Envelope instability in giant planet formation

We compute the growth of isolated gaseous giant planets for several values of the density of the protoplanetary disk, several distances from the central star and two values for the (fixed) radii of accreted planetesimals. Calculations were performed in the frame of the core instability mechanism and...

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Autores principales: Benvenuto, Omar Gustavo, Brunini, Adrián, Fortier, Andrea
Formato: Articulo
Lenguaje:Inglés
Publicado: 2007
Materias:
Ciencias Astronómicas
Accretion
Planetary formation
Planetesimals
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/2096
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-2096
record_format dspace
spelling I19-R120-10915-20962023-09-21T20:06:30Z http://sedici.unlp.edu.ar/handle/10915/2096 Envelope instability in giant planet formation Benvenuto, Omar Gustavo Brunini, Adrián Fortier, Andrea 2007 2010-10-05T03:00:00Z en Ciencias Astronómicas Accretion Planetary formation Planetesimals We compute the growth of isolated gaseous giant planets for several values of the density of the protoplanetary disk, several distances from the central star and two values for the (fixed) radii of accreted planetesimals. Calculations were performed in the frame of the core instability mechanism and the solids accretion rate adopted is that corresponding to the oligarchic growth regime. We find that for massive disks and/or for protoplanets far from the star and/or for large planetesimals, the planetary growth occurs smoothly. However, notably, there are some cases for which we find an envelope instability in which the planet exchanges gas with the surrounding protoplanetary nebula. The timescale of this instability shows that it is associated with the process of planetesimals accretion. The presence of this instability makes it more difficult the formation of gaseous giant planets. Facultad de Ciencias Astronómicas y Geofísicas Articulo Articulo http://creativecommons.org/licenses/by-nc-nd/4.0/ Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) application/pdf 394-396
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
Accretion
Planetary formation
Planetesimals
spellingShingle Ciencias Astronómicas
Accretion
Planetary formation
Planetesimals
Benvenuto, Omar Gustavo
Brunini, Adrián
Fortier, Andrea
Envelope instability in giant planet formation
topic_facet Ciencias Astronómicas
Accretion
Planetary formation
Planetesimals
description We compute the growth of isolated gaseous giant planets for several values of the density of the protoplanetary disk, several distances from the central star and two values for the (fixed) radii of accreted planetesimals. Calculations were performed in the frame of the core instability mechanism and the solids accretion rate adopted is that corresponding to the oligarchic growth regime. We find that for massive disks and/or for protoplanets far from the star and/or for large planetesimals, the planetary growth occurs smoothly. However, notably, there are some cases for which we find an envelope instability in which the planet exchanges gas with the surrounding protoplanetary nebula. The timescale of this instability shows that it is associated with the process of planetesimals accretion. The presence of this instability makes it more difficult the formation of gaseous giant planets.
format Articulo
Articulo
author Benvenuto, Omar Gustavo
Brunini, Adrián
Fortier, Andrea
author_facet Benvenuto, Omar Gustavo
Brunini, Adrián
Fortier, Andrea
author_sort Benvenuto, Omar Gustavo
title Envelope instability in giant planet formation
title_short Envelope instability in giant planet formation
title_full Envelope instability in giant planet formation
title_fullStr Envelope instability in giant planet formation
title_full_unstemmed Envelope instability in giant planet formation
title_sort envelope instability in giant planet formation
publishDate 2007
url http://sedici.unlp.edu.ar/handle/10915/2096
work_keys_str_mv AT benvenutoomargustavo envelopeinstabilityingiantplanetformation
AT bruniniadrian envelopeinstabilityingiantplanetformation
AT fortierandrea envelopeinstabilityingiantplanetformation
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