Stardust Isotopic Compositions of Cometary Matter Returned
نویسنده
چکیده
http://www.sciencemag.org/cgi/content/full/314/5806/1724 version of this article at: including high-resolution figures, can be found in the online Updated information and services, http://www.sciencemag.org/cgi/content/full/314/5806/1724/DC1 can be found at: Supporting Online Material found at: can be related to this article A list of selected additional articles on the Science Web sites http://www.sciencemag.org/cgi/content/full/314/5806/1724#related-content http://www.sciencemag.org/cgi/content/full/314/5806/1724#otherarticles , 5 of which can be accessed for free: cites 30 articles This article 4 article(s) on the ISI Web of Science. cited by This article has been http://www.sciencemag.org/cgi/content/full/314/5806/1724#otherarticles 4 articles hosted by HighWire Press; see: cited by This article has been http://www.sciencemag.org/about/permissions.dtl in whole or in part can be found at: this article permission to reproduce of this article or about obtaining reprints Information about obtaining
منابع مشابه
Isotopic compositions of cometary matter returned by Stardust.
Hydrogen, carbon, nitrogen, and oxygen isotopic compositions are heterogeneous among comet 81P/Wild 2 particle fragments; however, extreme isotopic anomalies are rare, indicating that the comet is not a pristine aggregate of presolar materials. Nonterrestrial nitrogen and neon isotope ratios suggest that indigenous organic matter and highly volatile materials were successfully collected. Except...
متن کاملCometary glycine detected in samples returned by Stardust
available online at http://meteoritics.org Cometary glycine detected in samples returned by Stardust Jamie E. ELSILA*, Daniel P. GLAVIN, and Jason P. DWORKIN NASA Goddard Space Flight Center, Greenbelt, Maryland 20771, USA *Corresponding author: [email protected] (Received 05 June 2009; revision accepted 24 July 2009) Abstract–Our previous analysis of cometary samples returned to Earth by N...
متن کاملVariety of Organic Matter in Stardust Return Samples from Comet 81p/wild 2
Introduction: The Stardust mission captured dust particles from comet 81P/Wild 2 and returned them to Earth. Since this material has been cryogenically stored within the comet for billions of years, the Star-dust samples represent early nebular condensates and some presolar material, identified by anomalous isotopic fractionation outside the range of solar values. Carbonaceous matter has been i...
متن کاملFe-bearing Mineral Groupings in Stardust Fragments
NASA’s Stardust mission returned genuine samples from the coma of the Jupiter-family comet Wild2 to Earth in January 2006. Particles were captured in aerogel and foil at 6 km/s. The impacting cometary particles fragmented during capture in aerogel, dispersing material along carrotor turnipshaped tracks. If the impacting cometary particles were completely homogenous, one would expect the mineral...
متن کاملPAHs in Comets: An Overview
Polycyclic aromatic hydrocarbon (PAH) molecules, ubiquitously seen in the interstellar medium (ISM) of our own and external galaxies, might have been incorporated into comets if they are formed from relatively unprocessed interstellar matter. The detection of PAHs in comets would be an important link between the ISM and comets. This review compiles our current knowledge on cometary PAHs, based ...
متن کامل