Diferencia entre revisiones de «Adrastea (satélite)»
Contenido eliminado Contenido añadido
Deshecha la edición 30058442 de 190.179.29.233 (disc.) aun falta |
|||
Línea 85:
Dado el [[Acoplamiento de marea]], Adrastea rota sincrónicamente con su periodo orbital, manteniendo una cara siempre mirando hacia el planeta. Su eje más largo está alineado hacia [[Júpiter (planeta)]], siendo esta la configuración de menor energía.<ref name=Thomas1998/>
==Relationship with Jupiter's rings==
Adrastea is the largest contributor to material in [[rings of Jupiter|Jupiter's rings]]. This material appears to consist primarily of material that is ejected from the surfaces of [[Inner satellites of Jupiter|Jupiter's four small inner satellites]] by meteorite impacts. It is easy for the impact ejecta to be lost from these satellites into space. This is because, due to the satellites' low density, their surfaces lie rather close to the edge of their [[Roche sphere]]s.<ref name=Burns2004/>
It seems that Adrastea is the most copious source of this ring material, as evidenced by the densest ring (the [[Rings of Jupiter#Main Ring|Main Ring]]) being located at and within Adrastea's orbit.<ref name=Burns1999>{{cite journal|last=Burns|first=J.A.|coauthors=Showalter, M.R.; Hamilton, D.P.; et al.|title=The Formation of Jupiter's Faint Rings|journal=Science|year=1999|volume=284|pages=1146–1150|doi=10.1126/science.284.5417.1146| url=http://adsabs.harvard.edu/abs/1999Sci...284.1146B|pmid=10325220}}</ref> More precisely, the orbit of Adrastea lies near the outer edge of Jupiter's Main Ring.<ref name=Ockert-Bell1999>{{cite journal |last=Ockert-Bell |first=M. E. |coauthors=Burns, J. A.; Daubar, I. J.; ''et al.'' |title=The Structure of Jupiter’s Ring System as Revealed by the Galileo Imaging Experiment |journal=Icarus |year=1999 |volume=138 |pages=188–213 |doi=10.1006/icar.1998.6072 |url= http://adsabs.harvard.edu/abs/1999Icar..138..188O}}</ref> The exact extent of visible ring material depends on the phase angle of the images: in [[light scattering|forward-scattered light]] Adrastea is firmly outside the Main Ring,<ref name=Ockert-Bell1999/> but in back-scattered light (which reveals much bigger particles) there appears to also be a narrow ringlet outside Adrastea's orbit.<ref name=Burns2004/>
== Véase también ==
| |||