A late episode of irradiation in the early solar system: Evidence from extinct Cl-36 and Al-26 in meteorites

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	A late episode of irradiation in the early solar system: Evidence from extinct Cl-36 and Al-26 in meteorites
	Hsu, WB ; Guan, YB ; Leshin, LA ; Ushikubo, T ; Wasserburg, GJ
刊名	ASTROPHYSICAL JOURNAL
	2006-03-20
卷号	640 期号:1 页码:525-529
关键词	solar system : formation
ISSN号	0004-637X
英文摘要	Late-formed halogen-rich phases in a refractory inclusion and a chondrule from the Allende meteorite exhibit large S-36 excesses that linearly correlate with the chlorine concentration, providing strong evidence in support of the existence of the short-lived nuclide Cl-36 (mean life of 0.43 Myr) in the early solar system. The inferred Cl-36/Cl-35 ratios at the time when these phases formed are very high (similar to 4 x 10(-6)) and essentially the same for the inclusion and the chondrule and confirm the earlier report of S-36 excess in another meteorite. In addition, the Cl-36 is decoupled from Al-26. The observed and any possible higher levels of Cl-36 cannot be the result of a supernova or AGB stellar source but require a late episode of energetic particle bombardment by the early Sun, in support of the arguments based on the previous discovery of Be-10. It is now clear that a blend of several sources is required to explain the short-lived nuclei when the solar system formed.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	ALUMINUM-RICH INCLUSIONS ; SHORT-LIVED NUCLIDES ; GIANT BRANCH STARS ; CHONDRITES ; ALLENDE ; NUCLEI ; ORIGIN ; NUCLEOSYNTHESIS ; COMPONENTS ; CHONDRULES
收录类别	SCI
语种	英语
WOS记录号	WOS:000236143100052
公开日期	2012-02-07
内容类型	期刊论文
源URL	[http://159.226.72.40/handle/332002/3604]
专题	紫金山天文台_天体化学和行星科学实验室
作者单位	1.Purple Mt Observ, Lab Astrochem & Planetary Sci, Nanjing 210008, Peoples R China 2.Arizona State Univ, Dept Geol Sci, Tempe, AZ 85287 USA 3.CALTECH, Lunat Asylum, Div Geol & Planetary Sci, Pasadena, CA 91125 USA
推荐引用方式 GB/T 7714	Hsu, WB,Guan, YB,Leshin, LA,et al. A late episode of irradiation in the early solar system: Evidence from extinct Cl-36 and Al-26 in meteorites[J]. ASTROPHYSICAL JOURNAL,2006,640(1):525-529.
APA	Hsu, WB,Guan, YB,Leshin, LA,Ushikubo, T,&Wasserburg, GJ.(2006).A late episode of irradiation in the early solar system: Evidence from extinct Cl-36 and Al-26 in meteorites.ASTROPHYSICAL JOURNAL,640(1),525-529.
MLA	Hsu, WB,et al."A late episode of irradiation in the early solar system: Evidence from extinct Cl-36 and Al-26 in meteorites".ASTROPHYSICAL JOURNAL 640.1(2006):525-529.