气候变化领域集成服务门户(CCPortal): Samples of stars beyond the solar system: Silicate grains in interplanetary dust

CCPortal

DOI	10.1126/science.1080576
	Samples of stars beyond the solar system: Silicate grains in interplanetary dust
	Messenger S.; Keller L.P.; Stadermann F.J.; Walker R.M.; Zinner E.
发表日期	2003
ISSN	0036-8075
起始页码	105
结束页码	108
卷号	300 期号:5616
英文摘要	We have identified six circumstellar silicate grains within interplanetary dust particles (IDPs), Their extrasolar origins are demonstrated by their extremely anomalous oxygen isotopic compositions, Three 17O-rich grains appear to originate from red giant or asymptotic giant branch stars. One 16O-rich grain may be from a metal-poor star. Two 16O-poor grains have unknown stellar sources. One of the grains is forsterite, and two are amorphous silicate "GEMS" (glass with embedded metal and sulfides), which is consistent with astronomical identifications of crystalline and amorphous silicates in the outflows of evolved stars, These observations suggest cometary origins of these IDPs and underscore the perplexing absence of silicates among circumstellar dust grains from meteorites.
英文关键词	Amorphous materials; Isotopes; Oxygen; Silicates; Space research; Stars; Solar system; metal derivative; oxygen; silicate; sulfide; interplanetary dust; silicate; article; astronomy; cosmos; crystal; dust; mathematical analysis; molecular evolution; priority journal; Astronomy; Carbon; Cosmic Dust; Meteoroids; Oxygen Isotopes; Silicates; Solar System; Temperature
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/244767
作者单位	Laboratory for Space Sciences, Physics Department, Washington University, St. Louis, MO 63130, United States; Mail Code SR, NASA Johnson Space Center, Houston, TX 77058, United States
推荐引用方式 GB/T 7714	Messenger S.,Keller L.P.,Stadermann F.J.,et al. Samples of stars beyond the solar system: Silicate grains in interplanetary dust[J],2003,300(5616).
APA	Messenger S.,Keller L.P.,Stadermann F.J.,Walker R.M.,&Zinner E..(2003).Samples of stars beyond the solar system: Silicate grains in interplanetary dust.Science,300(5616).
MLA	Messenger S.,et al."Samples of stars beyond the solar system: Silicate grains in interplanetary dust".Science 300.5616(2003).