The nature of the Neptune-like planets orbiting close solar type stars
The sample of known exoplanets is strongly biased to masses larger than the ones of the giant gaseous planets of the Solar System. Recently, the discovery of two extrasolar planets of considerably lower masses around the nearby Stars GJ 436 and ρ Cancri was reported. They are like our outermost icy...
Guardado en:
| Autores principales: | , |
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| Formato: | Articulo Preprint |
| Lenguaje: | Inglés |
| Publicado: |
2005
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/93606 https://www.sciencedirect.com/science/article/pii/S0019103505000850?via%3Dihub http://arxiv.org/abs/astro-ph/0511051v1 |
| Aporte de: |
| id |
I19-R120-10915-93606 |
|---|---|
| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Astronomía Física Ciencias Naturales Ciencias Exactas Giant planets Origins Extrasolar planets |
| spellingShingle |
Astronomía Física Ciencias Naturales Ciencias Exactas Giant planets Origins Extrasolar planets Brunini, Adrián Cionco, Rodolfo Gustavo The nature of the Neptune-like planets orbiting close solar type stars |
| topic_facet |
Astronomía Física Ciencias Naturales Ciencias Exactas Giant planets Origins Extrasolar planets |
| description |
The sample of known exoplanets is strongly biased to masses larger than the ones of the giant gaseous planets of the Solar System. Recently, the discovery of two extrasolar planets of considerably lower masses around the nearby Stars GJ 436 and ρ Cancri was reported. They are like our outermost icy giants, Uranus and Neptune, but in contrast, these new planets are orbiting at only some hundredth of the Earth– Sun distance from their host stars, raising several new questions about their origin and constitution. Here we report numerical simulations of planetary accretion that show, for the first time through N-body integrations that the formation of compact systems of Neptune-like planets close to the hosts stars could be a common by-product of planetary formation. We found a regime of planetary accretion, in which orbital migration accumulates protoplanets in a narrow region around the inner edge of the nebula, where they collide each other giving rise to Neptune-like planets. Our results suggest that, if a protoplanetary solar environment is common in the Galaxy, the discovery of a vast population of this sort of ‘hot cores’ should be expected in the near future. |
| format |
Articulo Preprint |
| author |
Brunini, Adrián Cionco, Rodolfo Gustavo |
| author_facet |
Brunini, Adrián Cionco, Rodolfo Gustavo |
| author_sort |
Brunini, Adrián |
| title |
The nature of the Neptune-like planets orbiting close solar type stars |
| title_short |
The nature of the Neptune-like planets orbiting close solar type stars |
| title_full |
The nature of the Neptune-like planets orbiting close solar type stars |
| title_fullStr |
The nature of the Neptune-like planets orbiting close solar type stars |
| title_full_unstemmed |
The nature of the Neptune-like planets orbiting close solar type stars |
| title_sort |
nature of the neptune-like planets orbiting close solar type stars |
| publishDate |
2005 |
| url |
http://sedici.unlp.edu.ar/handle/10915/93606 https://www.sciencedirect.com/science/article/pii/S0019103505000850?via%3Dihub http://arxiv.org/abs/astro-ph/0511051v1 |
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Repositorios |
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