|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'504'928
Articles rated: 2609
25 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
The Resonant Transneptunian Populations | | B. Gladman
; S. M. Lawler
; J-M. Petit
; J. Kavelaars
; R. L. Jones
; J. Wm. Parker
; C. Van Laerhoven
; P. Nicholson
; P. Rousselot
; A. Bieryla
; M. L. N. Ashby
; | | Date: |
Thu, 31 May 2012 18:39:18 GMT (1843kb) | | Abstract: | The transneptunian objects (TNOs) trapped in mean-motion resonances with
Neptune were likely emplaced there during planet migration late in the
giant-planet formation process. We perform detailed modelling of the resonant
objects detected in the Canada-France Ecliptic Plane Survey (CFEPS) in order to
provide population estimates and, for some resonances, constrain the complex
internal orbital element distribution. Detection biases play a critical role
because phase relationships with Neptune make object discovery more likely at
certain longitudes. This paper discusses the 3:2, 5:2, 2:1, 3:1, 5:1, 4:3, 5:3,
7:3, 5:4, and 7:4 mean-motion resonances, all of which had CFEPS detections,
along with our upper limit on 1:1 Neptune Trojans (which is consistent with
their small population estimated elsewhere). For the plutinos (TNOs in the 3:2
resonance) we refine the orbital element distribution given in Kavelaars et al.
(2009) and show that steep H-magnitude distributions (N(H) proportional to
10aH, with a=0.8-0.9) are favoured in the range Hg=8-9, and confirm that this
resonance does not share the inclination distribution of the classical Kuiper
Belt. We give the first population estimate for the 5:2 resonance and find
that, to within the uncertainties, the population is equal to that of the 3:2
(13,000 TNOs with Hg < 9.16), whereas the 2:1 population is smaller by a factor
of 3-4 compared to the other two resonances. We also measure significant
populations inhabiting the 4:3, 5:3, 7:3, 5:4, 7:4, 3:1, and 5:1 resonances,
with Hg < 9.16 (D >100 km) populations in the thousands. We compare our
intrinsic population and orbital-element distributions with several published
models of resonant-TNO production; the most striking discrepancy is that
resonances beyond the 2:1 are in reality more heavily populated than in
published models. | | Source: | arXiv, 1205.7065 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER