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Observations of Cosmic Brunch: Pancake-Shaped Disk Galaxies and Food for Star Formation Around Cosmic Noon
Observations of Cosmic Brunch: Pancake-Shaped Disk Galaxies and Food for Star Formation Around Cosmic Noon
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211151351
- ISBN
- 9798382843476
- DDC
- 523
- 서명/저자
- Observations of Cosmic Brunch: Pancake-Shaped Disk Galaxies and Food for Star Formation Around Cosmic Noon
- 발행사항
- [Sl] : Cornell University, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 161 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 85-12, Section: B.
- 주기사항
- Advisor: Stacey, Gordon.
- 학위논문주기
- Thesis (Ph.D.)--Cornell University, 2024.
- 초록/해제
- 요약majority of the stellar mass in all galaxies was assembled during the Epoch of Peak Star Formation Rate Density ("Cosmic Noon"), from z ∼ 1 − 3. An active area of research is the study of extreme star-formation rates and how they were sustained and regulated. Recent surveys have shown that galaxies with high star-formation rates are heavily obscured by dust. Spectroscopy provides significant information about the physical conditions of star-forming gas, but dust obscuration can make it difficult to robustly interpret optical and uv observations. To peer through the dust and provide insight into these questions, I helped build the Second-Generation z (redshift) and Early Universe Spectrometer (ZEUS-2), a long-slit echelle-grating spectrometer deployed on the Atacama Pathfinder EXperiment (APEX) telescope in northern Chile. ZEUS-2 operates in the 200-, 350-, and 450-micron telluric windows at medium resolution (R ∼ 1000), making it one of the few single-dish instruments currently capable of observing far-infrared fine-structure lines from high-redshift galaxies. Along with the team at Cornell, I have performed a survey of [OIII] 88 µm line emission in z ∼ 3 star-forming galaxies. Only O-type stars can produce enough high-energy UV photons to maintain doubly-ionized oxygen in the ism, and 88 µm light is not significantly extincted by dust, making the [OIII] 88 µm line a robust tracer of high-mass stars produced in an ongoing star-formation episode. I also present first-light results from ZEUS-2's 200 µm array on APEX.In this dissertation, I present the results of this survey, along with significant improvements I have made to our system during my Ph.D. studies. I also present detailed ALMA and JWST follow-up observations of ZEUS-1 target and starbursting quasar SDSS J1000. SDSS j1000 is a very interesting system consisting of two interacting galaxies: one of which is an extreme starburst and quasar host, the other a typical quiescent galaxy. The quasar host is modeled using [CII] 158 µm ALMA observations and found to have a well-ordered disk-like structure, and a short dynamical time with respect to its companion, resulting in an imminent major merger which represents an important precursor to the most-massive dusty galaxies in the local Universe. Together, these projects provide important insight into the history of star formation at a critical time in the history of the Universe.
- 일반주제명
- Astrophysics
- 일반주제명
- Astronomy
- 일반주제명
- Applied physics
- 일반주제명
- Optics
- 일반주제명
- Atmospheric sciences
- 키워드
- Instrumentation
- 키워드
- Star formation
- 기타저자
- Cornell University Astronomy and Space Sciences
- 기본자료저록
- Dissertations Abstracts International. 85-12B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520250211151351
■006m o d
■007cr#unu||||||||
■020 ▼a9798382843476
■035 ▼a(MiAaPQ)AAI31243253
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a523
■1001 ▼aRooney, Christopher Thomas.▼0(orcid)0000-0002-8513-2971
■24510▼aObservations of Cosmic Brunch: Pancake-Shaped Disk Galaxies and Food for Star Formation Around Cosmic Noon
■260 ▼a[Sl]▼bCornell University▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a161 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 85-12, Section: B.
■500 ▼aAdvisor: Stacey, Gordon.
■5021 ▼aThesis (Ph.D.)--Cornell University, 2024.
■520 ▼amajority of the stellar mass in all galaxies was assembled during the Epoch of Peak Star Formation Rate Density ("Cosmic Noon"), from z ∼ 1 − 3. An active area of research is the study of extreme star-formation rates and how they were sustained and regulated. Recent surveys have shown that galaxies with high star-formation rates are heavily obscured by dust. Spectroscopy provides significant information about the physical conditions of star-forming gas, but dust obscuration can make it difficult to robustly interpret optical and uv observations. To peer through the dust and provide insight into these questions, I helped build the Second-Generation z (redshift) and Early Universe Spectrometer (ZEUS-2), a long-slit echelle-grating spectrometer deployed on the Atacama Pathfinder EXperiment (APEX) telescope in northern Chile. ZEUS-2 operates in the 200-, 350-, and 450-micron telluric windows at medium resolution (R ∼ 1000), making it one of the few single-dish instruments currently capable of observing far-infrared fine-structure lines from high-redshift galaxies. Along with the team at Cornell, I have performed a survey of [OIII] 88 µm line emission in z ∼ 3 star-forming galaxies. Only O-type stars can produce enough high-energy UV photons to maintain doubly-ionized oxygen in the ism, and 88 µm light is not significantly extincted by dust, making the [OIII] 88 µm line a robust tracer of high-mass stars produced in an ongoing star-formation episode. I also present first-light results from ZEUS-2's 200 µm array on APEX.In this dissertation, I present the results of this survey, along with significant improvements I have made to our system during my Ph.D. studies. I also present detailed ALMA and JWST follow-up observations of ZEUS-1 target and starbursting quasar SDSS J1000. SDSS j1000 is a very interesting system consisting of two interacting galaxies: one of which is an extreme starburst and quasar host, the other a typical quiescent galaxy. The quasar host is modeled using [CII] 158 µm ALMA observations and found to have a well-ordered disk-like structure, and a short dynamical time with respect to its companion, resulting in an imminent major merger which represents an important precursor to the most-massive dusty galaxies in the local Universe. Together, these projects provide important insight into the history of star formation at a critical time in the history of the Universe.
■590 ▼aSchool code: 0058.
■650 4▼aAstrophysics
■650 4▼aAstronomy
■650 4▼aApplied physics
■650 4▼aOptics
■650 4▼aAtmospheric sciences
■653 ▼aFar-infrared spectroscopy
■653 ▼aGrating spectrometer
■653 ▼aHigh-redshift galaxies
■653 ▼aInstrumentation
■653 ▼aStar formation
■653 ▼aTransition-Edge Sensors
■690 ▼a0596
■690 ▼a0606
■690 ▼a0752
■690 ▼a0215
■690 ▼a0725
■71020▼aCornell University▼bAstronomy and Space Sciences.
■7730 ▼tDissertations Abstracts International▼g85-12B.
■790 ▼a0058
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17161403▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
