Other
Scientific paper
Sep 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006dps....38.5402b&link_type=abstract
American Astronomical Society, DPS meeting #38, #54.02; Bulletin of the American Astronomical Society, Vol. 38, p.583
Other
Scientific paper
The discovery of large trans-Neptunian bodies such as Sedna demonstrates there are objects that had their pericentres decoupled from Neptune.
Here we report the ongoing study of the formation of the Oort cloud while the Sun was in a star cluster that include the effects on the comets of aerodynamic drag due to the primordial Solar nebula. The minimum-mass Hayashi model (Hayashi, 1981) is used as a reference density distribution. In most runs, only Jupiter and Saturn are present on their pre-LHB orbits although in some cases Uranus and Neptune are included.
If the minimum-mass distribution persists for more than 1 Myr subsequent to the formation of Jupiter and Saturn and if the gas disk extends much further than 12 AU, very few km-sized comets end up in the (Inner) Oort cloud, but end up on near-circular orbits inside of Jupiter or outside of Saturn/Neptune.
A case which might produce a substantial OC involves truncating the outer edge of the gas disk at 10 AU due to photoevaporation and having Uranus and Neptune present. The gas lifts `q’ of any comets tied to Jupiter before it can eject them and instead will find themselves under Uranus’ and Neptune's control; since their energy kicks are much more gentle, the comets stand a good chance to enter the Oort cloud. Truncating the disk at 15 AU yields similar results, though the efficiency is lower because only Neptune creates a scattered disk and send the comets to the OC.
On the other hand, the deposition of large amounts of material beyond the outermost large body could have important consequences for accretion and/or subsequent planetary migration as well as comet scattering and subsequent (Inner) Oort cloud formation. These aspects will be briefly discussed and are to be explored further in the near future.
Brasser Ramon
Duncan Martin J.
Levison Harold F.
No associations
LandOfFree
Oort Cloud Formation in the Primordial Solar Environment does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Oort Cloud Formation in the Primordial Solar Environment, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Oort Cloud Formation in the Primordial Solar Environment will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1001226