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:	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
work_keys_str_mv	AT benvenutoomargustavo envelopeinstabilityingiantplanetformation AT bruniniadrian envelopeinstabilityingiantplanetformation AT fortierandrea envelopeinstabilityingiantplanetformation
bdutipo_str	Repositorios
_version_	1764820465203806208

Envelope instability in giant planet formation

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