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Studying Global and Local Star Formation Processes With Young Massive Stars in NGC 6946
Studying Global and Local Star Formation Processes With Young Massive Stars in NGC 6946
Studying Global and Local Star Formation Processes With Young Massive Stars in NGC 6946

Detailed Information

자료유형  
 학위논문 서양
최종처리일시  
20250211152758
ISBN  
9798384093725
DDC  
520
저자명  
Tran, Debby.
서명/저자  
Studying Global and Local Star Formation Processes With Young Massive Stars in NGC 6946
발행사항  
[Sl] : University of Washington, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
159 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-03, Section: B.
주기사항  
Advisor: Williams, Benjamin;Levesque, Emily.
학위논문주기  
Thesis (Ph.D.)--University of Washington, 2024.
초록/해제  
요약I analyze resolved near-ultraviolet (NUV) stellar photometry of star-forming galaxy NGC 6946 (The Fireworks Galaxy) taken with the Hubble Space Telescope's (HST) Wide Field Camera 3 (WFC3) with F275W and F336W filters to put new constraints on the relationships between the spatial distribution of ages, formation rate, masses, colors, and luminosity for massive stars and massive star clusters. In Chapter 2, we observe a correlation between age and density in the spiral arms and test diagnostics for star formation rate (SFR) and whether they are consistent with the unusually high observed rate of supernovae (10 in the past century). In Chapter 3, I modify a computer-vision algorithm to automate cluster candidate finding and produce a cluster and association candidate catalog. I measure the luminosity, effective radius, and color of each of the candidates. With the catalog obtained in Chapter 3, in Chapter 4, I constrain the cluster mass-radius relation and mass function of clusters. We measure the age of the clusters and determine the cluster formation efficiency of NGC 6946. We will publicly release this new clustering algorithm to the community and this observational data enabling detailed comparisons to numerical simulations. In Chapter 5, my future work, I discuss my progress and plans to measure an additional 13 bands (∼200 visits) of archival optical and infrared (IR) HST WFC3 and Advanced Camera for Surveys (ACS) photometry of individual stars and clusters covering some areas in NGC 6946. With the planned stellar photometry catalog, I will fit spectral energy distributions (SEDs) for over 8 million stars in NGC 6946 to investigate how local environments and large scale mechanisms influence the formation of stars.
일반주제명  
Astronomy
일반주제명  
Astrophysics
일반주제명  
Physics
키워드  
Extragalactic
키워드  
Massive stars
키워드  
Star formation
키워드  
Stellar populations
키워드  
Spectral energy distributions
기타저자  
University of Washington Astronomy
기본자료저록  
Dissertations Abstracts International. 86-03B.
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

MARC

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■1001  ▼aTran,  Debby.
■24510▼aStudying  Global  and  Local  Star  Formation  Processes  With  Young  Massive  Stars  in  NGC  6946
■260    ▼a[Sl]▼bUniversity  of  Washington▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a159  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-03,  Section:  B.
■500    ▼aAdvisor:  Williams,  Benjamin;Levesque,  Emily.
■5021  ▼aThesis  (Ph.D.)--University  of  Washington,  2024.
■520    ▼aI  analyze  resolved  near-ultraviolet  (NUV)  stellar  photometry  of  star-forming  galaxy  NGC  6946  (The  Fireworks  Galaxy)  taken  with  the  Hubble  Space  Telescope's  (HST)  Wide  Field  Camera  3  (WFC3)  with  F275W  and  F336W  filters  to  put  new  constraints  on  the  relationships  between  the  spatial  distribution  of  ages,  formation  rate,  masses,  colors,  and  luminosity  for  massive  stars  and  massive  star  clusters.  In  Chapter  2,  we  observe  a  correlation  between  age  and  density  in  the  spiral  arms  and  test  diagnostics  for  star  formation  rate  (SFR)  and  whether  they  are  consistent  with  the  unusually  high  observed  rate  of  supernovae  (10  in  the  past  century).  In  Chapter  3,  I  modify  a  computer-vision  algorithm  to  automate  cluster  candidate  finding  and  produce  a  cluster  and  association  candidate  catalog.  I  measure  the  luminosity,  effective  radius,  and  color  of  each  of  the  candidates.  With  the  catalog  obtained  in  Chapter  3,  in  Chapter  4,  I  constrain  the  cluster  mass-radius  relation  and  mass  function  of  clusters.  We  measure  the  age  of  the  clusters  and  determine  the  cluster  formation  efficiency  of  NGC  6946.  We  will  publicly  release  this  new  clustering  algorithm  to  the  community  and  this  observational  data  enabling  detailed  comparisons  to  numerical  simulations.  In  Chapter  5,  my  future  work,  I  discuss  my  progress  and  plans  to  measure  an  additional  13  bands  (∼200  visits)  of  archival  optical  and  infrared  (IR)  HST  WFC3  and  Advanced  Camera  for  Surveys  (ACS)  photometry  of  individual  stars  and  clusters  covering  some  areas  in  NGC  6946.  With  the  planned  stellar  photometry  catalog,  I  will  fit  spectral  energy  distributions  (SEDs)  for  over  8  million  stars  in  NGC  6946  to  investigate  how  local  environments  and  large  scale  mechanisms  influence  the  formation  of  stars.
■590    ▼aSchool  code:  0250.
■650  4▼aAstronomy
■650  4▼aAstrophysics
■650  4▼aPhysics
■653    ▼aExtragalactic
■653    ▼aMassive  stars
■653    ▼aStar  formation
■653    ▼aStellar  populations
■653    ▼aSpectral  energy  distributions
■690    ▼a0606
■690    ▼a0596
■690    ▼a0605
■71020▼aUniversity  of  Washington▼bAstronomy.
■7730  ▼tDissertations  Abstracts  International▼g86-03B.
■790    ▼a0250
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17163830▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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