|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'500'096
Articles rated: 2609
19 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Incorporation of a Late-forming Chondrule into Comet Wild 2 | | R. C. Ogliore
; G. R. Huss
; K. Nagashima
; A. L. Butterworth
; Z. Gainsforth
; J. Stodolna
; A. J. Westphal
; D. Joswiak
; T. Tyliszczak
; | | Date: |
16 Dec 2011 | | Abstract: | We report the petrology, O isotopic composition, and Al-Mg isotope system-
atics of a chondrule fragment from the Jupiter-family comet Wild 2, returned to
Earth by NASA’s Stardust mission. This object shows characteristics of a type
II chondrule that formed from an evolved oxygen isotopic reservoir. No evidence
for extinct 26Al was found, with (26Al/ 27Al)0 < 3.0 imes10^-6. Assuming
homogenous distribution of 26Al in the solar nebula, this particle crystallized
at least 3 Myr after the earliest solar system objects-relatively late compared
to most chondrules in meteorites. We interpret the presence of this object in a
Kuiper Belt body as evidence of late, large-scale transport of small objects
between the inner and outer solar nebula. Our observations constrain the
formation of Jupiter (a barrier to outward transport if it formed further from
the Sun than this cometary chondrule) to be more than 3 Myr after CAIs. | | Source: | arXiv, 1112.3943 | | 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