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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Detalles Bibliográficos
Autores principales: Benvenuto, Omar Gustavo, Brunini, Adrián, Fortier, Andrea
Formato: Articulo
Lenguaje:Inglés
Publicado: 2007
Materias:
Ciencias Astronómicas
planetología
planetas
astrofísica
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/2096
http://www.sciencedirect.com/science/article/pii/S0019103507002850
Aporte de:
Aportado por : SEDICI (UNLP) de Universidad Nacional de La Plata .
id I19-R120-10915-2096
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
planetología
planetas
astrofísica
spellingShingle Ciencias Astronómicas
planetología
planetas
astrofísica
Benvenuto, Omar Gustavo
Brunini, Adrián
Fortier, Andrea
Envelope instability in giant planet formation
topic_facet Ciencias Astronómicas
planetología
planetas
astrofísica
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
http://www.sciencedirect.com/science/article/pii/S0019103507002850
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AT bruniniadrian envelopeinstabilityingiantplanetformation
AT fortierandrea envelopeinstabilityingiantplanetformation
bdutipo_str Repositorios
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