Migrating Jupiter up to the habitable zone: Earth-like planet formation and water delivery

Context. Several observational works have shown the existence of Jupiter-mass planets covering a wide range of semi-major axes around Sun-like stars. Aims. We aim to analyse the planetary formation processes around Sun-like stars that host a Jupiter-mass planet at intermediate distances ranging fr...

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Autores principales: Darriba, Luciano Ariel, Elía, Gonzalo Carlos de, Guilera, Octavio Miguel, Brunini, Adrián
Formato: Articulo
Lenguaje:Inglés
Publicado: 2017
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Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/87203
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id I19-R120-10915-87203
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
Astrobiology
Methods: numerical
Planets and satellites: Dynamical evolution and stability
Planets and satellites: Formation
Planets and satellites: Terrestrial planets
spellingShingle Ciencias Astronómicas
Astrobiology
Methods: numerical
Planets and satellites: Dynamical evolution and stability
Planets and satellites: Formation
Planets and satellites: Terrestrial planets
Darriba, Luciano Ariel
Elía, Gonzalo Carlos de
Guilera, Octavio Miguel
Brunini, Adrián
Migrating Jupiter up to the habitable zone: Earth-like planet formation and water delivery
topic_facet Ciencias Astronómicas
Astrobiology
Methods: numerical
Planets and satellites: Dynamical evolution and stability
Planets and satellites: Formation
Planets and satellites: Terrestrial planets
description Context. Several observational works have shown the existence of Jupiter-mass planets covering a wide range of semi-major axes around Sun-like stars. Aims. We aim to analyse the planetary formation processes around Sun-like stars that host a Jupiter-mass planet at intermediate distances ranging from ~1 au to 2 au. Our study focusses on the formation and evolution of terrestrial-like planets and water delivery in the habitable zone (HZ) of the system. Our goal is also to analyse the long-term dynamical stability of the resulting systems. Methods. A semi-analytic model was used to define the properties of a protoplanetary disk that produces a Jupiter-mass planet around the snow line, which is located at ~2.7 au for a solar-mass star. Then, it was used to describe the evolution of embryos and planetesimals during the gaseous phase up to the formation of the Jupiter-mass planet, and we used the results as the initial conditions to carry out N-body simulations of planetary accretion. We developed sixty N-body simulations to describe the dynamical processes involved during and after the migration of the gas giant. Results. Our simulations produce three different classes of planets in the HZ: "water worlds", with masses between 2.75 M⊕ and 3.57 M⊕ and water contents of 58% and 75% by mass, terrestrial-like planets, with masses ranging from 0.58 M⊕ to 3.8 M⊕ and water contents less than 1.2% by mass, and "dry worlds", simulations of which show no water. A relevant result suggests the efficient coexistence in the HZ of a Jupiter-mass planet and a terrestrial-like planet with a percentage of water by mass comparable to the Earth. Moreover, our study indicates that these planetary systems are dynamically stable for at least 1 Gyr. Conclusions. Systems with a Jupiter-mass planet located at 1.5-2 au around solar-type stars are of astrobiological interest. These systems are likely to harbour terrestrial-like planets in the HZ with a wide diversity of water contents.
format Articulo
Articulo
author Darriba, Luciano Ariel
Elía, Gonzalo Carlos de
Guilera, Octavio Miguel
Brunini, Adrián
author_facet Darriba, Luciano Ariel
Elía, Gonzalo Carlos de
Guilera, Octavio Miguel
Brunini, Adrián
author_sort Darriba, Luciano Ariel
title Migrating Jupiter up to the habitable zone: Earth-like planet formation and water delivery
title_short Migrating Jupiter up to the habitable zone: Earth-like planet formation and water delivery
title_full Migrating Jupiter up to the habitable zone: Earth-like planet formation and water delivery
title_fullStr Migrating Jupiter up to the habitable zone: Earth-like planet formation and water delivery
title_full_unstemmed Migrating Jupiter up to the habitable zone: Earth-like planet formation and water delivery
title_sort migrating jupiter up to the habitable zone: earth-like planet formation and water delivery
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/87203
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