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Demonstrating the Effects of Interplanetary Secular Resonances in Exoplanetary Systems Under the Influence of the Stellar Gravitational Quadrupole Moment
Demonstrating the Effects of Interplanetary Secular Resonances in Exoplanetary Systems Und...
Demonstrating the Effects of Interplanetary Secular Resonances in Exoplanetary Systems Under the Influence of the Stellar Gravitational Quadrupole Moment

상세정보

자료유형  
 학위논문 서양
최종처리일시  
20260202104823
ISBN  
9798290992655
DDC  
523
저자명  
Hendon Faridani, Thea.
서명/저자  
Demonstrating the Effects of Interplanetary Secular Resonances in Exoplanetary Systems Under the Influence of the Stellar Gravitational Quadrupole Moment
발행사항  
[Sl] : University of California, Los Angeles, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
197 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-02, Section: B.
주기사항  
Advisor: Naoz, Smadar.
학위논문주기  
Thesis (Ph.D.)--University of California, Los Angeles, 2025.
초록/해제  
요약The purpose of this thesis is to further describe the effects of secular resonances between planets at low inclinations and eccentricities with a special focus on the interactions between these resonances and stellar oblateness. To accomplish this, I led four projects. The first project evaluated the stabilizing power of general relativity precession against external perturbation on compact multi-planet systems. I extended existing stability criteria that neglected general relativity, evaluated the proportion of the exoplanet sample for which the updated criteria produces qualitatively different conclusions, and investigated the stability of undetected inner planets within coplanar observed multi-planet systems. My second project further explored the stability of undetected inner planets within observed systems by considering the effect of evolving stellar oblateness on potential secular resonances. I find that, consistent with previous theory, evolving stellar oblateness causes secular resonances between planets to move through parameter space, causing a wide range of potential inner planet orbits to experience resonance. These sweeping resonances systematically transfer angular momentum between planets, permanently changing the mutual inclinations between planets.In my third project, I consider the three-planet transiting exoplanet sample at large and investigate how often these sweeping resonances from evolving stellar oblateness occur. Ignoring stellar oblateness, these resonances should be exceptionally rare, requiring almost fine-tuned selections of planetary semimajor axes and masses. However, I demonstrate that the resonance-sweeping vastly increases the regions of parameter space where these resonances may occur. Investigating a clean sample of thirty three-planet systems, I find six (20% of the sample) that have masses and semimajor axes that are susceptible to these resonances if their host stars were born with sufficiently high spins. I argue that this finding of 20%, even if only from a sample of thirty, indicates that such resonances are commonplace among the histories of planetary systems. In my fourth project, I show that sweeping resonances from evolving stellar oblateness resonances have significant impact on the observational outcomes of multi-planet transiting systems as they greatly modify the mutual inclinations between planets. As the outer two planets of three planet systems typically align as a result of these resonances, the probability they are observed transiting together increases. However, the inner planet is misaligned from them as a result, reducing the overall probability that the system is observed as a two- or three-planet transiting system. I discuss the implications these systematic effects on transit probabilities may have on the observed exoplanet sample.This thesis demonstrates that events early in the life of a planetary system, such as the stellar spin-down, have long-lasting effects on systems' architectures, and provides insight into how these early events can systematically shape what planetary systems are most amenable to observation.
일반주제명  
Astrophysics
일반주제명  
Astronomy
일반주제명  
Planetology
키워드  
Dynamics
키워드  
Exoplanets
키워드  
Stellar oblateness
키워드  
Planetary system
기타저자  
University of California, Los Angeles Astronomy and Astrophysics 00EB
기본자료저록  
Dissertations Abstracts International. 87-02B.
전자적 위치 및 접속  
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MARC

