsonneault, Marc.

Dissertation Note  

Thesis (Ph.D.)--The Ohio State University, 2024.

Summary, Etc.  

요약The lives, deaths, and afterlives of stars play a fundamental role in astrophysics. From planet formation and feedback in star-forming regions to galactic chemical evolution and gravitational wave progenitors, understanding stellar evolution is essential to understanding the observable Universe. A critical, but still very poorly understood, aspect of this topic is the impact of binarity on stellar evolution. While single stars follow evolutionary tracks set by their initial mass and metallicity, stars which interact with a binary stellar companion will have both their internal structures and global properties altered in ways unattainable through single star evolution. Unfortunately, the physics governing these interactions remains highly uncertain. However, we are uniquely poised to understand binary interaction and its impact on stellar evolution by combining recent advances in both observation and computation.Astronomy has entered an era of large surveys. The Gaia space telescope is collecting photometry, astrometry, and parallaxes for billions of stars. The Apache Point Observatory Galactic Evolution Experiment (APOGEE) as part of the Sloan Digital Sky Survey (SDSS) has collected spectroscopy for hundreds of thousands of stars. We also have long-baseline, time-series photometry for stars from Kepler and the Transiting Exoplanet Survey Satellite (TESS). On the computational front, advances in computing power have enabled us to run large grids of 1D stellar evolution models relatively cheaply. There are also a preponderance of 1D stellar evolution codes utilizing different numerical methods and imbued with different assumptions. These models and codes allow us to test individual physical assumptions and see how the evolution is changed.In my work, I leverage 1D stellar evolution models with stellar parameters from large surveys to study the effects of different types of interactions on the structure and evolution of stars of different masses. I first present an observational study of rotationally enhanced red giants, found via exploiting failure modes of APOGEE's spectroscopic processing pipeline. I identified a large population of interacting and post-interaction giants as well as a population of apparently single rotationally enhanced giants. I found two new failure modes of of the APOGEE pipeline as well.In the latter part of my dissertation I describe three modelling studies, examining the structural impacts of different interactions on massive stars due to the relationship between massive star structure and the ability to explode. I first present a grid of carbon-oxygen (CO) core models evolved from carbon ignition to core-collapse in order to fill in the late-stage evolution overlooked in binary population synthesis (BPS) codes. I reveal a complex landscape of final structures and present a prescription for use in BPS codes to predict explosion outcome based on the final structure of the core. I then apply this prescription to single and binary models from BPASS, and show how the structure-based prescription produces different neutron star and black hole mass distributions than the prescription based on CO-core mass commonly employed in BPS codes. Lastly, I present an ongoing study examining one particular interaction, an early case B merger, looking at long-term structural changes caused by merging as well as the differences by creating the merger product in two different ways.

Subject Added Entry-Topical Term  

Astronomy.

Subject Added Entry-Topical Term  

Nuclear physics.

Subject Added Entry-Topical Term  

Astrophysics.

Subject Added Entry-Topical Term  

Computational physics.

Index Term-Uncontrolled  

Binary interaction

Index Term-Uncontrolled  

Stellar evolution

Index Term-Uncontrolled  

Binary population synthesis

Index Term-Uncontrolled  

Carbon-oxygen core models

Index Term-Uncontrolled  

Spectroscopic identification

Added Entry-Corporate Name  

The Ohio State University Astronomy

Host Item Entry  

Dissertations Abstracts International. 86-04B.

Electronic Location and Access  

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Control Number  

joongbu:655983