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Rising From the Ashes: How the Milky Way Got Its Scars
Rising From the Ashes: How the Milky Way Got Its Scars
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202103526
- ISBN
- 9798280711808
- DDC
- 520
- 서명/저자
- Rising From the Ashes: How the Milky Way Got Its Scars
- 발행사항
- [Sl] : Harvard University, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 177 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-12, Section: B.
- 주기사항
- Advisor: Hernquist, Lars.
- 학위논문주기
- Thesis (Ph.D.)--Harvard University, 2025.
- 초록/해제
- 요약Understanding ancient events in the Milky Way's history is essential for building a consistent picture of galaxy formation and evolution, bridging stellar and chemical evolution models with the extragalactic population. Our galaxy experienced three simultaneous, transformative events 8 Gyr ago: our last major merger, the formation of a bar, and a transition chemical enrichment leading to an alpha-element bimodality. The history of these events is encoded in the present-day observable properties of stars: dynamics (positions and velocities), chemical compositions, and ages. In this thesis, we will make use of numerical simulations tailored to understanding how these historical processes of the Milky Way led to its present-day properties. First, we will propose a solution to the mystery of why the bar rotates rapidly when it is old enough to have slowed down by now. Second, we will propose that our last major merger led to the emergence of the alpha-bimodality via a metallicity-dependent halt in star formation. Finally, we will demonstrate that the formation of the bar might have triggered the formation of the bimodality through the same mechanism. This work demonstrates the rich understandings that can be gleaned from idealized simulations specifically tailored to the Milky Way.
- 일반주제명
- Astronomy
- 일반주제명
- Astrophysics
- 키워드
- Milky Way
- 기타저자
- Harvard University Astronomy
- 기본자료저록
- Dissertations Abstracts International. 86-12B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■020 ▼a9798280711808
■035 ▼a(MiAaPQ)AAI32039351
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a520
■1001 ▼aBeane, Angus William.▼0(orcid)0000-0002-8658-1453
■24510▼aRising From the Ashes: How the Milky Way Got Its Scars
■260 ▼a[Sl]▼bHarvard University▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a177 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-12, Section: B.
■500 ▼aAdvisor: Hernquist, Lars.
■5021 ▼aThesis (Ph.D.)--Harvard University, 2025.
■520 ▼aUnderstanding ancient events in the Milky Way's history is essential for building a consistent picture of galaxy formation and evolution, bridging stellar and chemical evolution models with the extragalactic population. Our galaxy experienced three simultaneous, transformative events 8 Gyr ago: our last major merger, the formation of a bar, and a transition chemical enrichment leading to an alpha-element bimodality. The history of these events is encoded in the present-day observable properties of stars: dynamics (positions and velocities), chemical compositions, and ages. In this thesis, we will make use of numerical simulations tailored to understanding how these historical processes of the Milky Way led to its present-day properties. First, we will propose a solution to the mystery of why the bar rotates rapidly when it is old enough to have slowed down by now. Second, we will propose that our last major merger led to the emergence of the alpha-bimodality via a metallicity-dependent halt in star formation. Finally, we will demonstrate that the formation of the bar might have triggered the formation of the bimodality through the same mechanism. This work demonstrates the rich understandings that can be gleaned from idealized simulations specifically tailored to the Milky Way.
■590 ▼aSchool code: 0084.
■650 4▼aAstronomy
■650 4▼aAstrophysics
■653 ▼aMilky Way
■653 ▼aNumerical simulations
■653 ▼aStellar chemistry
■690 ▼a0606
■690 ▼a0596
■71020▼aHarvard University▼bAstronomy.
■7730 ▼tDissertations Abstracts International▼g86-12B.
■790 ▼a0084
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17357541▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