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■035    ▼a(MiAaPQ)AAI32169560
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a523
■1001  ▼aHendon  Faridani,  Thea.
■24510▼aDemonstrating  the  Effects  of  Interplanetary  Secular  Resonances  in  Exoplanetary  Systems  Under  the  Influence  of  the  Stellar  Gravitational  Quadrupole  Moment
■260    ▼a[Sl]▼bUniversity  of  California,  Los  Angeles▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a197  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-02,  Section:  B.
■500    ▼aAdvisor:  Naoz,  Smadar.
■5021  ▼aThesis  (Ph.D.)--University  of  California,  Los  Angeles,  2025.
■520    ▼aThe  purpose  of  this  thesis  is  to  further  describe  the  effects  of  secular  resonances  between  planets  at  low  inclinations  and  eccentricities  with  a  special  focus  on  the  interactions  between  these  resonances  and  stellar  oblateness.  To  accomplish  this,  I  led  four  projects.  The  first  project  evaluated  the  stabilizing  power  of  general  relativity  precession  against  external  perturbation  on  compact  multi-planet  systems.  I  extended  existing  stability  criteria  that  neglected  general  relativity,  evaluated  the  proportion  of  the  exoplanet  sample  for  which  the  updated  criteria  produces  qualitatively  different  conclusions,  and  investigated  the  stability  of  undetected  inner  planets  within  coplanar  observed  multi-planet  systems.  My  second  project  further  explored  the  stability  of  undetected  inner  planets  within  observed  systems  by  considering  the  effect  of  evolving  stellar  oblateness  on  potential  secular  resonances.  I  find  that,  consistent  with  previous  theory,  evolving  stellar  oblateness  causes  secular  resonances  between  planets  to  move  through  parameter  space,  causing  a  wide  range  of  potential  inner  planet  orbits  to  experience  resonance.  These  sweeping  resonances  systematically  transfer  angular  momentum  between  planets,  permanently  changing  the  mutual  inclinations  between  planets.In  my  third  project,  I  consider  the  three-planet  transiting  exoplanet  sample  at  large  and  investigate  how  often  these  sweeping  resonances  from  evolving  stellar  oblateness  occur.  Ignoring  stellar  oblateness,  these  resonances  should  be  exceptionally  rare,  requiring  almost  fine-tuned  selections  of  planetary  semimajor  axes  and  masses.  However,  I  demonstrate  that  the  resonance-sweeping  vastly  increases  the  regions  of  parameter  space  where  these  resonances  may  occur.  Investigating  a  clean  sample  of  thirty  three-planet  systems,  I  find  six  (20%  of  the  sample)  that  have  masses  and  semimajor  axes  that  are  susceptible  to  these  resonances  if  their  host  stars  were  born  with  sufficiently  high  spins.  I  argue  that  this  finding  of  20%,  even  if  only  from  a  sample  of  thirty,  indicates  that  such  resonances  are  commonplace  among  the  histories  of  planetary  systems.  In  my  fourth  project,  I  show  that  sweeping  resonances  from  evolving  stellar  oblateness  resonances  have  significant  impact  on  the  observational  outcomes  of  multi-planet  transiting  systems  as  they  greatly  modify  the  mutual  inclinations  between  planets.  As  the  outer  two  planets  of  three  planet  systems  typically  align  as  a  result  of  these  resonances,  the  probability  they  are  observed  transiting  together  increases.  However,  the  inner  planet  is  misaligned  from  them  as  a  result,  reducing  the  overall  probability  that  the  system  is  observed  as  a  two-  or  three-planet  transiting  system.  I  discuss  the  implications  these  systematic  effects  on  transit  probabilities  may  have  on  the  observed  exoplanet  sample.This  thesis  demonstrates  that  events  early  in  the  life  of  a  planetary  system,  such  as  the  stellar  spin-down,  have  long-lasting  effects  on  systems'  architectures,  and  provides  insight  into  how  these  early  events  can  systematically  shape  what  planetary  systems  are  most  amenable  to  observation.
■590    ▼aSchool  code:  0031.
■650  4▼aAstrophysics
■650  4▼aAstronomy
■650  4▼aPlanetology
■653    ▼aDynamics
■653    ▼aExoplanets
■653    ▼aStellar  oblateness
■653    ▼aPlanetary  system
■690    ▼a0596
■690    ▼a0606
■690    ▼a0590
■71020▼aUniversity  of  California,  Los  Angeles▼bAstronomy  and  Astrophysics  00EB.
■7730  ▼tDissertations  Abstracts  International▼g87-02B.
■790    ▼a0031
■791    ▼aPh.D.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17359026▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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