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The architecture of a planetary system can influence the habitability of a planet via orbital effects, particularly in the areas of stability and eccentricity. Some of these effects are readily apparent, particularly when they occur on…

Earth and Planetary Astrophysics · Physics 2022-07-06 Nora Bailey , Dan Fabrycky

In the present research, we study the effects of a single giant planet in the dynamical evolution of water-rich embryos and planetesimals, located beyond the snow line of systems around Sun-like stars, in order to determine what kind of…

Earth and Planetary Astrophysics · Physics 2018-09-19 Mariana B. Sánchez , Gonzalo C. de Elía , Luciano A. Darriba

Terrestrial planets are believed to be formed via giant impacts of Mars-sized protoplanets. Planets formed via giant impacts have highly eccentric orbits. A swarm of planetesimals around the planets may lead to eccentricity damping for the…

Earth and Planetary Astrophysics · Physics 2020-01-08 Hiroshi Kobayashi , Kazuhide Isoya , Yutaro Sato

Gas giant planets are far easier than terrestrial planets to detect around other stars, and are thought to form much more quickly than terrestrial planets. Thus, in systems with giant planets, the late stages of terrestrial planet formation…

Astrophysics · Physics 2009-11-11 Sean N. Raymond

The search for habitable planets like Earth around other stars fulfils an ancient imperative to understand our origins and place in the cosmos. The past decade has seen the discovery of hundreds of planets, but nearly all are gas giants…

Astrophysics · Physics 2009-11-13 Eric Gaidos , Nader Haghighipour , Eric Agol , David Latham , Sean Raymond , John Rayner

In this review, we summarize our present knowledge of the behaviour of the mass-radius relationship from solar-type stars down to terrestrial planets, across the regime of substellar objects, brown dwarfs and giant planets. Particular…

Astrophysics · Physics 2009-11-13 G. Chabrier , I. Baraffe , J. Leconte , J. Gallardo , T. barman

In the late stage of terrestrial planet formation, planets are predicted to undergo pairwise collisions known as giant impacts. Here we present a high-resolution database of giant impacts for differentiated colliding bodies of iron-silicate…

The existence of giant planets on wide orbits ($\stackrel{>}{_\sim}100$AU) challenge planet formation theories; the core accretion scenario has difficulty in forming them, whereas the disc instability model forms an overabundance of them…

Earth and Planetary Astrophysics · Physics 2023-08-09 Ethan Carter , Dimitris Stamatellos

Correlations between stellar properties and the occurrence rate of exoplanets can be used to inform the target selection of future planet search efforts and provide valuable clues about the planet formation process. We analyze a sample of…

Earth and Planetary Astrophysics · Physics 2015-05-19 John Asher Johnson , Kimberly M. Aller , Andrew W. Howard , Justin R. Crepp

With more than 260 extrasolar planetary systems discovered to-date, the search for habitable planets has found new grounds. Unlike our solar system, the stars of many of these planets are hosts to eccentric or close-in giant bodies. Several…

Astrophysics · Physics 2014-11-18 Nader Haghighipour

The migration of the giant planets due to the scattering of planetesimals causes powerful resonances to move through the asteroid belt and the terrestrial planet region. Exactly when and how the giant planets migrated is not well known. In…

Earth and Planetary Astrophysics · Physics 2015-05-27 Kevin J. Walsh , Alessandro Morbidelli

Young planetary systems are subjected to different dynamical effects that can influence their orbital structure over time. In systems with more than one planet, other planets can internally influence each other, e.g. via planet-planet…

Earth and Planetary Astrophysics · Physics 2025-10-07 Christina Schoettler , James E Owen

We propose a comprehensive survey of giant planets ranging from close-in highly irradiated hot Jupiters to young, wide-orbit directly imaged planets. The combination of two established techniques for probing planetary atmospheric…

Instrumentation and Methods for Astrophysics · Physics 2024-09-04 Munazza K. Alam , Emily Rickman , Kielan Hoch , Paul Mollière , Josh Lothringer , Aarynn L. Carter , Isabel Rebollido , Ben J. Sutlieff , Jens Kammerer

With N-body simulations of a planetary system with an asteroid belt we investigate how the asteroid impact rate on the Earth is affected by the architecture of the planetary system. We find that the $\nu_6$ secular resonance plays an…

Earth and Planetary Astrophysics · Physics 2017-10-25 Jeremy L. Smallwood , Rebecca G. Martin , Stephen Lepp , Mario Livio

To understand giant planet formation, we need to focus on host stars close to $1.7\ \rm M_{\odot}$, where the occurrence rate of these planets is the highest. In this initial study, we carry out pebble-driven core accretion planet formation…

Earth and Planetary Astrophysics · Physics 2023-10-30 Heather Johnston , Olja Panic , Beibei Liu

The hundreds of exoplanets that have been discovered in the past two decades offer a new perspective on planetary structure. Instead of being the archetypal examples of planets, those of our Solar System are merely possible outcomes of…

Earth and Planetary Astrophysics · Physics 2015-06-18 David S. Spiegel , Jonathan J. Fortney , Christophe Sotin

The giant impact phase of terrestrial planet formation establishes connections between super-Earths' orbital properties (semimajor axis spacings, eccentricities, mutual inclinations) and interior compositions (the presence or absence of…

Earth and Planetary Astrophysics · Physics 2016-05-09 Rebekah I. Dawson , Eve J. Lee , Eugene Chiang

We review the interior structure and evolution of Jupiter, Saturn, Uranus and Neptune, and extrasolar giant planets with particular emphasis on constraining their global composition.

Earth and Planetary Astrophysics · Physics 2009-12-11 Tristan Guillot , Daniel Gautier

The past decade has seen major progress in our understanding of terrestrial planet formation. Yet key questions remain. In this review we first address the growth of 100 km-scale planetesimals as a consequence of dust coagulation and…

Earth and Planetary Astrophysics · Physics 2018-12-05 Andre Izidoro , Sean N. Raymond

Exoplanets around different types of stars provide a window into the diverse environments in which planets form. This chapter describes the observed relations between exoplanet populations and stellar properties and how they connect to…

Earth and Planetary Astrophysics · Physics 2024-03-06 Gijs D. Mulders
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