2018英特尔ISEF学科最佳作品摘要：物理与天文学 Best of Category Abstract: PHYSICS AND ASTRONOMY

获奖作品基本信息

年份	2018
学科	物理与天文学 PHYSICS AND ASTRONOMY
学校	T.C. Williams High School
国家/州	VA，United States of America

获奖作品名称

Finding Exoplanets by Assessing the Dynamical Packing of Kepler Three- and Four-Candidate Systems

获奖作品摘要

Barnes’ and Raymond’s Packed Planetary System (PPS) hypothesis postulates that planetary formation is efficient and creates dynamically packed planetary systems that cannot contain additional planets. Here I look for unpacked spaces in Kepler multi-candidate systems that should, according to a PPS corollary, contain planets. In doing so, a “roadmap” was created to find potential unidentified planets. Previous research suggests that a system’s dynamical packedness can be quantified using the dynamical spacing ??: the number of mutual Hill radii between adjacent planets (a “planet pair”). Using previously proposed values for minimum ?? (10, 12.3, and 21.7) required for planet pair orbital stability, I determine whether planet pairs in Kepler multi-candidate systems could host an intermediate body (an “unpacked pair”). For each Kepler unpacked pair, the maximum mass of an intermediate body that the pair could host while remaining in stable orbits (“mass capacity”) and the semimajor axis at which this mass could be hosted were calculated. Next, the probable masses were determined. Known packed planet triplets were surveyed to determine the mass capacity each middle planet uses. The results suggest that there could be as many as 254 unidentified intermediate planets assuming a minimum ?? = 12.3. Median mass efficiencies suggest 20% could be Earth-sized and 33% could be Super Earth-sized. The predicted mass and semimajor axis for these potential planets may facilitate detection by characterizing expected transit and radial velocity signals. Ultimately, such observation-based evidence could support or dispute PPS.

 

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高中生科研学术活动 英特尔 Intel ISEF 简介

英特尔国际科学与工程大奖赛，简称 "ISEF"，由美国 Society for Science and the Public（科学和公共服务协会）主办，英特尔公司冠名赞助，是全球规模最大、等级最高的中学生的科研科创赛事。ISEF 的学术活动学科包括了所有数学、自然科学、工程的全部领域和部分社会科学。ISEF 素有全球青少年科学学术活动的“世界杯”之美誉，旨在鼓励学生团队协作，开拓创新，长期专一深入地研究自己感兴趣的课题。

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· 数学 · 物理 · 化学 · 生物 · 计算机 · 工程 ·

学科简介：物理与天文学 PHYSICS AND ASTRONOMY

Physics is the science of matter and energy and of interactions between the two. Astronomy is the study of anything in the universe beyond the Earth.

Subcategories:

Atomic, Molecular, and Optical Physics (AMO): The study of atoms, simple molecules, electrons, light, and their interactions.  Projects studying non-solid state lasers and masers also belong in this subcategory.

Astronomy and Cosmology (AST): The study of space,  the universe as a whole, including its origins and evolution, the physical properties of objects in space and computational astronomy.

Biological Physics (BIP): The study of the physics of biological processes and systems.

Condensed Matter and Materials (MAT): The study of the properties of solids and liquids. Topics such as superconductivity, semi-conductors, complex fluids, and thin films are studied.

Mechanics (MEC): Classical physics and mechanics, including the macroscopic study of forces, vibrations and flows; on solid, liquid and gaseous materials. Projects studying aerodynamics or hydrodynamics also belong in this subcategory.

Nuclear and Particle Physics (NUC): The study of the physical properties of the atomic nucleus and of fundamental particles and the forces of their interaction. Projects developing particle detectors also belong in this subcategory.

Theoretical, Computational, and Quantum Physics (THE): The study of nature, phenomena and the laws of physics employing mathematical or computational methods rather than experimental processes.

Other (OTH): Studies that cannot be assigned to one of the above subcategories. If the project involves multiple subcategories, the principal subcategory should be chosen instead of Other.