Extrasolar Visions II
Would you like to react to this message? Create an account in a few clicks or log in to continue.

Extrasolar Visions II

Extrasolar Planets.
 
HomeHome  SearchSearch  Latest imagesLatest images  RegisterRegister  Planet TablePlanet Table  Log in  

 

 Warm Saturns: warped ring systems?

Go down 
2 posters
AuthorMessage
Lazarus
dF star
dF star



Number of posts : 3337
Registration date : 2008-06-12

Warm Saturns: warped ring systems? Empty
PostSubject: Warm Saturns: warped ring systems?   Warm Saturns: warped ring systems? Empty21st April 2011, 1:59 pm

Here's a paper about whether ring systems can exist around inner-system giant planets.

Warm Saturns: On the Nature of Rings around Extrasolar Planets that Reside Inside the Ice Line

Because these planets are close to the star, the rings would be made of rocky material which would lead to more compact ring systems due to the higher density. Some of the close-in planets may have warped ring systems, with the inner part of the rings aligned with the planet's equator and the outer part aligned with the orbital motion.
Back to top Go down
Lazarus
dF star
dF star



Number of posts : 3337
Registration date : 2008-06-12

Warm Saturns: warped ring systems? Empty
PostSubject: Re: Warm Saturns: warped ring systems?   Warm Saturns: warped ring systems? Empty29th June 2011, 6:00 pm

Another neat point about this is that for habitable gas giants, the Laplace radius could be within the range of orbital distances of the satellite system. E.g. for Jupiter at 1 AU around a solar-mass star, the Laplace radius would be roughly between the orbital distances of Europa and Ganymede.

Outer moons would therefore be better aligned with the planet's orbit than the planet's equator (similar to our own moon), and therefore if the planet has significant obliquity and had a ring system you'd get a good view of the rings from the moon. On the other hand you wouldn't have seasons unless the planet's orbit is substantially eccentric.
Back to top Go down
Sirius_Alpha
Admin
Admin
Sirius_Alpha


Number of posts : 4320
Location : Earth
Registration date : 2008-04-06

Warm Saturns: warped ring systems? Empty
PostSubject: Re: Warm Saturns: warped ring systems?   Warm Saturns: warped ring systems? Empty29th June 2011, 11:10 pm

I haven't heard of the Laplace radius. Could you shed some light on the dynamics behind it?

(minor side note, I've been in the process of moving so I will not be able to give this forum as much attention as I would like for perhaps a couple days)

_________________
Caps Lock: Cruise control for 'Cool'!
Back to top Go down
https://solar-flux.forumotion.com/
Lazarus
dF star
dF star



Number of posts : 3337
Registration date : 2008-06-12

Warm Saturns: warped ring systems? Empty
PostSubject: Re: Warm Saturns: warped ring systems?   Warm Saturns: warped ring systems? Empty30th June 2011, 3:01 pm

Laplace radius is where the quadrupole potential from the planet's equatorial bulge equals the quadrupole potential from the star.

So objects closer to the planet than the Laplace radius tend to be aligned to the planetary equator, objects further away tend to be aligned to the stellar orbit.
Back to top Go down
Sponsored content





Warm Saturns: warped ring systems? Empty
PostSubject: Re: Warm Saturns: warped ring systems?   Warm Saturns: warped ring systems? Empty

Back to top Go down
 
Warm Saturns: warped ring systems?
Back to top 
Page 1 of 1
 Similar topics
-
» Forming ring systems
» Warm Jupiters in misaligned systems
» Hot/Warm Jupiter formation, effects on planetary systems
» Ten New and Updated Multi-planet Systems, and a Survey of Exoplanetary Systems
» HATnet Results

Permissions in this forum:You cannot reply to topics in this forum
Extrasolar Visions II :: Extrasolar Visions :: Extrasolar Planetology-
Jump to: